Question 1: Palette 1/212

Allen MCQ

A meristem may be defined as the group of cells which -

A

Does not divide

B

Conserve food

C

Divide continuously to give rise to new cells.

D

Elongate, mature and add to the group of cells.

Question 2: Palette 2/212

Allen MCQ

The length of different internodes in a culm of sugarcane is variable because of :-

A

Position of axillary buds.

B

Size of leaf lamina at the node below each internode.

C

Intercalary meristem.

D

Shoot apical meristem.

Question 3: Palette 3/212

Allen MCQ

The secondary meristem originates from-

A

Promeristem

B

Primary meristem

C

Primary permanent tissue

D

Secretory tissue

Question 4: Palette 4/212

Allen MCQ

The function of root cap is-

A

Provide protection to root apex

B

Storage of food products

C

Absorption of nutrients

D

None of the above

Question 5: Palette 5/212

Allen MCQ

Aerenchyma is helpful to plants by :-

A

Providing buoyancy to hydrophytes

B

Promoting photosynthesis

C

Give mechanical strength to plants

D

Giving flexibility to plants

Question 6: Palette 6/212

Allen MCQ

Label the figure correctly.

A

A= Shoot apical meristematic zone,
B= Leaf primordium,
C= Axillary bud,
D= Differentiating vascular tissue

B

A= Leaf primordium,
B= Shoot apical meristematic zone,
C= Axillary bud,
D= Differentiating vascular tissue

C

A= Axillary bud,
B= Leaf primordium,
C= Shoot apical meristematic zone,
D= Differentiating vascular tissue

D

A= Axillary bud,
B= Shoot apical meristematic zone,
C= Leaf primordium,
D= Differentiating vascular tissue

Question 7: Palette 7/212

Allen MCQ

In plants, which of the following cells are living :-

A

Xylem vessels

B

Meristem

C

Cork

D

Fibres

Question 8: Palette 8/212

Allen MCQ

Which of the following tissues form the main bulk of storage organ-

A

Parenchyma

B

Collenchyma

C

Sclerenchyma

D

Aerenchyma

Question 9: Palette 9/212

Allen MCQ

Mechanical tissue consisting of living cells is

A

Sclerenchyma

B

Collenchyma

C

Chlorenchyma

D

Parenchyma

Question 10: Palette 10/212

Allen MCQ

Statement-1 : Often collenchyma contain chloroplast. Statement-2: Collenchyma with chloroplast assimilate food.

A

Only statement 1 is correct.

B

Only statement 2 is correct.

C

Both 1 and 2 statements are incorrect.

D

Both 1 and 2 statements are correct.

Question 11: Palette 11/212

Allen MCQ

Identify the following figure and label A, B, C and D.

A

Collenchyma. A= Thickened corner B= Protoplasm, C= Vacuole, D= Cell wall

B

Parenchyma. A= Thickened corners, B= Protoplasm, C= Vacuole, D= Cell wall

C

Collenchyma. A= Thickened corner
B= Vacuole, C= Protoplasm, D= Cell wall

D

Sclerenchyma. A= Thickened corners, B= Protoplasm, C= Vacuole, D= Cell wall

Question 12: Palette 12/212

Allen MCQ

Read the following statements carefully and choose the correct option accordingly :-
(a) During the formation of leaves and elongation of stem, some cells "left behind" from shoot apical meristem.
(b) Meristem which occurs between mature tissue is known as intercalary meristem.
(c) Cylindrical meristems such as fascicular vascular cambium, interfascicular cambium and cork cambium are examples of apical meristem.
(d) During the formation of the primary plant body, specific regions of the lateral meristem produce dermal tissues, ground tissues and vascular tissues.

A

Only a and c are correct

B

Only a and d are correct

C

Only a and b are correct

D

Only a, b and c are correct

Question 13: Palette 13/212

Allen MCQ

Which one of the following is not a lateral meristem?

A

Intercalary meristem

B

Intrafascicular cambium

C

Interfascicular cambium

D

Phellogen

Question 14: Palette 14/212

Allen MCQ

Transport of food material in higher plants takes place through :

A

Transfusion tissue

B

Tracheids

C

Sieve elements

D

Companion cells

Question 15: Palette 15/212

Allen MCQ

Which of following plant cells are without vacuoles without nuclei and are dead -

A

Cambium cells

B

Xylem vessels

C

Root hairs

D

Companion cells

Question 16: Palette 16/212

Allen MCQ

The cell functionally associated with sieve tube element is -

A

Phloem fibres

B

Phloem Parenchyma

C

Companion cell

D

Collenchyma

Question 17: Palette 17/212

Allen MCQ

Vessels and companion cells are respectively present in the xylem and phloem of :-

A

Gymnosperm

B

Pteridophyte

C

Angiosperm

D

Bryophyta

Question 18: Palette 18/212

Allen MCQ

Phloem parenchyma is absent in :-

A

Dicot stem

B

Dicot leaf

C

Monocot stem

D

Dicot root

Question 19: Palette 19/212

Allen MCQ

Palisade parenchyma is absent in leaves of:-

A

Gram

B

Sorghum

C

Mustard

D

Soybean

Question 20: Palette 20/212

Allen MCQ

The chief function of a xylem vessel in a plant body is to -

A

Conduct sap

B

Conduct mineral salts only

C

Eliminate excess of water at night

D

Translocate organic nutrients

Question 21: Palette 21/212

Allen MCQ

Long and pointed sclerenchyma cells are

A

Fibres

B

Tracheae

C

Wood parenchyma

D

Sclereids

Question 22: Palette 22/212

Allen MCQ

The chief water conducting elements of xylem in gymnosperms are :

A

Tracheids

B

Vessels

C

Fibres

D

Transfusion tissue

Question 23: Palette 23/212

Allen MCQ

Which xylem element is living :-

A

Vessels

B

Tracheids

C

Fibre

D

Parenchyma

Question 24: Palette 24/212

Allen MCQ

Sugar transport elements of gymnosperms & pteridophytes are :-

A

Sieve cells

B

Sieve elements

C

Sieve tubes

D

Sieve tube elements

Question 25: Palette 25/212

Allen MCQ

Gymnosperms are also called soft wood spermatophytes because they lack :-

A

Thick-walled tracheids

B

Xylem fibres

C

Cambium

D

Phloem fibres

Question 26: Palette 26/212

Allen MCQ

Ground tissue includes :-

A

All tissues external to endodermis

B

All tissues except epidermis and vascular bundles

C

Epidermis and cortex

D

All tissues internal to endodermis

Question 27: Palette 27/212

Allen MCQ

Bast fibres are mostly found in :-

A

Secondary xylem

B

Secondary phloem

C

Primary phloem

D

Primary xylem

Question 28: Palette 28/212

Allen MCQ

When xylem and phloem are on same radius, the vascular bundles are said to be -

A

Radial

B

Conjoint

C

Concentric

D

Exarch

Question 29: Palette 29/212

Allen MCQ

Conjoint collateral vascular bundles are found in :-

A

Stem

B

Leaf

C

Root

D

Both 1 and 2

Question 30: Palette 30/212

Allen MCQ

The basic difference between stem and root is that xylem in stem is :-

A

Endarch

B

Exarch

C

Mesarch

D

Polyarch

Question 31: Palette 31/212

Allen MCQ

In which of the following order, an exarch xylem develops :-

A

Centripetal

B

Centrifugal

C

Both centripetal & centrifugal

D

Irregular

Question 32: Palette 32/212

Allen MCQ

Statement-I: The epidermal tissue systems are made of epidermal cells, stomata and the epidermal appendages. Statement-II: The ground tissue system form the main bulk of the plant. It is divided into three zones-cortex pericycle and pith.

A

Statement I and II both are correct.

B

Statement I and II both are incorrect.

C

Only statement I is correct

D

Only statement II is correct.

Question 33: Palette 33/212

Allen MCQ

Pith is produced by :-

A

Ground meristem

B

Procambium

C

Periblem

D

Dermatogen

Question 34: Palette 34/212

Allen MCQ

When protoxylem faces pericycle, it is called :-

A

Endarch

B

Mesarch

C

Exarch

D

Polyarch

Question 35: Palette 35/212

Allen MCQ

External protective tissues are :-

A

Cortex and epidermis

B

Cork and pericycle

C

Cortex and pericycle

D

Cork and epidermis

Question 36: Palette 36/212

Allen MCQ

Gymnosperm wood is non-porous because it

A

Lacks vessels

B

Contains tracheae

C

Has abundant fibres

D

Contains no fibres

Question 37: Palette 37/212

Allen MCQ

Porous wood is characterised by :-

A

Absence of tracheids

B

Presence of vessels

C

Absence of vessels

D

Presence of sieve-tubes

Question 38: Palette 38/212

Allen MCQ

Intrafascicular cambium is situated :-

A

In between the vascular bundles

B

Inside the vascular bundles

C

Outside the vascular bundles

D

In pith

Question 39: Palette 39/212

Allen MCQ

Radial vascular bundles are found in :-

A

Only dicot root

B

Only monocot root

C

Only Pteridophyta

D

Roots of vascular plants

Question 40: Palette 40/212

Allen MCQ

In dicot root :-

A

Vascular bundles are scattered with cambium.

B

Vascular bundles are open and arranged in a ring.

C

Xylem and pholem are radial.

D

Xylem is always endarch.

Question 41: Palette 41/212

Allen MCQ

A dicot root differs from a monocot root in which of the following-

A

Presence of piliferous layer.

B

Presence of exodermis.

C

Presence of ill-developed (Poorly developed) pith.

D

Separate radial vascular bundle.

Question 42: Palette 42/212

Allen MCQ

Polyarch and exarch xylem is the characteristic of :-

A

Dicot stem

B

Dicot root

C

Monocot stem

D

Monocot root

Question 43: Palette 43/212

Allen MCQ

Passage cells are found in endodermis of-

A

Dicot stem

B

Monocot stem

C

Orchid stem

D

Monocot root

Question 44: Palette 44/212

Allen MCQ

Passege cell are thin-walled cells found in

A

Central region of style through which the pollen tube grows towards the ovary.

B

Endodermis of roots facilitating rapid transport of water from cortex to pericycle

C

Phloem elements that serve as entry points for substances for transport to other plant parts

D

Testa of seeds to enable emergence of growing embryonic axis during seed germination.

Question 45: Palette 45/212

Allen MCQ

Monocot root is differ from dicot root in having :

A

Open vascular bundle

B

Scattered vascular bundle

C

Large pith

D

Radial vascular bundle

Question 46: Palette 46/212

Allen MCQ

Casparian strip is found in :-

A

Epidermis

B

Endodermis

C

Endothecium

D

Endothelium

Question 47: Palette 47/212

Allen MCQ

In barley stem vascular bundles are :-

A

Closed and radial

B

Open and scattered

C

Closed and scattered

D

Open and in a ring

Question 48: Palette 48/212

Allen MCQ

Collenchymatous hypodermis is characteristic feature of :-

A

Dicot stem

B

Monocot stem

C

Monocot as well as dicot stem

D

Hydrophytes

Question 49: Palette 49/212

Allen MCQ

Innumerable (many) vascular bundles, lack of cambium and lack of a well demarcated pith is found in :-

A

Sugarcane, Grass

B

Sunflower, Neem

C

Radish, Neem

D

Pea, Peepal

Question 50: Palette 50/212

Allen MCQ

Cortex and pith are not distinguished in :-

A

Monocot stem

B

Monocot root

C

Dicot stem

D

Dicot root

Question 51: Palette 51/212

Allen MCQ

What is the characteristics of a vascular bundle of monocot stem -

A

Open and surrounded by a scleren-
chymatous bundle sheath.

B

Closed and not surrounded by bundle
sheath.

C

Closed and surrounded by bundle sheath.

D

Open and not surrounded by a bundle
sheath.

Question 52: Palette 52/212

Allen MCQ

Water cavity & V or Y-shaped xylem occurs in

A

Dicot stem

B

Monocot root

C

Monocot stem

D

Dicot root

Question 53: Palette 53/212

Allen MCQ

Vascular bundles are scattered in ground tissue in :-

A

Maize stem

B

Sunflower stem

C

Gram root

D

Isobilateral leaf

Question 54: Palette 54/212

Allen MCQ

The hypodermis present in maize stem is -

A

Parenchymatous

B

Collenchymatous

C

Sclerenchymatous

D

Meristematic

Question 55: Palette 55/212

Allen MCQ

How many types of cells are present in vascular cambium of dicot stem

A

Two types, fusiform & ray initial

B

Only fusiform initial

C

Only ray initial

D

Three types fusiform, ray and medullary rays.

Question 56: Palette 56/212

Allen MCQ

In monocot stems, secondary growth cannot occur because vascular bundles are

A

Scattered

B

Open

C

Closed

D

Radial

Question 57: Palette 57/212

Allen MCQ

There is no result of 'Girdling Experiment' in monocot plants, due to :-

A

Presence of wax layer on the surface of its stem.

B

Stem is comparatively thin.

C

Phloem is inside xylem.

D

Vascular bundles are not in specific position.

Question 58: Palette 58/212

Allen MCQ

Conjoint, Collateral, open vascular bundle and vascular bundles are arranged in a ring in :-

A

Dicot stem

B

Monocot stem

C

Monocot root

D

Dicot Root

Question 59: Palette 59/212

Allen MCQ

Position of xylem & phloem in leaf respectively -

A

Abaxial & Adaxial

B

Adaxial & Abaxial

C

Both Adaxial

D

Both abaxial

Question 60: Palette 60/212

Allen MCQ

In leaves, the vascular bundles are :

A

Bicollateral & open

B

Collateral & open

C

Collateral & closed

D

Radial & exarch

Question 61: Palette 61/212

Allen MCQ

For a critical study of secondary growth in plants, which one of the following pairs is suitable?

A

Wheat and maiden hair fern

B

Sugarcane and sunflower

C

Teak and pine

D

Deodar and fern

Question 62: Palette 62/212

Allen MCQ

In dicot stem, hypodermis is

A

Parenchymatous

B

Sclerenchymatous

C

Collenchymatous

D

Chlorenchymatous

Question 63: Palette 63/212

Allen MCQ

Which wood conduct sap :-

A

Heart wood

B

Sap wood

C

Wood with lots of fibres and tyloses

D

All of the above

Question 64: Palette 64/212

Allen MCQ

Phelloderm is formed by :-

A

Vascular cambium

B

Phellogen

C

Fascicular cambium

D

Interfascicular cambium

Question 65: Palette 65/212

Allen MCQ

Dendrochronology is the study of determination of :-

A

Height of a tree

B

Diameter of a tree

C

Age of a tree with the help of annual rings

D

Counting of the number of branches

Question 66: Palette 66/212

Allen MCQ

A timber merchant told his customer that log of wood which he was purchasing comes from a 20 years old tree, he told so by inspecting the :-

A

Diameter of log

B

Thickness of the heart wood

C

Number of cork layers

D

Annual rings

Question 67: Palette 67/212

Allen MCQ

In trees, the annual rings represent :-

A

Primary xylem

B

Secondary xylem

C

Secondary phloem

D

Cambium

Question 68: Palette 68/212

Allen MCQ

Annual rings are formed due to the activity of:

A

Intrastelar cambium

B

Intercalary cambium

C

Extrastelar cambium

D

Primary cambium

Question 69: Palette 69/212

Allen MCQ

When a tree grows older which of the following increased rapidly :-

A

Heart wood

B

Sap wood

C

Pith

D

Cortex

Question 70: Palette 70/212

Allen MCQ

Which of the following provide maximum mechanical strength to a tree trunk.

A

Heart wood

B

Sap wood

C

Cork

D

Late wood

Question 71: Palette 71/212

Allen MCQ

Extra stelar secondary growth in dicot stem occurs due to the activity of

A

Intrafascicular cambium

B

Interfascicular cambium

C

Vascular cambium

D

Cork cambium

Question 72: Palette 72/212

Allen MCQ

Normally secondary growth takes place in -

A

Dicots & Monocots

B

Gymnosperms & Monocots

C

Dicots & Gymnosperms

D

Only in dicots

Question 73: Palette 73/212

Allen MCQ

Formation of which tissue is example of dedifferentiation

A

Interfascicular cambium

B

Apical meristem

C

Intrafascicular cambium

D

Intercalary meristem

Question 74: Palette 74/212

Allen MCQ

What is the fate of primary phloem in dicot stem after sec growth

A

Compresses outside and degenerates

B

Compresses inside and degenerates

C

Becomes part of sec phloem

D

Modifies in sclerenchyma

Question 75: Palette 75/212

Allen MCQ

Which tissue remains more active during spring

A

Cork cambium

B

Vascular cambium

C

Parenchyma

D

Sclerenchyma

Question 76: Palette 76/212

Allen MCQ

Cork cambium is

A

Always primary meristem

B

Always secondary meristem

C

May be secondary or primary meristem

D

Partly primary & partly secondary meristem

Question 77: Palette 77/212

Allen MCQ

Normally in dicot stems, phellogen develops from :-

A

Hypodermis

B

Phellem

C

Endodermal cells

D

Epidermal & pericycle cells

Question 78: Palette 78/212

Allen MCQ

Suberin in chiefly deposited in the cells of :-

A

Sclerenchyma

B

Collenchyma

C

Cork

D

Phelloderm

Question 79: Palette 79/212

Allen MCQ

Which of the following is a meristematic tissue:

A

Phellem

B

Phellogen

C

Phelloderm

D

Periderm

Question 80: Palette 80/212

Allen MCQ

The common bottle cork is a product of :-

A

Xylem

B

Vascular Cambium

C

Dermatogen

D

Phellogen

Question 81: Palette 81/212

Allen MCQ

Secondary growth in dicots and gymnosperms occurs by :-

A

Formation of vascular rays.

B

Thickening of tracheary elements.

C

Formation of meristematic cells in vascular region.

D

Development of meristematic cells in vascular & cortical regions

Question 82: Palette 82/212

Allen MCQ

The balloon like outgrowths of parenchyma in the lumen of a vessel are known as

A

Histogen

B

Tyloses

C

Phellogen

D

Tunica

Question 83: Palette 83/212

Allen MCQ

Which of the following tissues originate from ray initials of cambium

A

Tracheids & vessels

B

Sieve tubes & companion cells

C

Xylem & phloem fibres

D

Radial rows of parenchyma

Question 84: Palette 84/212

Allen MCQ

Cork is an excellent material for making bottle stopper because it is

A

Cheap

B

Easily available

C

Air tight

D

Light

Question 85: Palette 85/212

Allen MCQ

Secondary growth is the production of

A

New tissues from intercalary meristem

B

New conduction cells

C

New tissues from lateral meristem

D

New ground cells

Question 86: Palette 86/212

Allen MCQ

Each annual ring consists of two strips of

A

Autumn & spring wood

B

Heart wood & sap wood

C

Xylem and phloem

D

Cork & cortex

Question 87: Palette 87/212

Allen MCQ

An example of monocots showing secondary growth in stem is

A

Lilium

B

Pea

C

Asparagus

D

Yucca

Question 88: Palette 88/212

Allen MCQ

Heartwood differs from sapwood in :

A

Being susceptible to pests and pathogens

B

Presence of rays and fibres

C

Absence of vessels and parenchyma

D

Having dead and non-conducting elements

Question 89: Palette 89/212

Allen MCQ

Autumn wood can be differentiated from spring wood by :-

A

Broad vessels and tracheids

B

Narrow vessels and tracheids

C

Red colour of xylem

D

Cambium

Question 90: Palette 90/212

Allen MCQ

Vascular cambium forms :-

A

Secondary xylem & Secondary phloem

B

Primary xylem & Primary Phloem

C

Only Secondary phloem

D

Only Primary xylem

Question 91: Palette 91/212

Allen MCQ

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?

A

Secondary xylem

B

Secondary phloem

C

Protoxylem

D

Cortical cells

Question 92: Palette 92/212

Allen MCQ

Tracheids differ from other tracheary elements in:

A

Having casparian strips

B

Being imperforate

C

Lacking nucleus

D

Being lignified

Question 93: Palette 93/212

Allen MCQ

A major characteristic of the monocot root is the presence of :

A

Scattered vascular bundles

B

Vasculature without cambium

C

Cambium sandwiched between phloem and xylem along the radius

D

Open vascular bundles

Question 94: Palette 94/212

Allen MCQ

In a ring girdled plant:

A

The root dies first

B

The shoot and root die together

C

Neither root nor shoot will die

D

The shoot dies first

Question 95: Palette 95/212

Allen MCQ

Vascular bundles in monocotyledons are considered closed because:

A

Cambium is absent

B

There are no vessels with perforations

C

Xylem is surrounded all around by phloem

D

A bundle sheath surrounds each bundle

Question 96: Palette 96/212

Allen MCQ

Read the different components from (a) to (d) in the Column given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem:
(a) Secondary cortex (b) Wood
(c) Secondary phloem (d) Phellem
The correct order is :

A

(d), (c), (a), (b)

B

(c), (d), (b), (a)

C

(a), (b), (d), (c)

D

(d), (a), (c), (b)

Question 97: Palette 97/212

Allen MCQ

Specialised epidermal cells surrounding the guard cells are called :-

A

Complementary cells

B

Subsidiary cells

C

Bulliform cells

D

Lenticels

Question 98: Palette 98/212

Allen MCQ

Cortex is the region found between :-

A

Endodermis and pith

B

Endodermis and vascular bundle

C

Epidermis and stele

D

Pericycle and endodermis

Question 99: Palette 99/212

Allen MCQ

The balloon-shaped structures called tyloses :-

A

Are extensions of xylem parenchyma cells into vessels

B

Are linked to the ascent of sap through xylem vessels

C

Originate in the lumen of vessels

D

Characterize the sapwood

Question 100: Palette 100/212

Allen MCQ

The vascular cambium normally gives rise to

A

Primary phloem

B

Secondary xylem

C

Periderm

D

Phelloderm

Question 101: Palette 101/212

Allen MCQ

Which of the following is made up of dead cells?

A

Collenchyma

B

Phellem

C

Phloem

D

Xylem parenchyma

Question 102: Palette 102/212

Allen MCQ

Identify the wrong statement in context of heartwood:

A

It is highly durable

B

It conducts water and minerals efficiently

C

It comprises dead elements with highly lignified walls

D

Organic compounds are deposited in it

Question 103: Palette 103/212

Allen MCQ

Stomata in grass leaf are

A

Dumb-bell shaped

B

Kidney shaped

C

Rectangular

D

Barrel shaped

Question 104: Palette 104/212

Allen MCQ

Secondary xylem and phloem in dicot stem are produced by

A

Apical meristems

B

Vascular cambium

C

Phellogen

D

Axillary meristems

Question 105: Palette 105/212

Allen MCQ

Casparian strips occur in

A

Epidermis

B

Pericycle

C

Cortex

D

Endodermis

Question 106: Palette 106/212

Allen MCQ

Plants having little or no secondary growth are:

A

Grasses

B

Deciduous angiosperms

C

Conifers

D

Cycads

Question 107: Palette 107/212

Allen MCQ

Xylem translocates :-

A

Water only

B

Water and mineral salts only

C

Water, mineral salts and some organic nitrogen only

D

Water, mineral salts, some organic nitrogen and hormones

Question 108: Palette 108/212

Allen MCQ

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following :

A

Closure of stomata

B

Flaccidity of bulliform cells

C

Shrinkage of air spaces in spongy mesophyll

D

Tyloses in vessels

Question 109: Palette 109/212

Allen MCQ

Phloem in gymnosperms lacks :

A

Albuminous cells and sieve cells

B

Sieve tubes only

C

Companion cells only

D

Both sieve tubes and companion cells

Question 110: Palette 110/212

Allen MCQ

Which of the statements given below is not true about formation of Annual Rings in trees?

A

Annual ring is a combination of spring wood and autumn wood produced in a year.

B

Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively

C

Activity of cambium depends upon variation in climate.

D

Annual rings are not prominent in trees of temperate region.

Question 111: Palette 111/212

Allen MCQ

In the dicot root the vascular cambium originates from :-

A

Tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem.

B

Cortical region.

C

Parenchyma between endodermis and pericycle.

D

Intrafascicular and interfascicular tissue in a ring.

Question 112: Palette 112/212

Allen MCQ

Regeneration of damaged growing grass following grazing is largely due to :-

A

Lateral meristem

B

Apical meristem

C

Intercalary meristem

D

Secondary meristem

Question 113: Palette 113/212

Allen MCQ

The transverse section of a plant shows following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
Identify the category of plant and its part :-

A

Dicotyledonous root

B

Monocotyledonous stem

C

Monocotyledonous root

D

Dicotyledonous stem

Question 114: Palette 114/212

Allen MCQ

Identify the incorrect statement.

A

Due to deposition of tannins, resins, oils etc., heart wood is dark in colour

B

Heart wood does not conduct water but gives mechanical support

C

Sapwood is involved in conduction of water and minerals from root to leaf

D

Sapwood is the innermost secondary xylem and is lighter in colour

Question 115: Palette 115/212

Allen MCQ

Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are

A

Lenticels

B

Guard cells

C

Bundle sheath cells

D

Bulliform cells

Question 116: Palette 116/212

Allen MCQ

Which of the following statements about cork cambium is incorrect?

A

It forms secondary cortex on its outer side

B

It forms a part of periderm

C

It is responsible for the formation of lenticels

D

It is a couple of layers thick

Question 117: Palette 117/212

Allen Match the Columns

Match Column-I with Column-II.

Select the correct answer from the options given below.

Column-I	Column-II
(a) Cells with active cell division capacity (b) Tissue having all cells similar in structure and function (c) Tissue having different types of cells (d) Dead cells with highly thickened walls and narrow lumen	(i) Vascular tissues (ii) Meristematic tissue (iii) Sclereids (iv) Simple tissue

A

a-ii b-iv c-i d-iii

B

a-iv b-iii c-ii d-i

C

a-i b-ii c-iii d-iv

D

a-iii b-ii c-iv d-i

Question 118: Palette 118/212

Allen Match the Columns

Match Column -I with Column -II.

Choose the correct answer from the options given below.

Column-I	Column-II
(a) Lenticels (b) Cork cambium (c) Secondary cortex (d) Cork	(i) Phellogen (ii) Suberin deposition (iii) Exchange of gases (iv) Phelloderm

A

a-iv, b-i, c-iii, d-ii

B

a-iii, b-i, c-iv, d-ii

C

a-ii, b-iii, c-iv, d-i

D

a-iv, b-ii, c-i, d-iii

Question 119: Palette 119/212

Allen MCQ

Select the correct pair.

A

Large colorless empty – Subsidiary cells
cells in the epidermis
of grass leaves

B

In dicot leaves, vascular – Conjunctive bundles are surrounded tissue by large thick-walled cells

C

Cells of medullary rays – Interfascicular that form part of cambium cambial ring

D

Loose parenchyma cells – Spongy rupturing the epidermis parenchyma and forming a lens-shaped opening in bark

Question 120: Palette 120/212

Allen MCQ

Read A to D and tell the correct order of components from outer side to inner side in a young dicot stem. () Cortex (B) Pericycle (C) Epidermis (D) Pith

A

C, D, B, A

B

A, B, C, D

C

C, A, B, D

D

C, B, A, D

Question 121: Palette 121/212

Allen MCQ

During secondary growth in dicot stem, cork cambium or phellogen usually develops in

A

Epidermal region

B

Cortex region

C

Pericycle region

D

Pith region

Question 122: Palette 122/212

Allen MCQ

Transport of water and mineral in higher plants takes place through

A

Sieve elements

B

Companion cells

C

Tracheids

D

Transfusion tissue

Question 123: Palette 123/212

Allen MCQ

Read the following statements about the vascular bundles :- (a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii. (b) Conjoint closed vascular bundles do not process cambium. (c) In open vascular bundles, cambium is present in between xylem and phloem. (d) The vascular bundles of dicotyledonous stem possess endarch protoxylem. (e) In monocotyledonous root, usually there are more than six xylem bundles present.
Choose the correct answer from the options given below :-

A

(b), (c), (d) and (e) only

B

(a), (b), (c) and (d) only

C

(a), (c), (d) and (e) only

D

(a), (b) and (d) only

Question 124: Palette 124/212

Allen MCQ

The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.

A

It is also called as the earlywood

B

In spring season cambium produces xylem elements with narrow vessels

C

It is lighter in colour.

D

The springwood along with autumn-wood shows alternate concentric rings forming annual rings.

E

It has lower density

Question 125: Palette 125/212

Allen MCQ

Select the correct statement related to the activity of cork cambium.

A

The cork differentiated from cork cambium, is impervious to water due to deposition of tannins and resins

B

Cuts the cells only on the outer side

C

Cuts the cells on inner as well as outer side.

D

The outer cells differentiate into phelloderm

Question 126: Palette 126/212

Allen MCQ

Axillary buds are derived from the activity of:

A

Secondary meristem

B

Apical meristem

C

Intercalary meristem

D

Lateral meristem

Question 127: Palette 127/212

Allen MCQ

Which of the following is not a character of collenchyma tissue?

A

They occur in layers below epidermis in dicotyledonous plants.

B

They consists of cells with thick corners due to cellulose deposition

C

They are usually dead and without protoplasts.

D

They provide mechanical support to the growing part of the plant

Question 128: Palette 128/212

Allen MCQ

Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of :

A

Epiblema

B

Cortex

C

Endodermis

D

Pericycle

Question 129: Palette 129/212

Allen MCQ

The type of tissue commonly found in the fruit wall of nuts is :

A

Parenchyma

B

Collenchyma

C

Sclerenchyma

D

Sclereid

Question 130: Palette 130/212

Allen MCQ

Interfascicular cambium is present between

A

Primary xylem and primary phloem

B

Pericycle and endodermis

C

Two vascular bundles

D

Secondary xylem and secondary phlo

Question 131: Palette 131/212

Allen MCQ

Given below are two statements :- Assertion (A) : Late wood has fewer xylary elements with narrow vessels. Reason (R) : Cambium is less active in winters. In the light of the above statements, choose the correct answer from the options given below :-

A

Both A and R are true but R is NOT the correct explanation of A.

B

A is true but R is false.

C

A is false but R is true.

D

Both A and R are true and R is the correct explanation of A.

Question 132: Palette 132/212

Allen MCQ

Given below are two statements :- Statement-I : Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body. Statement-II : Exarch condition is the most common feature of the root system. In the light of the above statements, choose the correct answer from the options given below :-

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

Question 133: Palette 133/212

Allen MCQ

Identify the correct statements: A. Lenticels are the lens-shaped openings permitting the exchange of gases. B. Bark formed early in the season is called hard bark. C. Bark is a technical term that refers to all tissues exterior to vascular cambium. D. Bark refers to periderm and secondary phloem. E. Phellogen is single-layered in thickness. Choose the correct answer from the options given below:

A

A and D only

B

A, B and D only

C

B and C only

D

B, C and E only

Question 134: Palette 134/212

Allen MCQ

The transverse section of a plant part showed polyarch, radial and exarch xylem, with endodermis and pericycle. The plant part is identified as :

A

Monocot root

B

Dicot root

C

Dicot stem

D

Monocot stem

Question 135: Palette 135/212

Allen MCQ

Consider the following plant tissues:
(A) Axillary buds
(B) Fascicular vascular cambium
(C) Interfascicular cambium
(D) Cork cambium
(E) Intercalary meristem
Identify the lateral meristems among the above.

A

(A), (C) and (D) only

B

(B), (C) and (D) only

C

(A), (B), (C) and (E) only

D

(A), (B), (D) and (E) only

Question 136: Palette 136/212

Allen MCQ

Bulliform cells are responsible for

A

Inward curling of leaves in monocots.

B

Protecting the plant from salt stress.

C

Increased photosynthesis in monocots.

D

Providing large spaces for storage of sugars.

Question 137: Palette 137/212

Allen MCQ

In the given figure, which component has thin outer walls and highly thickened inner walls?

A

C

B

D

C

A

D

B

Question 138: Palette 138/212

Allen MCQ

Formation of interfascicular cambium from fully developed parenchyma cells is an example for :-

A

Differentiation

B

Redifferentiation

C

Dedifferentiation

D

Maturation

Question 139: Palette 139/212

Allen MCQ

Which of the following simple tissues are commonly found in the fruit walls of nuts and pulp of pear?

A

Sclereids

B

Fibres

C

Parenchyma

D

Collenchyma

Question 140: Palette 140/212

Allen MCQ

Which one of the following is not found in Gymnosperms?

A

Sieve cells

B

Albuminous cells

C

Tracheids

D

Vessels

Question 141: Palette 141/212

Allen MCQ

Which of the following helps in maintenance of the pressure gradient in sieve tubes?

A

Albuminous cells

B

Sieve cells

C

Phloem parenchyma

D

Companion cells

Question 142: Palette 142/212

Allen MCQ

Given below are two statements :- Statement-I : In a dicotyledonous leaf, the adaxial epidermis generally bears more stomata than the abaxial epidermis. Statement-II : In a dicotyledonous leaf, adaxially placed palisade parenchyma is made up of elongated cells, which are arranged vertically and parallel to each other. In the light of the above statements, choose the correct answer from the options given below :-

A

Statement I is true but Statement II is false

B

Statement I is false but Statement II is true

C

Both Statement I and Statement II are true

D

Both Statement I and Statement II are false

Question 143: Palette 143/212

Allen MCQ

Branch of botany related with study of internal structure of plants.

A

Cytology

B

Anatomy

C

Physiology

D

Ecology

Question 144: Palette 144/212

Allen MCQ

A tissue is a group of cells having a -

A

Common origin and dissimilar in function.

B

Dissimilar origin and common in function.

C

Dissimilar origin and common in function

D

Common origin and usually preforming a common function.

Question 145: Palette 145/212

Allen MCQ

In embryonic stage, cells are

A

Collenchymatous

B

Sclerenchymatous

C

Meristematic

D

Parenchymatous

Question 146: Palette 146/212

Allen MCQ

Apical meristem is present

A

At the tips of roots

B

At the tips of shoots

C

In buds which are present in axils of leaves

D

All of the above

Question 147: Palette 147/212

Allen MCQ

Which of the following is an example of primary meristem

A

Phellogen

B

Vascular cambium of root

C

Inter fascicular cambium

D

Intra fascicular cambium

Question 148: Palette 148/212

Allen MCQ

Which of the following are examples of lateral meristems

A

Fascicular vascular cambium

B

Inter-fascicular cambium

C

Cork cambium

D

All of the above

Question 149: Palette 149/212

Allen Match the Columns

Find out the correct match pairs from the given table:- Match Column-I, Column-II and Column-III

Column-I	Column-II	Column-III
(A) Dicot stems (B) Monocot stems (C) Dicot roots (D) Monocot roots	(I) Pericycle (II) Closed vascular bundle (III) Casparian strips (IV) Hypodermis	(P) only collenchyma (Q) cambium absent (R) suberised (S) collenchyma

A

i, iv

B

i, ii, iii

C

ii, iii

D

i, iii, iv

Question 150: Palette 150/212

Allen MCQ

Which of the following statement(s) is/are true about parenchyma?

A

The cells are generally isodiametric

B

The cells may either be closely packed or have intercellular spaces.

C

It performs various functions like photosynthesis, storage & secretion.

D

All of the above

Question 151: Palette 151/212

Allen MCQ

Which of the following tissue provides mechanical support to the growing parts of the plant such as young stem and petiole of a leaf.

A

Parenchyma

B

Collenchyma

C

Sclereids

D

Fibres

Question 152: Palette 152/212

Allen MCQ

Which of the following is observed in sunflower plant?

A

B

C

D

Question 153: Palette 153/212

Allen MCQ

Companion cells are present in the phloem of

A

Pteridophytes

B

Gymnosperms

C

Angiosperms

D

Both (1) and (2)

Question 154: Palette 154/212

Allen MCQ

Vessels differ from tracheids in having

A

In being living

B

Presence of perforation plates at both ends

C

Enucleated condition

D

All of the above

Question 155: Palette 155/212

Allen MCQ

Identify the given diagramatic sketch and select the correct option in respect of diagram?

A

Hypostomatic leaf

B

Amphistomatic leaf

C

Found in monocot plant

D

Presence of bulliform cells towards abaxial surface.

Question 156: Palette 156/212

Allen MCQ

When a meristematic tissue "Intra fascicular cambium" is present inside a vascular bundle, the vascular bundle is called

A

Conjoint

B

Open

C

Closed

D

Radial

Question 157: Palette 157/212

Allen MCQ

Which of the following is not included in stomatal apparatus

A

Stomatal aperture

B

Guard cells

C

Subsidiary cells

D

Sclerenchymatous cells

Question 158: Palette 158/212

Allen MCQ

Consider the following statements. (a) Phloem fibres are made up of sclerenchymatous cells. (b) Phloem parenchyma are generally present in monocots. (c) The first formed primary phloem consists of narrow sieve tube and is referred to as protophloem and the later formed phloem has bigger sieve tubes and is referred to as metaphloem. Which statement(s) is/are false?

A

Only a

B

Only b

C

Only c

D

a, b, and c

Question 159: Palette 159/212

Allen MCQ

The outside of the epidermis is often covered with a waxy thick layer, called

A

Hypodermis

B

Cuticle

C

Root hair

D

Stem hair

Question 160: Palette 160/212

Allen MCQ

Cuticle is absent in

A

Roots

B

Dicot Stem

C

Leaves

D

Monocot stem

Question 161: Palette 161/212

Allen MCQ

In which plant vascular bundles are scattered in ground tissue and each vascular bundle is surrounded by sclerenchymatous bundle sheath

A

Maize

B

Sunflower

C

Gram

D

Ficus

Question 162: Palette 162/212

Allen MCQ

In below mentioned structure, how many structures are having 'Exarch' condition of vascular bundles. 'Dicot stem, Dicot root, Monocot stem, monocot root, Isobilateral leaf, Dorsivendral leaf'.

A

4

B

3

C

2

D

All of these

Question 163: Palette 163/212

Allen MCQ

The dicot root is identified from the monocot root by the presence of

A

Exarch xylem

B

2-4 xylem bundles

C

>6 xylem bundles

D

Large and well developed pith

Question 164: Palette 164/212

Allen MCQ

Parenchymatous cells with large intercellular spaces which occupy the central portion of the stem constitute

A

Cortex

B

Pith

C

Hypodermis

D

Epidermis

Question 165: Palette 165/212

Allen MCQ

In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These cells are called

A

Bulliform cells

B

Starch sheath cells

C

Companion cells

D

Complimentary cells

Question 166: Palette 166/212

Allen MCQ

In dicot stem, the cells of cambium present between primary xylem and primary phloem is the

A

Interfascicular cambium

B

Vascular cambium

C

Intra fascicular cambium

D

Cork cambium

Question 167: Palette 167/212

Allen MCQ

The innermost layer of cortex of dicot root is characterised by presence of suberin thickening. This suberin thickening occurs on

A

Radial walls

B

Transverse wall

C

Tangential wall

D

Both (1) & (3)

Question 168: Palette 168/212

Allen Match the Columns

Identify correct match from the Column-I, Column-II and Column-III.

Column-I	Column-II	Column-III
(A) Epidermis (B) Hypodermis (C) Endodermis (D) Pith	(I) Trichomes (II) Casparian strips (III) Inconspicuous (IV) Sclerenchymatous	(P) Dicot root (Q) Monocot stem (R) Dicot stem (S) Monocot root

A

B-a-iii, A-d-ii, C-b-i, D-c-i

B

A-a-iii, B-b-ii, C-d-iv, D-c-i

C

B-d-ii, A-a-iii, C-b-iv, D-c-

D

A-a-iii, B-a-iv, C-c-i, D-b-ii

Question 169: Palette 169/212

Allen MCQ

Regarding to stele which of the following statement is correct?

A

All the tissues lies inner to pericycle

B

All the tissues lies inner to endodermis

C

All the tissues lies inner to hypodermis

D

All the tissues lies inner to epidermis

Question 170: Palette 170/212

Allen MCQ

Complimentary cells are formed by the activity of

A

Vascular cambium

B

Inter fascicular cambium

C

Phellogen

D

Intra fascicular cambium

Question 171: Palette 171/212

Allen MCQ

Vascular cambium cuts off cells more

A

Towards centre

B

Towards periphery

C

Both (1) and (2)

D

None of these

Question 172: Palette 172/212

Allen MCQ

In a dicot root, vascular cambium originates from.

A

Parenchymatous conjunctive tissue located just below phloem bundles

B

Medullary rays

C

A portion of pericycle tissue, lying opposite to protoxylem

D

Both (1) and (3)

Question 173: Palette 173/212

Allen MCQ

In a dicot root, the pericycle gives rise to

A

Lateral roots

B

Cork cambium

C

A portion of vascular cambium

D

All of the above

Question 174: Palette 174/212

Allen MCQ

Select true statement

A

Lenticels occur in woody trees

B

Bark is a non-technical term

C

Vascular cambium and cork cambium are examples of lateral meristems

D

All of the above

Question 175: Palette 175/212

Allen MCQ

During secondary growth in dicot stem, At some places, the cambium forms a narrow band of parenchyma, which passes through the secondary xylem and secondary phloem in radial directions. These are called :-

A

Sap wood

B

Heart wood

C

Secondary medullary rays

D

Primary medullary rays (4) Both Statement-I & Statement-II is incorrect.

Question 176: Palette 176/212

Allen MCQ

Statement-I: in dicot stem, cork cambium develop usually in steler region. Statement-II :cork cambium cuts off phelloderm on outside and phellem on inner side.

A

statement-I & statement-II both are correct

B

statement-I is correct & statement-II is incorrect

C

statement-I is incorrect & statement-II is correct

D

Both statement-I & statement-II is incorrect.

Question 177: Palette 177/212

Allen MCQ

At certain regions, the phellogen cuts off closely arranged parenchymatous cells on the outer side instead of cork cells. These are called :-

A

Phellem

B

Periderm

C

Bark

D

Complimentary cells

Question 178: Palette 178/212

Allen MCQ

The cells of secondary cortex are :-

A

Sclerenchymatous

B

Parenchymatous

C

Collenchymatous

D

Meristematic

Question 179: Palette 179/212

Allen MCQ

In dicot root, the vascular cambium is.

A

Primary in origin

B

Completely secondary in origin

C

Both primary and secondary in origin

D

Neither primary nor secondary in origin

Question 180: Palette 180/212

Allen MCQ

Due to continuous growth of secondary xylem which of the following get crushed gradually

A

Primary phloem

B

Earlier formed secondary phloem

C

Either (1) or (2)

D

Both (1) and (2)

Question 181: Palette 181/212

Allen MCQ

After secondary growth what is the actual future of primary xylem?

A

Converts into secondary xylem

B

Remains more or less intact in or around the centre

C

Converts into secondary phloem

D

Gets crushed

Question 182: Palette 182/212

Allen MCQ

In plants, during early embroyonic condition

A

All cells of the embryo divide

B

Meristematic activity is confined to single apical cell

C

Meristematic activity is confined to a group of apical cells.

D

Apical & lateral cells only divide

Question 183: Palette 183/212

Allen MCQ

Statement-I: In old trees, the greater part of secondary Xylem is dark brown due to deposition of organic compounds like tannins, resins, oils, gum, aromatic substances and essential oils. Statement-II : The peripheral region of secondary phloem is lighter in colour and is also known as sapwood.

A

Statement-I & Statement-II both are correct.

B

Statement-I is correct & Statement-II is incorrect.

C

Statement-I is incorrect & Statement-II is correct.

D

Both Statement-I & Statement-II is incorrect.

Question 184: Palette 184/212

Allen MCQ

Identify the correct match from the column I and II :-

Column-I	Column-II
(a) Dicot stem (b) Monocot stem (c) Monocot root (d) Dicot root	(i) Tetrach (ii) Polyarch (iii) Starch sheath (iv) Scattered vascular bundle

A

$a \to \mathrm{iii}; b \to \mathrm{iv}; c \to \mathrm{ii}; d \to i$

B

$a \to \mathrm{iii}; b \to \mathrm{iv}; c \to \mathrm{i}; d \to \mathrm{ii}$

C

$a \to \mathrm{iv}; b \to \mathrm{iii}; c \to \mathrm{ii}; d \to i$

D

$a \to ii$ ; $b \to i$ ; $c \to iii$ ; $d \to iv$

Question 185: Palette 185/212

Allen MCQ

Sieve plates in angiosperms are -

A

Oblique & in lateral walls

B

Pitted & in end wall

C

Oblique & in end wall

D

Straight & in lateral wall

Question 186: Palette 186/212

Allen MCQ

Assertion :- Amount of secondary xylem is produced more than secondary phloem Reason :- The cambium is generally more active on the inner side than on the outer

A

Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

Assertion is True but the Reason is False.

D

Both Assertion & Reason are False.

Question 187: Palette 187/212

Allen MCQ

T.S. of a material exhibits conjoint, collateral endarch and closed bundles scattered in a ground tissue what should be the material -

A

Monocot root

B

Dicot root

C

Monocot stem

D

Dicot stem

Question 188: Palette 188/212

Allen MCQ

In respect of many grasses, the presence of bulliform or motor cells in the upper epidermis of leaves is to:-

A

Increase the surface area of the leaf

B

Store large amount of water

C

Check transpiration by reducing the surface area of the leaf

D

Bear unicellular trichomes

Question 189: Palette 189/212

Allen MCQ

Heart wood of most of the woody trees, fails to conduct sap due to the obstruction by?

A

Excess secondary wall deposition

B

Storing a variety of material by tyloses

C

Deposition of reserved food material

D

Ray parenchyma

Question 190: Palette 190/212

Allen MCQ

The trees growing in deserts will -

A

Show alternate rings of xylem and sclerenchyma

B

Show distinct annual rings

C

Not show distinct annual rings

D

Have only conjunctive tissue and phloem formed by the activity of cambium

Question 191: Palette 191/212

Allen MCQ

Sap wood differ from heart wood in being -

A

Darker and non-conducting

B

Softer and non-conducting

C

Lighter and conducting

D

Harder, darker and less conducting

Question 192: Palette 192/212

Allen MCQ

If a stem is girdled-

A

Root dies first

B

Shoot dies first

C

Both die together

D

None of the above die

Question 193: Palette 193/212

Allen MCQ

Spring wood (early wood) differs with autumn wood (late wood) in -

A

Size of vessels and tracheids

B

Thickness of cell wall

C

Amount of wood

D

All the above

Question 194: Palette 194/212

Allen MCQ

Most conspicuous annual rings are formed in

A

Temperate evergreen plants

B

Tropical deciduous

C

Temperate deciduous plants

D

Tropical evergreen

Question 195: Palette 195/212

Allen MCQ

In dicot root which tissue becomes dead due to activity of phellogen

A

All tissue outside cortex

B

Tissue outside hypodermis

C

Tissue outside endodermis

D

Tissue outside pericycle

Question 196: Palette 196/212

Allen MCQ

Physiologically functional part of wood is

A

Heart wood only

B

Sap wood only

C

Only primary wood

D

Both heart wood & sap wood

Question 197: Palette 197/212

Allen MCQ

Find out the correct match.

A

Spring wood-Wood formed during autumn, Autumn wood- Wood formed during spring, Hear wood-Lighter in colour

B

Spring wood-Wood formed during spring season, Autumn wood-Wood formed during autumn season, Hear wood-Dead elements with highly lignified wall

C

Spring wood-Late wood, Autumn wood-Early wood, Hear wood-Teloses

D

Spring wood-Dark in colour, Autumn wood-Light in colour, Heart wood-Phellem

Question 198: Palette 198/212

Allen MCQ

Which is not correct about heartwood

A

It is formed of living cells

B

It contains resins, tannin and other organic contents

C

It is of dark coloured

D

It lies in the central region of secondary xylem

Question 199: Palette 199/212

Allen MCQ

Which of the following statements are correct :-
(a) In the spring season vascular cambium produce large number of xylary elements.
(b) Spring wood is lighter in colour with high density.
(c) In the winter season vascular cambium produce vessel with narrow lumen.
(d) Autumn wood is darker in colour with high density.

A

a, b, c

B

b, c, d

C

a, c, d

D

a, b, c, d

Question 200: Palette 200/212

Allen MCQ

After two or three years of secondary growth the cortex in dicot roots

A

Remains intact

B

Is completely sloughed away

C

Is largely lost

D

Is converted into cork

Question 201: Palette 201/212

Allen MCQ

When secondary growth in thickness is initiated in a dicot root, which of the following happens first?

A

Cambial initials between xylem and phloem will divide

B

Pericycle strands, outside the primary xylem will divide

C

Periclinal division takes place, so that the cambium becomes circular

D

Parenchymatous cells between xylem and phloem become meristematic

Question 202: Palette 202/212

Allen MCQ

Complementary cells of lenticels are

A

Compact and suberised

B

Closely arranged and non-suberised

C

Compact and lignified

D

Loose and lignified

Question 203: Palette 203/212

Allen MCQ

In a woody dicotyledonous tree, which of the following parts will mainly consist of primary permanent tissues?

A

Stem and root

B

All parts

C

Shoot tips and root tips

D

Flowers, fruits and leaves

Question 204: Palette 204/212

Allen MCQ

Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by :-

A

Position of protoxylem

B

Absence of secondary xylem

C

Absence of secondary phloem

D

Presence of cortex

Question 205: Palette 205/212

Allen MCQ

The cork cambium, cork and secondary cortex are collectively called :-

A

Phelloderm

B

Phellogen

C

Periderm

D

Phellem

Question 206: Palette 206/212

Allen MCQ

Some vascular bundles are described as open because these :

A

Are not surrounded by pericycle

B

Are surrounded by pericycle but no endodermis

C

Are capable of producing secondary xylem and phloem.

D

Possess conjunctive tissue between xylem and phloem.

Question 207: Palette 207/212

Allen MCQ

Water containing cavities in vascular bundles are found in :-

A

Cycas

B

Pinus

C

Sunflower

D

Maize

Question 208: Palette 208/212

Allen MCQ

Closed vascular bundles lack :-

A

Cambium

B

Pith

C

Ground tissue

D

Conjunctive tissues

Question 209: Palette 209/212

Allen MCQ

Companion cells are closely associated with:

A

Trichomes

B

Guard cells

C

Sieve elements

D

Vessel elements

Question 210: Palette 210/212

Allen MCQ

Age of a tree can be estimated by :

A

Diameter of its heartwood

B

Its height and girth

C

Biomass

D

Number of annual rings

Question 211: Palette 211/212

Allen MCQ

Interfascicular cambium develops from the cells of:

A

Pericycle

B

Medullary rays

C

Xylem parenchyma

D

Endodermis

Question 212: Palette 212/212

Allen MCQ

Lenticels are involved in :

A

Photosynthesis

B

Transpiration

C

Gaseous exchange

D

Food transport