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Anatomy Of Flowering Plants

212 Questions Start Allen Test
All Exams Allen
Q76 Allen 7. SECONDARY GROWTH 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
Q77 Allen 7. SECONDARY GROWTH MCQ
Normally in dicot stems, phellogen develops from :-
A.
Hypodermis
B.
Phellem
C.
Endodermal cells
D.
Epidermal & pericycle cells
Q78 Allen 7. SECONDARY GROWTH MCQ
Suberin in chiefly deposited in the cells of :-
A.
Sclerenchyma
B.
Collenchyma
C.
Cork
D.
Phelloderm
Q79 Allen 8. Anatomy of Flowering Plants MCQ
Which of the following is a meristematic tissue:
A.
Phellem
B.
Phellogen
C.
Phelloderm
D.
Periderm
Q80 Allen 8. Anatomy of Flowering Plants MCQ
The common bottle cork is a product of :-
A.
Xylem
B.
Vascular Cambium
C.
Dermatogen
D.
Phellogen
Q81 Allen 8. Anatomy of Flowering Plants 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
Q82 Allen 8. Anatomy of Flowering Plants MCQ
The balloon like outgrowths of parenchyma in the lumen of a vessel are known as
A.
Histogen
B.
Tyloses
C.
Phellogen
D.
Tunica
Q83 Allen 8. Anatomy of Flowering Plants 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
Q84 Allen 8. Anatomy of Flowering Plants MCQ
Cork is an excellent material for making bottle stopper because it is
A.
Cheap
B.
Easily available
C.
Air tight
D.
Light
Q85 Allen 8. Anatomy of Flowering Plants 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
Q86 Allen 8. Anatomy of Flowering Plants 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
Q87 Allen 8. Anatomy of Flowering Plants MCQ
An example of monocots showing secondary growth in stem is
A.
Lilium
B.
Pea
C.
Asparagus
D.
Yucca
Q88 Allen 8. Anatomy of Flowering Plants 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
Q89 Allen 8. Anatomy of Flowering Plants 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
Q90 Allen 8. Anatomy of Flowering Plants MCQ
Vascular cambium forms :-
A.
Secondary xylem & Secondary phloem
B.
Primary xylem & Primary Phloem
C.
Only Secondary phloem
D.
Only Primary xylem
Q91 Allen 9. PYQ 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
Q92 Allen 9. PYQ MCQ
Tracheids differ from other tracheary elements in:
A.
Having casparian strips
B.
Being imperforate
C.
Lacking nucleus
D.
Being lignified
Q93 Allen 9. PYQ 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
Q94 Allen 9. PYQ 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
Q95 Allen 9. PYQ 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
Q96 Allen 9. PYQ 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)
Q97 Allen 9. PYQ MCQ
Specialised epidermal cells surrounding the guard cells are called :-
A.
Complementary cells
B.
Subsidiary cells
C.
Bulliform cells
D.
Lenticels
Q98 Allen 9. PYQ MCQ
Cortex is the region found between :-
A.
Endodermis and pith
B.
Endodermis and vascular bundle
C.
Epidermis and stele
D.
Pericycle and endodermis
Q99 Allen 9. PYQ 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
Q100 Allen 9. PYQ MCQ
The vascular cambium normally gives rise to
A.
Primary phloem
B.
Secondary xylem
C.
Periderm
D.
Phelloderm