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Anatomy Of Flowering Plants

212 Questions Start Allen Test
All Exams Allen
Q51 Allen ANATOMY OF DICOT AND MONOCOT (STEM) 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.
Q52 Allen ANATOMY OF DICOT AND MONOCOT (STEM) MCQ
Water cavity & V or Y-shaped xylem occurs in
A.
Dicot stem
B.
Monocot root
C.
Monocot stem
D.
Dicot root
Q53 Allen ANATOMY OF DICOT AND MONOCOT (STEM) MCQ
Vascular bundles are scattered in ground tissue in :-
A.
Maize stem
B.
Sunflower stem
C.
Gram root
D.
Isobilateral leaf
Q54 Allen ANATOMY OF DICOT AND MONOCOT (STEM) MCQ
The hypodermis present in maize stem is -
A.
Parenchymatous
B.
Collenchymatous
C.
Sclerenchymatous
D.
Meristematic
Q55 Allen ANATOMY OF DICOT AND MONOCOT (STEM) 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.
Q56 Allen ANATOMY OF DICOT AND MONOCOT (STEM) MCQ
In monocot stems, secondary growth cannot occur because vascular bundles are
A.
Scattered
B.
Open
C.
Closed
D.
Radial
Q57 Allen ANATOMY OF DICOT AND MONOCOT (STEM) 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.
Q58 Allen ANATOMY OF DICOT AND MONOCOT (STEM) 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
Q59 Allen ANATOMY OF DICOT AND MONOCOT (LEAF) MCQ
Position of xylem & phloem in leaf respectively -
A.
Abaxial & Adaxial
B.
Adaxial & Abaxial
C.
Both Adaxial
D.
Both abaxial
Q60 Allen ANATOMY OF DICOT AND MONOCOT (LEAF) MCQ
In leaves, the vascular bundles are :
A.
Bicollateral & open
B.
Collateral & open
C.
Collateral & closed
D.
Radial & exarch
Q61 Allen SECONDARY GROWTH 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
Q62 Allen SECONDARY GROWTH MCQ
In dicot stem, hypodermis is
A.
Parenchymatous
B.
Sclerenchymatous
C.
Collenchymatous
D.
Chlorenchymatous
Q63 Allen SECONDARY GROWTH MCQ
Which wood conduct sap :-
A.
Heart wood
B.
Sap wood
C.
Wood with lots of fibres and tyloses
D.
All of the above
Q64 Allen SECONDARY GROWTH MCQ
Phelloderm is formed by :-
A.
Vascular cambium
B.
Phellogen
C.
Fascicular cambium
D.
Interfascicular cambium
Q65 Allen SECONDARY GROWTH 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
Q66 Allen SECONDARY GROWTH 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
Q67 Allen SECONDARY GROWTH MCQ
In trees, the annual rings represent :-
A.
Primary xylem
B.
Secondary xylem
C.
Secondary phloem
D.
Cambium
Q68 Allen SECONDARY GROWTH MCQ
Annual rings are formed due to the activity of:
A.
Intrastelar cambium
B.
Intercalary cambium
C.
Extrastelar cambium
D.
Primary cambium
Q69 Allen SECONDARY GROWTH MCQ
When a tree grows older which of the following increased rapidly :-
A.
Heart wood
B.
Sap wood
C.
Pith
D.
Cortex
Q70 Allen SECONDARY GROWTH MCQ
Which of the following provide maximum mechanical strength to a tree trunk.
A.
Heart wood
B.
Sap wood
C.
Cork
D.
Late wood
Q71 Allen SECONDARY GROWTH 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
Q72 Allen SECONDARY GROWTH MCQ
Normally secondary growth takes place in -
A.
Dicots & Monocots
B.
Gymnosperms & Monocots
C.
Dicots & Gymnosperms
D.
Only in dicots
Q73 Allen SECONDARY GROWTH MCQ
Formation of which tissue is example of dedifferentiation
A.
Interfascicular cambium
B.
Apical meristem
C.
Intrafascicular cambium
D.
Intercalary meristem
Q74 Allen SECONDARY GROWTH 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
Q75 Allen SECONDARY GROWTH MCQ
Which tissue remains more active during spring
A.
Cork cambium
B.
Vascular cambium
C.
Parenchyma
D.
Sclerenchyma