411.
The common bottle cork is a product of:
A
Dermatogen
B
Phellogen
C
Xylem
D
Vascular Cambium
Answer :
Phellogen
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412.
Primary growth is caused by
A
Apical meristem
B
Lateral meristem
C
Dermatogen
D
Plerome
Answer :
Apical meristem
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413.
Vascular tissues in flowering plants develop from:
A
phellogen
B
plerome
C
periblem
D
dermatogen
Answer :
plerome
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414.
Conjoint, collateral and closed vascular bundles are found in
A
Monocot stem
B
Monocot root
C
Dicot stem
D
Dicot root
Answer :
Monocot stem
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415.
The outermost primary meristem gives rise to
A
Epidermis
B
Procambium
C
Ground meristem
D
All of the above
Answer :
Epidermis
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416.
Companion cells are closely associated with:
A
Sieve elements
B
Vessel elements
C
Trichomes
D
Guard cells
Answer :
Sieve elements
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417.
Vascular cambium cuts cells more activity
A
Towards centre
B
Towards periphery
C
In winter
D
In roots
Answer :
Towards centre
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418.
Secondary growth occurs in
A
Formation and division of meristematic cells
B
Vascular region
C
Cortical region
D
Both B and C regions
Answer :
Both B and C regions
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419.
If a stem is girdled
A
Root dies first
B
Shoot dies first
C
Both die together
D
None of the above
Answer :
Root dies first
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420.
Intrafascicular cambium is situated
A
In between the vascular bundles
B
Inside the vascular bundles
C
Outside the vascular bundles
D
In pith
Answer :
Inside the vascular bundles
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