531.
Extra stellar secondary growth occurs due to the activity of
A
Intrafascicular cambium
B
Inter fascicular cambium
C
Vascular cambium
D
Cork cambium
Answer :
Cork cambium
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532.
A leaf which possess stomata exclusively its upper side is called
A
Oat type
B
Mulberry type
C
Lotus type
D
Cactus type
Answer :
Lotus type
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533.
Transport of water and dissolved minerals occurs through
A
Phloem
B
Xylem
C
Sieve Tubes
D
Sclerenchyma
Answer :
Xylem
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534.
Callose can occur in
A
Phloem parenchyma
B
Companion cells
C
Sieve tubes
D
Trachieds
Answer :
Sieve tubes
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535.
Non-porous wood is found in which plants
A
Dicots
B
Monocots
C
Gymnosperm
D
Cactus
Answer :
Gymnosperm
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536.
P-protein is a constituent of
A
Sieve tube elements
B
Xylem parenchyma
C
Parenchyma
D
Pericycle
Answer :
Sieve tube elements
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537.
Abnormal secondary growth occurs in
A
Cucurbita
B
Sunflower
C
Hordeum
D
Dracaena
Answer :
Dracaena
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538.
Passage cells are more distinct in endodermis of
A
Dicot stem
B
Monocot stem
C
Dicot root
D
Monocot root
Answer :
Monocot root
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539.
Common features between lenticels and hydathodes are
A
Both allow exchange of gases
B
Always remain closed
C
There is no regulation of their opening & closing
D
They occur on the same organ of plant
Answer :
There is no regulation of their opening & closing
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540.
Bottle work is obtained from
A
Betula Vulgaris
B
Eucalyptus
C
Calotropis procera
D
Quercus suber
Answer :
Quercus suber
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