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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