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Increase in the length of plants is
- primary growth
- Secondary growth
- elongation
- lateral growth
- N/A
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Answer: A Explanation: -
Increase in plant girth or on.the lateral sides of root and shoot is known as
- primary growth
- Secondary growth
- elongation
- lateral growth
- N/A
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Answer: B Explanation: -
Secondary gwoth occurs due to cell division in
- vascular cambium
- cork cambium
- apical meristem
- both a and b
- N/A
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Answer: D Explanation: -
Cylinders of actively dividing cells in primary xylem and primary phloem
- cork cambium
- vascular cambium
- apical meristem
- intercalary meristems
- N/A
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Answer: B Explanation: -
Secondary xylem and secondary phloem is developed by
- cork cambium
- vascular cambium
- apical meristem
- intercalary meristems
- N/A
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Answer: B Explanation: -
Heartwood is formed in
- outer part of secondary xylem
- inner part of secondary xylem
- companion cells
- seiev tube cells
- N/A
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Answer: B Explanation: -
The active conduction part of older trees is known as
- heart wood
- sap wood
- cortex
- seive tube
- N/A
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Answer: B Explanation: -
Resistance to decay and insect attack in some plants is usually provided by
- heart wood
- sap wood
- cortex
- epidermis
- N/A
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Answer: A Explanation: -
Callus in plants develops by
- cork cambium
- vascular cambium
- collenchyma tissue
- sclerenchyma tissue
- N/A
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Answer: B Explanation: -
Plant movements due to internal causes are termed as
- autonomic movement
- paratonic movement
- nastic movement
- tropic movement
- N/A
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Answer: A Explanation: