In humid climate, function of spines in shrubs is
To defend against mammal herbivory
To defend against woodcutters
To reduce transpiration
To check seed predation by birds
Additional Questions
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In longitudinal section of a root, starting from the tip upward, the four zones occur in the following order: |
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In which of the following plants leaf apex is modified into tendril? |
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Parallel venation is found in: |
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Phylloclade is a modified |
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Rhizome is |
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Root cap is absent in |
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Which one of the following is considered important in the development of seed habit? |
Answer |
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From evolutionary point of view, tracheids and sieve cells are more primitive than tracheae and sieve tubes respectively. The angiosperms have: |
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Roots of which plant contain a red pigment which has affinity for oxygen? |
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Stem develops from |
Answer |