BotanyA and B are twigs with with 20 leaves each. A belongs China-rose and B to Calotropis. Then how many nodes are present in twig A and twig B respectively.

A and B are twigs with with 20 leaves each. A belongs China-rose and B to Calotropis. Then how many nodes are present in twig A and twig B respectively.

  1. A

    20 and 10

  2. B

    10 and 20

  3. C

    20 and 20

  4. D

    10 and 10

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    Solution:

    China-rose has alternate phyllotaxy i.e. every node has only one leaf. Hence twig A has 20 nodes. Twig B of Calotropis has opposite phyllotaxy with two leaves at each node. 20 leaves are present at 10 nodes.

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