BotanyChoose the pair of plants that have two leaves at every node.

Choose the pair of plants that have two leaves at every node.

  1. A

    China-rose and Mustard

  2. B

    Sun flower and Alstonia

  3. C

    Calotropis and Guava

  4. D

    Nerium and Alstonia

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    Solution:

    Alternate phyllotaxy - one leaf is present at every node. It is the most common type of phyllotaxy. Ex: China-rose, mustard, Sun flower, families like Brassicaceae, Fabaceae, Solanaceae and Liliaceae.

    Opposite phyllotaxy - Two leaves are present at every node opposite to each other. It is common in Lamiaceae, Verbanaceae Ex: Guava, Calotropis

    Whorled phyllotaxy - More than two leaves are present at every node. Ex: Alstonia, Nerium

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