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Explain with suitable examples the diffe...

Explain with suitable examples the different types of phyllotaxy?

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Arrangement of leaves on the stem or on the branches is called Phyllotaxy. It is of three types.
A) Alternate Phyllotaxy : A single leaf arises at each node arranged in alternate manner.
Ex : Hibiscus rosa-sinensis, mustard.
B) Opposite Phyllotaxy : A pair of leaves arise at each node and lie opposite to each other.
Ex : Calotropis, guava.
C) Whorled Phyllotaxy : More than two leaves arise at a node and form a whorl.
Ex : Nerium, Alstonia.
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