Question
Explain with suitable examples the different types of phyllotaxy.
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Answer
Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. It is of three types: alternate, opposite and whorled.
- Alternate Arrangement of Leaves: In alternate type of phyllotaxy, a single leaf arises at each node in alternate manner, as in China rose, mustard and sun flower plants.
- Opposite Arrangement of Leaves: In opposite type, a pair of leaves arise at each node and lie opposite to each other as in Calotropis and guava plants.
- Whorled Arrangement of Leaves: If more than two leaves arise at a node and form a whorl, it is called whorled, as in Alstonia.
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