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Question
How many of the given plants show phyllotaxy, where single leaf arises at each node ?
Alstonia, Brassica, Calotropis, Chilli, Chinarose Guava, Datura, Sunflower
How many of the given plants show phyllotaxy, where single leaf arises at each node ?
Alstonia, Brassica, Calotropis, Chilli, Chinarose Guava, Datura, Sunflower
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Solution
The correct option is C Four
Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. This is usually of three types-alternate, opposite and whorled.In the alternate type of phyllotaxy, a single leaf arises at each node in an alternate manner, as in china rose, sunflower, chilli, and datura.In opposite type, a pair of leaves arises at each node and lie opposite to each other as in Calotropis and guava plants.If more than two leaves arise at a node and form a whorl, it is called whorled, as in Alstonia and Brassica.
Therefore, the option (C) is correct.
Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. This is usually of three types-alternate, opposite and whorled.
In the alternate type of phyllotaxy, a single leaf arises at each node in an alternate manner, as in china rose, sunflower, chilli, and datura.
In opposite type, a pair of leaves arises at each node and lie opposite to each other as in Calotropis and guava plants.
If more than two leaves arise at a node and form a whorl, it is called whorled, as in Alstonia and Brassica.
Therefore, the option (C) is correct.
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