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NTA Abhyas NEET2020BotanyMorphology of Flowering PlantsPractice

In which of the following option correct examples of plants are represented respectively showing alternate, opposite, and whorled phyllotaxy?

Options

  1. AAlstonia, Calotropis and China rose
  2. BChina rose, Alstonia and Claotropis
  3. CCalotropis Chian rose and Alstonia
  4. DChina rose, Calotropis and Alstonia

Correct answer

D. China rose, Calotropis and Alstonia

Step-by-step solution

Phyllotaxy can be defined as the pattern of arrangement of leaves on the stem or branch. In alternate phyllotaxy a single leaf is originated at each node in alternate manner. Examples - mustard, sunflower and china rose. In opposite phyllotaxy, a pair of leaves is originated at each node and is arranged opposite to each other. Examples - Calotropis and guava plants. In Whorled phyllotaxy more than two leaves are originated at a node and form a whorl. Example - Alstonia.

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