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
- AAlstonia, Calotropis and China rose
- BChina rose, Alstonia and Claotropis
- CCalotropis Chian rose and Alstonia
- 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.