NEETBotanyMorphology of Flowering Plants
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Alstonia exhibits whorled phyllotaxy. Reason (R): In Alstonia , a pair of leaves arise at each node and lie opposite to each other. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
C. (A) is true but (R) is false
Step-by-step solution
Assertion (A) is true because Alstonia is a classic example of whorled phyllotaxy. Reason (R) is false because the statement describes opposite phyllotaxy (where a pair of leaves arise at each node and lie opposite to each other, as seen in Calotropis and guava). In whorled phyllotaxy, more than two leaves arise at a node and form a whorl. Therefore, (A) is true but (R) is false. Answer: (A) is true but (R) is false