NEETBotanyAnimal Kingdom
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Any plane passing through the central axis of the body divides the larva of Asterias into two identical halves. Reason (R): Adult Asterias exhibits radial symmetry, whereas its larval stage exhibits bilateral symmetry. In the light of the above statements, choose the most appropriate answer from th
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
D. (A) is not correct but (R) is correct
Step-by-step solution
The Assertion is incorrect because the larva of Asterias (an echinoderm) exhibits bilateral symmetry, meaning only a single plane can divide the organism into identical left and right halves. The definition provided in the Assertion describes radial symmetry. The Reason is correct as it accurately states that adult echinoderms are radially symmetrical while their larvae are bilaterally symmetrical. Answer: (A) is not correct but (R) is correct