Question

Assertion (A): Molecular evidence suggests the sister group of sponges is Mesomycetozoa, not choanoflagellates. Reason (R): Sponge collar cells resemble choanoflagellates, suggesting a common ancestor.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (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.

Hint:

Sponges have “Collar cells” (Choanocytes). Choanoflagellates have “Collars.” They are the closest relatives!

Answer 1

The Correct Option is D