In a specimen-based viva, the examiner describes this case: a transparent marine animal swims by rows of fused cilia that look like shimmering combs. Choose the concept that fits it best.

Correct Answer: D

comb plates

Ctenophores are called comb jellies because they possess comb plates, or ctenes, made of fused cilia used in locomotion. This MCQ belongs to the Ctenophora topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.