Q. Which of the following combinations is incorrect?
A. Nematoda – roundworms, pseudocoelomate
B. Calcarea – gastrovascular cavity, coelom present
C. Echinodermata – coelom present, bilateral symmetry
D. Platyhelminthes – gastrovascular cavity, flatworms, acoelomate
Answer: Calcarea – gastrovascular cavity, coelom present
