Home Biology Animal Kingdom Skill Builder Which one of the following statements about …
Biology Animal Kingdom Skill Builder Single Correct MCQ
Published on: August 21, 2026

Which one of the following statements about body cavity in certain animal groups are correct?

A
Molluscs are acoelomates
B
Insects are pseudocoelomates
C
Flatworms are coelomates
D
Roundworms are pseudocoelomates

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The correct answer is:

                    

Platyhelminthes, also called flat worms are acoelomates i.e. there is absence of

coelom in their body cavity. Phylum Mollusca and Arthropoda includes organism with true coelom that is derived from mesodermal layer. Roundworms are also called Aschelminthes and are pseudocoelomates as the coelom present is not derived from the mesoderm.

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