Question

Echinoderms are

• A. enterocoelomates
• B. pseudocoelomates
• C. schizocoelomates
• D. acoelomates

Answer 1

The correct option is A enterocoelomates

Echinoderms, hemichordates and chordates are enterocoelomates. Their coelom is formed from the pouches pinched off from the gut (enteron).

Annelids, arthropods and molluscs are schizocoelomates. Their coelom is formed from the splitting of mesoderm.

Animals belonging to Platyhelminthes are acoelomates as there is no coelom.

Animals belonging to Aschelminthes are pseudocoelomates and the coelom is not lined by mesoderm, instead, the mesoderm is scattered as pouches in between the body wall and gut wall.