Question

Haemocoel occurs in

• A. Coelenterata
• B. Porifera
• C. Annelida
• D. Arthropoda

Answer 1

The correct option is D Arthropoda

A. Coelenterata - There is no separate body cavity or coelom.

B. Porifera- The body wall encloses a large cavity, the spongocoel.

C. Annelida- The body cavity is a true coelom, as it is lined by a mesodermal coelomic epithelium. It is schizocoel.

D. Arthropoda- The body cavity around the viscera contains blood and it is called haemocoel. A true coelom is reduced to cavities in the reproduction.

So, the correct answer is "Arthropoda".