Real organs are absent in

• GB Living Organisms

Real organs are absent in

1. Mollusca
2. Coelenterata
3. Arthropoda
4. Echinodermata

Answer

Coelentrates are multicellular, diploblastic and acoelomate animals having tissue level of organisation i.e., they lack true organs. Mollusca, Arthropoda and Echinodermata have organ level of organisation.

The correct option is B.