When any plane passing through the central axis of the body divides the organism into two identical halves, the organism is called

Which of the protozoan is considered as connecting link between plants and animals ?

In Platyhelminthes

Which one of the following organisms as diploblastic ?

Radial symmetry occurs in

In coelomates, the problem of diffusion of food from gut to tissues is solved by

Which of the following is a fresh water sponge?

Comb jellies belong to

Which one of the sponge part corresponds to the mouth of other animals ?

Bath sponge is common name of –