Coelom derived from blastocoel is known as

1.	Enterocoelom	2.	Psuedocoelom
3.	Haemocoelom	4.	Schizocoel

Besides Annelida and Arthropoda metamerism is found in

1. Platyhelminthes

2. Mollusca

3. Acanthocephala

4. Chordata

Coelom is a space between alimentary canal and body wall and is enclosed by

The "wheel animals" belong to the phylum

In contrast to annelids, the platyhelminthes show

Metameric segmentation is characteristic of

(1) Mollusca and chordata

(2) Platyhelminthes and arthropoda

(3) Echinodermata and annelida

(4) Annelida and arthropoda

Which of the following class of cnidarians lacks a medusa stage

What type of digestion is seen in Cnidaria?

Canal system is a trait found in

Classification of Porifera is based on