A water vascular system is characteristically present in:

1.	Annelids	2.	Porifers
3.	Echinoderms	4.	Cartilaginous fishes

In which of the following animals, the body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk?

Which of the following is not an Arthropod characteristic?

Insects are not characterized by:
1. The main body segments – head, thorax and abdomen
2. Three pairs of legs
3. Two pairs of antennae
4. Excretion by Malpighian tubules

Flame cells are excretory structures seen in:

Euplectella [Venus Flower Basket], shown in the figure below, belongs to:

Pinworm, Hookworm, and Filaria worm belong to:

Icthyophis is a/an:

Water exits from a sponge through the:

Which one of the following is not a poisonous snake?