The animals with bilateral symmetry in the young stage and radial pentamerous symmetry in the adult stage, belong to the phylum:

1.	Mollusca	2.	Cnidaria
3.	Echinodermata	4.	Annelida

In Arthropoda, the head and thorax are often fused to form a cephalothorax, but in which one of the following classes, is the body divided into head, thorax, and abdomen?

1. Myriapoda

2. Crustacea

3. Arachnida and Crustacea

4. Insecta 

One of the following is a very unique feature of the mammalian body:

1. Presence of diaphragm

2. Four-chambered heart

3. Rib cage

4. Homeothermy

What is true for Mammalia:

Which of the following character is not found in all the chordates:

1. Diaphragm

2. Coelom

3. Pharyngeal gill clifts

4. Dorsal nerve cord

Which gland secretes odourous secretion in mammals:

1. Bartholins

2. Prostate

3. Anal gland

4. Liver-bile

The similarity between Ascaris lumbricoides and Anopheles stephensi is:
1. Sexual dimorphism
2. Metamerism
3. Anaerobic respiration
4. Endoparasitism

In which of the following, the notochord is present in the embryonic stage?

In which animal nerve cell is present but the brain is absent:

1. Sponge

2. Earthworm

3. Cockroach

4. Hydra

Which of the following animals have scattered cells with cell–tissue grade organization:

1. Sponge

2. Hydra

3. Liver fluke

4. Ascaris