Which features make mammals as most successful and dominant animals?

5

(a)

List out various excretory organs in different animals

5

(a)

Describe briefly the body wall of sponges.

5

(a)

Differentiate between polyp and medusa

5

(a)

List any six features of cartilaginous fishes.Give four examples of these.

5

(a)

Distinguish between Chordates and Non-Chordates

5

(a)

Diagrammatically show the types of symmetry in animals.

5

(a)

What are the symmetries based on which animals can be classified? Describe with appropriate diagram.

5

(a)

What are the key features of phylum Porifera? Write in detail.

5

(a)

Describe economic importance of the largest phylum.

5

(a)