Quiz on Animal Kingdom

7. The canal system in sponges develops due to

1. Porous walls
2. Gastrovascular system
3. Reproduction
4. Folding of inner walls

8. Select the correct pair

1. Arthropoda- silver fish
2. Pisces- jelly fish
3. Echinodermata- cuttle fish
4. Mollusca- star fish

9. Which group does not contain polyp?

1. Anthozoa
2. Hydrozoa
3. Scyphozoa
4. Calcarea