Chapter 10

Chapter # 10

1. Write the importance of sponges?

2. Define polymorphism with example?

3. Difference b/w infestation and disinfestation?

4. Write names and uses of any two useful insects?

5. Give the role of swim bladder in bony fish?

6. Give commercial importance of shark?

7. Difference b/w radial and bilateral symmetry?

8. Difference b/w coelomates & acoelomates?

9. Difference b/w diploblastic & triploblastic animals?

10. Define regeneration and metamorphosis?

11. Give agriculture importance of earthworm?