1. Describe the force-pump mechanism used by amphibians. 2. How is the length of the intestine correlated with herbivorous and carnivorous species? Why is this so? 3. What is the significance of...

1. Describe the force-pump mechanism used by amphibians.

2. How is the length of the intestine correlated with herbivorous and carnivorous species? Why is this so?

3. What is the significance of having three semicircular canals in the inner ear, each lying in a different plane?

4. What is meant by sexual dimorphism? Give several examples.

5. Explain how environmental factors control the periodicity of breeding in ectotherms.

6. Define paedomorphosis.