Question

Class Amphibia (Subphylum a vertebrata) 1. Do they have any unique structures? (Why are they in this class and not another?) They are tetrapods (four leg) undergo metmorphosis They adapted to living on land They get oxygen through their skin & they have lungs, 2. What type of skin or body covering do they have? 3. How do they reproduce? 4. Is water necessary for reproduction? Yes, they lay eggs in water 5. Where do they live? found in moist habitats 6. What do they eat? 7. How do they breathe? 8. Common examples: frogs, toads, newts & Salamanders

Answer 1

2. Skin is coverd with scales, fully moist and glandular. In some animals skin is rough, dry etc. It can absorb water. and it also helps in respiration. Different glands like poison,mucous glands are present there.

3. Fertilization is external. Separate sexes are present. There are two phases in their life cycle. a) Larval phase. b) Adult phase.

6. They eat insects, worms, snails, small fish etc. Adult amphibians are carnivores. They catch the prey with the sticky ends of their own tongue.

7. Different respiratory organs are present. E.g- lungs, skin, gills, buccal cavity etc.