Question

E.
Give reasons.
1. Mammals can maintain their body temperature whereas reptiles cannot
2. Toads and salamanders can survive both on land and in water
3.
Molluscs body have hard calcareous shell
4. Nematodes are commonly called roundworms​

Answer 1

Answer:

1. Reptiles are ectotherms. They depend on external sources to provide them heat compared to the mammals that are endotherms who generate heat on their own. They do produce heat on their own. But it is too low to maintain their body temperature.

2. Well they are cold blooded and their body temperature changes according to the environment they are in. Their eyelids are modified in a way that they can see both inside and outside water. They have webbed feet which helps them swim inside water and skip outside water

3. Molluscs have hard shell so that they can protect themselves from predators. once they have their food, they can go back into their shell since their actual body is too soft and they make an easy prey

4. They are called roundworms because they have a round body structure and psuedocoelum

Answer 2

Answer:

please complete it and with correct answer