1Why are snake, lizard, crocodile and tortoise placed in the class Reptilia?
2How are birds adapted for flying? Write any four features.
3Differentiate between poikilothermic and homoeothermic animals with examples.
4A bat can fly. Why is it called a mammal and not a bird?
5A whale lives in water, yet it is a mammal and not a fish. Give reasons.
6Differentiate between oviparous and viviparous animals with examples.
7Write any three differences between reptiles and amphibians.
8A pangolin's body is covered with scales. Which class does it belong to? Give reasons.
9Write any five characteristics of the class Mammalia.