Birds have wings, which help in flying. Insects Some insects have one or two pairs of wings for flying e.g. butterfly. The wings are different from those of birds, as they have no feathers. They are made of tiny colored scales. Some have six legs for movement, e.g. cockroaches and ants.
Grasshoppers use hind legs.
To build resting places like nests etc. To search for food To protect themselves from enemies. Feeding Organs Animals eat different types of food and have different types of feeding organs. They are classified on basis of the types of food they eat. They have sharp front teeth for biting and strong broad teeth for chewing.