Page 248 - New Medley 4 Semester 1
P. 248

The larva of butterfly is known as

               caterpillar. It feeds on leaves and                 Knowledge Zone
               grows rapidly. After some time, it                  1.  The larva of housefly is called maggot.
                                                                   2.   The pupa is an inactive stage. It does not eat
               covers itself in a cocoon. Now, it is                  anything.
               called a pupa. Finally, the cocoon                  3.   A female giant toad can produce about

               bursts and the adult butterfly comes                   35,000 eggs at a time.
               out.

               Animals like fishes, reptiles and insects do not take care of their babies. Many

               of their babies do not survive as they are eaten up by other animals.

               Animals like birds and mammals take good care of their babies. They feed  them,
               clean them and keep them safe until they learn to look after themselves.


                                                                                                           • Understanding


                 Write True or False.
                   1.  Frogs lay eggs in water.

                   2.  Insects like the housefly have four stages in their life cycle.
                   3.  An adult cockroach comes out of its egg.

                   4.  The young ones of snakes get proper protection from their parents.
                   5.  Birds do not take care of their young ones.





                  AT ONE GO



                m  All animals produce young ones of their own kind.
                m  Some animals give birth to young ones, others lay eggs.

                m  Animals that lay eggs have different stages in their life cycle.
                m  Birds and mammals take care of their young ones.


                   REMEMBER THESE TERMS

                   Reproduce      :  To produce babies

                   Cocoon         :  The protective cover of pupa of a butterfly
                   Hatching       :  Coming out of the young chick from the egg after it has fully grown
                   Incubation     :  Sitting on eggs to hatch them by the warmth of the body

                   Moulting       :  Shedding off of the old skin



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