question_answer 84)

  While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.

Answer:

                  Parasites have evolved special adaptations such as (i) The loss of unnecessary sense organs as in lice, mites and fleas don't have wings. (ii) Presence of adhesive organs or suckers to cling on to the host-in tapeworms and leeches. (iii) Loss of digestive system i.e., tapeworm. (iv) High reproductive capacity i.e., roundworm produces large progeny.