Name the following.

(a) Incurable animal diseases.

(b) The animal that grows a pearl.

(c) The main crop required for sericulture.

(a) Diseases like Ranikhet and bird flu are incurable and it is necessary to vaccinate to cure such diseases.

(b) Pearls are obtained from marine animals called oyster.

(c) The main crop required for sericulture are mulberry and Ain leaves variety, the silkworm lives on mulberry leaves and other that eats Ain leaves are important.