Observe the figure given below and answer the following questions. i) Identify and name the stage of life cycle of silk moth given in the figure ii) What is the importance of this stage of silk moth.
Answers
Answer:
i)The female silk moth lays about 300 to 400 eggs at a time. The eggs hatch and the caterpillars or silkworms emerge. Inside the cocoon, the silkworm enters the second stageof its life (called the pupa) and then the third and final stage to become an adult moth.
ii)Silk moth shows complete metamorphosis that consists of four stages.
-It begins with the insect hatching from an egg into a soft worm-like larva.
Larvae have a very big appetite and they feed on mulberry leaves. They can eat several times their own body weight to store food.
-At the end of the larval stage, the insect makes a hard shell called cocoon, inside which it becomes a pupa. The pupa does not eat or move in this stage.
Silk is obtained from the cocoon.
-Inside the cocoon, the pupa changes into an adult silk moth. This adult silk moth can now live independently