Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.
Stage 1: Egg The egg is laid by a female moth, which is mostly the size of small dots. A female moth lays more than 350 eggs at a time. In the springtime, the eggs hatch due to the warmth in the air. This procedure happens once in every year. Stage 2: Silkworm A hairy silkworm arises after the eggs crack Stage 3: Cocoon In this stage, silkworms spin a protective cocoon around itself. It is the size of a small cotton ball and is made of a single thread of silk. Stage 4: Pupa The pupa stage is a motionless stage. In this stage, people kill the pupa by plunging the cocoon into boiling water and unwind the silk thread.
