Explanation:

laying eggs :after mating ,the female silk moths lays hundreds of egg on the mulberry leaves

hatching into larvae or caterpillars:the eggs hatch into worms CALLED larvae or caterpillars , also known as silk worms.The caterpillars feed on mulberry leaves for 3-4 weeks then they shed their skin at least 4 times during this feeding stage . This PROCESS is known as mounting

formation of cocoon: after the final moult when the caterpillars have sufficiently grow in size , they cease to feed and begin to grow into pupa . the pupating caterpillars start secreting a thin , filament like substance from the salivary GLANDS located on either side of their head.the secretion also CONTAINS a protein called sericin that adheres two filaments together. caterpillars swing their heads from side to side in the form . the secretion hardens when it comes in contact with air and makes the filaments stick together to form fibres . the pups completely COVERS itself with these silk fibres . this covering with pupa inside is known as cocoon