Boojho wants to know why caterpillars need to shed their skin when they grow bigger but we humans do not.

Do you have any idea?

During its life-cycle a silkworm undergoes changes in different phases. Caterpillar is one such phase. Next phase is of silk moth which is totally different from caterpillar in shape and size. To go in that phase caterpillar has to shed its skin.

Humans do not undergo such drastic changes during their growth; only size of their body parts change. So, they do not require to shed their skin.