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NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne What happens in a cocoon?
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What is the process that happens in a cocoon? What actually happens? Katie

A hormone-controlled process that transforms the caterpillar into a butterfly or moth (other insects as well as amphibians also go through metamorphosis.) Many of the caterpillar's individual cells actually change their function: so a skin cell might be become a wing cell, for example.

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