Does a insects skeleton grow outside of its body?

No, an insect's skeleton does not grow outside of its body. Insects have an exoskeleton, which means that their skeleton is on the outside of their body. This exoskeleton is made of a hard material called chitin, and it provides protection for the insect's body and support for its muscles.

As an insect grows, its exoskeleton cannot expand, so the insect must shed its exoskeleton in order to grow larger. This process is called molting, and it occurs multiple times throughout an insect's life. During molting, the insect will secrete a new exoskeleton underneath the old one, and then the old exoskeleton will split open and the insect will emerge with a new, larger exoskeleton.