What specific process must an insect undergo periodically to achieve an increase in body size?

Answer

Molting, also known as ecdysis

Because the rigid exoskeleton cannot stretch significantly, the insect must shed its entire old outer shell and replace it with a new, larger one formed beneath it in a process called molting or ecdysis.

What specific process must an insect undergo periodically to achieve an increase in body size?
insectstructureanatomyBoneinvertebrate