Although all insects molt and change body shape through their life, some of them
undergo only minor changes while most undergo extreme changes in structure and function.
Juvenile insects molt frequently during their journey to adulthood. A few insects exhibit no
change in body part proportions or modification of the body after molting, but most insects
accompany these molts with simple or dramatic alterations of body form called metamorphosis.
These changes may be accompanied by addition and/or subtraction of body parts, or they may
simply be alterations of body proportions.