Ametabolism is a type of growth or life cycle in insects in which there is slight or no metamorphosis, only a gradual increase in size. It is present only in primitive wingless insects: the orders Archaeognatha and Zygentoma. See also Hemimetabolism Holometabolism References External links http://www.biology-online.org/dictionary/Ametabolism https://en.wiktionary.org/wiki/ametabolic Insect developmental biology