Hemimetabolous insects, those with incomplete metamorphosis, change gradually by undergoing a series of molts. An insect molts when it outgrows its exoskeleton, which does not stretch and would otherwise restrict the insect's growth. The molting process begins as the insect's epidermis secretes a new epicuticle inside the old one. After this new epicuticle is secreted, the epidermis releases a mixture of enzymes that digests the endocuticle and thus detaches the old cuticle. When this stage is complete, the insect makes its body swell by taking in a large quantity of water or air, which makes the old cuticle split along predefined weaknesses where the old exocuticle was thinnest.:142 COUNT 5
QSN1 Incomplete metamorphosis insects are called? ANS1 Hemimetabolous QSN2 What kind of metamorphosis do hemimetabolous insects undergo? ANS2 incomplete QSN3 Do hemimetabolous insects change quickly or gradually? ANS3 gradually QSN4 Hemimetabolous insects gradually change by a series of what? ANS4 molts QSN5 Insect's molt when they outgrow what? ANS5 exoskeleton