① Morphological changes of some animals during individual development, for example, some insects (mosquitoes, flies, etc. ) goes through four stages: egg, larva, pupa and adult, which is called complete metamorphosis; Other insects (cicadas, locusts, etc. ) it becomes an adult directly without pupation, which is called incomplete metamorphosis; There are also some insects (lice, clothing fish and so on. After hatching from eggs, larvae are similar to adults in morphology and habits except for their small size and immature sex, which is called non-metamorphosis. In addition, frogs matured by tadpoles are also called metamorphosis. (2) The phenomenon that the structure, morphology and physiological functions of roots, stems and leaves of some plants have changed specially due to long-term environmental influence. Such as potato tubers, cactus needle leaves and so on. (3) refers to the abnormal state of human physiology and psychology (relative to' normal'): ~ psychology ~ reaction.
. abnormality
Biance
peaceful
An insect metamorphosis. In the process of individual development, insects only go through three stages: egg, nymph (or larva) and adult, and there is no pupal stage. Larvae living in water are called larvae, and larvae living on land are called nymphs. Such as locusts and dragonflies.
abnormality
Biance
peaceful
A mental illness. Thinking and behavior are different from ordinary people, and doing things often violates morality and ethics.
There are two kinds of metamorphosis, one is physical and physiological changes, male to female, female to male; The other is the change of psychology, spirit and behavior, which is different from ordinary people. I have a problem in my heart. People also have problems!