Biology Instinct Insects are neumerout invertebrate animals that belong in the Phylum Arthropoda and Class Insecta. The class Insecta is divide into 2 subclasses: Apterygota, or wingless insects, and Pterygota, or winged insects. Subclass Pterygota is futher dissever on basis of metamorphosis. Insects that have submit tone incomplete metamorphosis are the Exopterygota. Insects that undergo complete metamorphosis are the Endopterygota. Insects have an outer zygomorphous exoskeleton to which the muscles are attached to and provides protection for internal organs.
The bod y is divided into 3 main parts which are the head, which include mouthparts, eyes, and antennae; thorax, which melt down the jointed legs and /or wings; and abdomen, which has organs for digested food, reproducing, and getting relinquish of waste products. The major systems in insects are the circulatory, respiratory, nervous, muscular, digestive, and reproductive systems. In the circulatory s...If you want to get a full essay, revise it on our website:
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