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Insects are neumerout

invertebrate animals that belong in the Phylum

Arthropoda and Class Insecta.

The class Insecta is divided into 2 subclasses:

Apterygota, or wingless

insects, and Pterygota, or winged insects. Subclass

Pterygota is further
divided

on basis of metamorphosis. Insects that have

undergone incomplete metamorphosis

are the Exopterygota. Insects that undergo

complete metamorphosis are the

Endopterygota.



Insects have an outer bilateral exoskeleton to which the

muscles are attached

to and provides protection for internal organs. The

body is divided into 3

main parts which are the head, which include mouthparts,

eyes, and antennae;

thorax, which operate the jointed legs and /or wings;

and abdomen, which has

organs for digested food, reproducing, and getting

rid of waste products.



The major systems in insects are the circulatory,

respiratory, nervous,

muscular, digestive, and reproductive systems. In the

circulatory system,......

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Approximate Word Count: 426
Approximate Pages: 2 (250 words per double-spaced page)

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