Features of the external structure and internal organization of insects depend on:
Belonging to the type Arthropods: chitinous cover, articulated body structure.
Belongings to the class Insects: 3 parts of the body (head, chest, abdomen), 6 legs, 2 pairs of wings, antennae – organs of smell, palps – organs of touch; faceted eyes.
The internal structure has features associated with flight: blood is not involved in the transport of oxygen, it is delivered directly through the trachea, which encircle each organ.
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