KEY CONCEPT Insects show an amazing range of adaptations.

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Presentation transcript:

KEY CONCEPT Insects show an amazing range of adaptations.

Insects are the dominant terrestrial arthropods. Insects are in nearly every ecological niche. Insects have a body with three parts. head thorax abdomen thorax head abdomen

Some insects live independently, others live in social colonies.

Insects undergo metamorphosis. In incomplete metamorphosis, insects look like miniature adults when they hatch. There are three life stages of incomplete metamorphosis. larva nymph adult nymph stage larvae adult

In complete metamorphosis, the insect changes form entirely. Larva Egg Pupa Adult There are three life stages of incomplete metamorphosis. egg larva pupa adult

Insects have adapted to life on land. The evolution of flight occurred in insects 400 million years ago.

An insect’s mouth parts are adaptations related to its specialized diet. sucking mouth parts

chewing mouthparts

both sucking and chewing mouth parts

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