AP Biology/Unit 8/Note Packet
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Unit 8: Ecology

AP Biology — Note Packet

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Key Terms

Photoperiodism

The response of organisms to changes in ____ length, influencing behaviors like flowering or growing thicker coats.

Kinesis

A ____ movement in response to a stimulus, where the organism's speed or rate of turning changes, but not its specific ____.

Taxis

A ____ movement towards or away from a stimulus, such as a moth flying towards a light (positive ____).

Trophic Level

Each step in a food chain or food web, representing the position an organism occupies in the flow of ____.

Carrying Capacity (K)

The ____ population size that an environment can sustainably ____, often represented by the plateau of an S-curve in logistic growth.

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