8.1

Responses to the Environment

AP Biology

Responses to the Environment

Signal transduction in organisms

Plant responses to the environment

Major plant hormones

Tropisms: directional growth responses

How phototropism works

Photoperiodism

Plant defense responses

Animal responses to the environment

Nervous system responses

Endocrine system responses

Homeostasis through feedback loops

Animal behaviors

Circadian rhythms

Behavioral ecology

Vocabulary