7.13AB External and Internal Stimulus

A turning or growth movement by a plant or fungus in response to gravity.

• Gravitropism

• Photosynthesis

• Thermogenesis

• Phototropism

Response of a plant to grow toward or away from light.

• Gravitropism

• Photosynthesis

• Homeostasis

• Phototropism

A microorganism or virus that can cause disease.

• Homeostasis

• Stimulus

• Pathogen

• Phototropism

The turning or bending movement of a living organism or part of an organism toward or away from an external stimulus, such as light, heat, or gravity.

• Response

• Tropism

• Gravitropism

• Phototropism

Short-term physiological changes in response to stress that prepare the body for intense activity to avoid harm.

• Response

• Stimulus

• Fight or Flight

• Phototropism

A change in a system resulting from a stimulus.

• Response

• Stimulus

• Fight or Flight

• Homeostasis

An action or condition that provokes a response.

• Gravitropism

• Fight or Flight

• Response

• Stimulus

The tendency of an organism or cell to maintain a balanced state so as to maintain health and function.

• Tropism

• Homeostasis

• Response

• Stimulus

patho-

• disease

• light

• cancer

• surrounding

micro-

• insect

• something small

• deficiency

• above