Communication

Question 1

Stimulus

Answer 1

Any change in the environment that causes a response

Question 2

Response

Answer 2

A change in behaviour or physiology as a result of a change in the environment

Question 3

Homeostasis

Answer 3

The maintenance of a stable internal environment within normal set limits despite changes in the environment

Question 4

Negative feedback

Answer 4

A process that responds to changes in the environment by returning the internal environment back to its steady state. Leads to homeostasis

Question 5

Positive feedback

Answer 5

A process that responds to changes in the environment by increasing the change in conditions. It is usually harmful and does not have a role to play in homeostasis.

Question 6

Endotherm

Answer 6

Organisms that maintain a constant core body temperature within set limits, independently of external temperature

Question 7

Ectotherm

Answer 7

Organism whose body temperature changes in response to the environmental temperature. They rely on external sources of heat to maintain their body temperature.