2.76 sensitivity

• sensitivity is what organisms use to respond to changes in the environment
• changes in the environment (stimuli) include changes in:
-light
-temperature
-pressure
-chemical
• in order to be able to detect these changes organisms require to have receptors
• in order to respond to changes in the environment organisms require effectors e.g. muscles, glands
• the response ensures that the organism can survive the changes of the environment