Survival and reponse Flashcards
1
Q
How do organisms increase their chance of survival?
A
By responding to changes in the external environment and changes in their internal environment so that the conditions are always optimal for their metabolism
2
Q
What is a stimulus?
A
Any change in the internal or external environment
3
Q
What are two types of simple responses?
A
Taxis
Kinesis
4
Q
What is a taxis response?
A
a directional movement in response to a stimulus.
The direction of the stimulus affects the response
5
Q
What is an example of a taxis response?
A
Woodlice move away from a light source as they are concealed in the dark from predators
6
Q
What is a kinesis response?
A
Non-directional random movements in response to a stimulus
The intensity of the stimulus affects the response
