a detectable change in the internal or external environment of an organism that produces a response
1 of 8
Receptors
transducers that transfer the energy of a stimulus into a form that can be processed by the organism and leading to a response
2 of 8
Effectors
include cells, tissues, organs that carry out a response
3 of 8
taxis
– A simple response where direction of movement is determined by the direction of the stimulus. An organism can respond directly to a change in the environment by moving its body either: Towards stimulus (positive taxis) or Away from stimulus
4 of 8
Kinesis
a response resulting in random movements. • Organism does not move towards/away from the stimulus. • The more intense the stimulus, the more rapid the movements. • Kinesis is important when the stimulus is ‘less’ directional such as heat or humidity.
5 of 8
Tropism
a growth movement of part of a plant in response to a directional stimulus
6 of 8
Positive phototropic
shoots grow towards light
7 of 8
Positive geotropic
roots grow downwards
8 of 8
Other cards in this set
Card 2
Front
transducers that transfer the energy of a stimulus into a form that can be processed by the organism and leading to a response
Back
Receptors
Card 3
Front
include cells, tissues, organs that carry out a response
Back
Card 4
Front
– A simple response where direction of movement is determined by the direction of the stimulus. An organism can respond directly to a change in the environment by moving its body either: Towards stimulus (positive taxis) or Away from stimulus
Back
Card 5
Front
a response resulting in random movements. • Organism does not move towards/away from the stimulus. • The more intense the stimulus, the more rapid the movements. • Kinesis is important when the stimulus is ‘less’ directional such as heat or humidity.
Comments
No comments have yet been made