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25 Cards in this Set
- Front
- Back
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What is the Process leading to a Response |
Stimulus> Receptor> Coordination> Effector> Response |
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Do plants have a Nervous System |
No they use hormones to co-ordinate themselves |
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Whats is Phototrophism |
Growth in response to light |
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What is a Trophism |
A growth movement in response to a Stimulus from the environment |
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What is Hydrotrophism |
Growth in Response to Water |
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What is Gravotrophism |
Growth in Response to Gravity |
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Growth towards a stimulus is ------- Trophism |
Positive |
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Growth away from a Stimulus is -------- Trophism |
Negative |
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Where are Auxins found |
In the tip of the shoot |
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What do Auxins do |
Auxins diffuse down to the shaded side and speed up the growth of that side |
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What other Hormones are involved in the growth of plants |
Abiscisic Acid Cytokinins Gibberellins Ethenes |
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3 points about The Nervous System |
Works by nerve impulses transmitted through nerve cell
Nerve impulses travel fast and usually have an instant affect
Response is short lived |
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3 points about the Endocrine(Hormone) System |
Works by hormones transmitted through the bloodstream
Hormones travel more slowly and generally take longer to act
Response is usually long lasting |
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What does a coordinated response require |
Receptors to detect the Stimuli |
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What is the structure of a reflex arc |
Receptor to sensory neurone
Sensory neurone to CNS
Relay Neurone to Motor Neurone
Motor Neurone to Muscle |
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How does the eye act as as receptor |
Light enters through the Iris allowing vision. Impulses are than carried to the brain by the optic nerve |
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How can responses be controlled by nervous system |
Work by nerve impulses transmitted through nerve cells
Nerve Impulses travel fast and usually have instant affect
Response is short lived |
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What is the route taken by the information in a reflex called |
Reflex arc |
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How can responses be controlled by the Endocrine system |
Works by Hormones transmitted through the blood stream
Hormones travel slowly generally take longer to act
Response is usually long lasting
Hormones can have widespread effects on different organs |
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What are impulses caused by |
Movements of charged particles (ions) in and out of the neurone |
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Impulses from receptors pass along nerves containing what |
Sensory neurons |
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From the sensory neurones where do the impulses go |
To the brain and spinal chord |
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What does the CNS consist of |
Sensory Neurons, Brain and Spinal Chord |
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What does the stimulation of receptors result in |
A response |
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What are the three types of neurones |
Sensory Relay Motor |
