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Chapter 17 Coordination and Control - 5
1.
Plants respond to stimuli by regulating their growth and development.
a) True
b) False
2.
Abscisic acid inhibits abscission
a) True
b) False
3.
In the skin, heat receptors are 10 times more abundant than cold receptors.
a) True
b) False
4.
Nissl’s granules are present in the cell body of neuron.
a) False
b) True
5.
In a reflex arc, direction of stimulus is from effectors to motor neuron to associative neuron and then through sensory neurons to receptors.
a) False
b) True
6.
Nerve impulse is a wave of electromechanical changes along the length of neuron
a) False
b) True
7.
A single neuron may form synapses with many incoming fibres of different neurons
a) False
b) True
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