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ICSE Class 8 Neural Control and Coordination — practice questions — page 2

Explore 37 free Neural Control and Coordination questions in ICSE Class 8 Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Neural Control and Coordination questions and exercises with answers

Showing questions 31–37 of 37.

What is a nerve impulse?Read the answer and worked solution →Which route fits a simple spinal reflex?Read the answer and worked solution →A simple hand-withdrawal reflex has a relay neuron located:Read the answer and worked solution →Blinking to a threat and withdrawing a hand use which reflex centres?Read the answer and worked solution →Which response is inborn rather than learned?Read the answer and worked solution →A dog learns to salivate to a tone repeatedly paired with food. What kind of response is this?Read the answer and worked solution →Where does grey matter lie in cerebrum and spinal cord?Read the answer and worked solution →

Worked practice questions

What is a nerve impulse?

  1. A junction between two nerve cells
  2. A bundle of axons within a covering
  3. A signal travelling along a nerve fibre
  4. A cell sending signals towards an effector
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Correct answer: C. A signal travelling along a nerve fibre

A nerve impulse is the signal conducted along nerve fibres.

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Which route fits a simple spinal reflex?

  1. Receptor → CNS → motor → sensory → effector
  2. Receptor → sensory → CNS → motor → effector
  3. Receptor → motor → CNS → sensory → effector
  4. Effector → sensory → CNS → motor → receptor
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Correct answer: B. Receptor → sensory → CNS → motor → effector

A receptor starts sensory input to the CNS, which sends motor output to an effector.

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A simple hand-withdrawal reflex has a relay neuron located:

  1. In the hypothalamus
  2. Within the cerebellum
  3. Within the spinal cord
  4. In the cerebral cortex
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Correct answer: C. Within the spinal cord

A relay neuron inside the spinal cord connects sensory input to motor output in a typical hand-withdrawal reflex.

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