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Assertion (A): The aggregates of the cell bodies or perikaryons of neurons form the synapse. Reason (R): Ganglia are the structures from which the nerve fibres may arise or enter into, whereas the

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Question

Assertion (A): The aggregates of the cell bodies or perikaryons of neurons form the synapse.

Reason (R): Ganglia are the structures from which the nerve fibres may arise or enter into, whereas the synapse connects two neurons with a small gap in between.

  1. A is True and R is False.
  2. A is False and R is True.
  3. Both A and R are True.
  4. Both A and R are False.

Options

  • (1)

  • (2)

  • (3)

  • (4)

MCQ
Assertion and Reasoning
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Solution

(2)

Explanation:

Aggregates of neuronal cell bodies, or perikarya, form ganglia, not synapses. Therefore, the Assertion (A) is false.

Ganglia are collections of neuron cell bodies associated with nerve fibres, whereas a synapse is the junction between two neurons separated by a very small gap called the synaptic cleft. Therefore, the Reason (R) is true.

Hence, A is false and R is true.

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Chapter 10: The Nervous System - Review Questions [Page 144]

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Selina Concise Biology [English] Class 10 ICSE
Chapter 10 The Nervous System
Review Questions | Q A. 12. | Page 144
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