Which of the following is not a structural feature of an Axon?
(a) Node of Ranvier
(b) Myelin sheath
(c) Nissl granule
(d) Schwann cell
WBBSE
Class X
Life Science
01 (d) Nervous System
01 Mark
2023
(c) Nissl granule
Explanation
A neuron consists of three parts — cell body, dendrites, and axon. The axon is a long projection that transmits impulses away from the cell body. It is surrounded by Schwann cells, covered by a myelin sheath, and interrupted at intervals by Nodes of Ranvier. Nissl granules, however, are present only in the cytoplasm of the cell body and dendrites, not in the axon. Hence, they are not a structural feature of the axon.
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