Same chapter3 marksDifficulty: Medium
Draw a labelled diagram of the human eye and name the part that changes the focal length of the lens.
Nervous System
3 marksDifficulty: Medium
Distinguish between a sensory, a motor and a relay neuron.
Original Khojo Papers practice question — not from a past board paper.
Answer
A sensory neuron carries impulses from a receptor to the central nervous system. A motor neuron carries impulses from the central nervous system to an effector, a muscle or a gland. A relay or association neuron lies within the central nervous system and connects the other two.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A simple reflex arc uses all three.
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