Which option gives the most complete sequence of a reflex arc?
Answer and explanation
Correct answer: Stimulus to receptor to sensory nerve to spinal cord to motor nerve to effector to response
The reflex arc follows a fixed functional sequence. A stimulus is detected by a receptor, and a sensory neuron carries the impulse to the spinal cord for rapid processing. A motor neuron then carries the outgoing impulse to an effector, such as a muscle or gland, which produces the response. Option A includes every essential stage in the correct order. The other sequences mix unrelated organs or reverse the pathway.
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What is the correct answer to this question?
Stimulus to receptor to sensory nerve to spinal cord to motor nerve to effector to response
Why is this the correct answer?
The reflex arc follows a fixed functional sequence. A stimulus is detected by a receptor, and a sensory neuron carries the impulse to the spinal cord for rapid processing. A motor neuron then carries the outgoing impulse to an effector, such as a muscle or gland, which produces the response. Option A includes every essential stage in the correct order. The other sequences mix unrelated organs or reverse the pathway.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Reflex action.
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