In which situation should a student understand that not just one organ but the whole pathway is important in a control system?
Answer and explanation
Correct answer: Receptors are normal but motor nerve is damaged and response does not occur
The governing concept is the integrated control pathway: receptor, sensory pathway, control centre, motor pathway and effector must work together. If receptors detect a stimulus normally but the motor nerve is damaged, the command cannot reach the effector, so the expected response fails. Therefore A demonstrates why the whole pathway matters. B denies communication, C reduces understanding to memorisation, and D concerns plant growth rather than pathway integrity.
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What is the correct answer to this question?
Receptors are normal but motor nerve is damaged and response does not occur
Why is this the correct answer?
The governing concept is the integrated control pathway: receptor, sensory pathway, control centre, motor pathway and effector must work together. If receptors detect a stimulus normally but the motor nerve is damaged, the command cannot reach the effector, so the expected response fails. Therefore A demonstrates why the whole pathway matters. B denies communication, C reduces understanding to memorisation, and D concerns plant growth rather than pathway integrity.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Nervous system.
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