If a student says all quick responses occur after thinking in the brain, which example disproves it?
Answer and explanation
Correct answer: गर्म वस्तु छूते ही हाथ हटना
The governing concept is reflex action. When the hand touches a hot object, sensory receptors send an impulse through a reflex arc, and the spinal cord rapidly coordinates the withdrawal before conscious thinking by the brain. Therefore, option A disproves the statement. Memorising, deliberate thinking, and drawing generally involve conscious brain activity, so they are not suitable counterexamples.
Frequently asked questions
What is the correct answer to this question?
गर्म वस्तु छूते ही हाथ हटना
Why is this the correct answer?
The governing concept is reflex action. When the hand touches a hot object, sensory receptors send an impulse through a reflex arc, and the spinal cord rapidly coordinates the withdrawal before conscious thinking by the brain. Therefore, option A disproves the statement. Memorising, deliberate thinking, and drawing generally involve conscious brain activity, so they are not suitable counterexamples.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
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