Why is reflex action faster than an action involving normal thinking?
Answer and explanation
Correct answer: The message path is shorter
A reflex action is a rapid, automatic response to a potentially harmful stimulus. The sensory impulse is routed through a short reflex arc, usually involving the spinal cord, which can send instructions to the effector before conscious thinking by the brain is completed. Therefore option A is correct. The signal is not carried by blood, the brain is not permanently inactive, and muscles do not generate the initial nerve message.
Frequently asked questions
What is the correct answer to this question?
The message path is shorter
Why is this the correct answer?
A reflex action is a rapid, automatic response to a potentially harmful stimulus. The sensory impulse is routed through a short reflex arc, usually involving the spinal cord, which can send instructions to the effector before conscious thinking by the brain is completed. Therefore option A is correct. The signal is not carried by blood, the brain is not permanently inactive, and muscles do not generate the initial nerve message.
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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