Why are brain or spinal cord needed in the process of message moving from receptor to effector in humans?
Answer and explanation
Correct answer: They coordinate the message and decide a suitable response
A receptor detects a stimulus, but it does not decide what the body should do. The brain or spinal cord acts as the control centre: it receives and interprets the nerve message, selects an appropriate response, and sends instructions through motor neurons to an effector such as a muscle or gland. Therefore, option A is correct. The other options describe functions unrelated to nervous coordination.
Frequently asked questions
What is the correct answer to this question?
They coordinate the message and decide a suitable response
Why is this the correct answer?
A receptor detects a stimulus, but it does not decide what the body should do. The brain or spinal cord acts as the control centre: it receives and interprets the nerve message, selects an appropriate response, and sends instructions through motor neurons to an effector such as a muscle or gland. Therefore, option A is correct. The other options describe functions unrelated to nervous coordination.
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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