If a nerve message reaches the effector but the effector does not respond, where may the problem be?
Answer and explanation
Correct answer: In the effector organ
A response pathway includes detection by a receptor, transmission through sensory and motor neurons, processing by a coordinating centre, and action by an effector. The condition in the question says that the nerve message has already reached the effector, so the receptor and sensory pathway have successfully performed their roles. If no response follows, the effector itself, such as a muscle or gland, may be damaged or unable to act. Therefore C is correct; A, B, and D do not fit the stated evidence.
Frequently asked questions
What is the correct answer to this question?
In the effector organ
Why is this the correct answer?
A response pathway includes detection by a receptor, transmission through sensory and motor neurons, processing by a coordinating centre, and action by an effector. The condition in the question says that the nerve message has already reached the effector, so the receptor and sensory pathway have successfully performed their roles. If no response follows, the effector itself, such as a muscle or gland, may be damaged or unable to act. Therefore C is correct; A, B, and D do not fit the stated evidence.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
