In which situation is knowing only hormone secretion not enough?
Answer and explanation
Correct answer: When target-cell receptors are defective but the hormone level is normal
A hormone produces an effect only when it reaches a suitable target cell and binds to a functional receptor. Consequently, measuring a normal hormone level does not prove that the target tissue can respond. If the receptors are defective, the hormone may be present in the blood but its message will not be transmitted properly. Thus option A is correct; the other options describe normal plant or reflex situations rather than a failure of hormone action.
Frequently asked questions
What is the correct answer to this question?
When target-cell receptors are defective but the hormone level is normal
Why is this the correct answer?
A hormone produces an effect only when it reaches a suitable target cell and binds to a functional receptor. Consequently, measuring a normal hormone level does not prove that the target tissue can respond. If the receptors are defective, the hormone may be present in the blood but its message will not be transmitted properly. Thus option A is correct; the other options describe normal plant or reflex situations rather than a failure of hormone action.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
