Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other ?

1. Parathormone - Calcitonin

2. Insulin - Glucagon

3. Aldosterone - Atrial Natriuretic Factor

4. Relaxin - Inhibin

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 1 Practice test neet Save WhatsApp Report

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Best answer

Answer: 4. Relaxin - Inhibin

Key idea: Antagonistic hormones have opposite effects.

Parathormone raises blood calcium; calcitonin lowers it.
Insulin lowers blood glucose; glucagon raises it.
Aldosterone retains Na⁺ and water (raises BP); ANF causes vasodilation and lowers BP.
Relaxin relaxes pelvic ligaments in childbirth; inhibin suppresses FSH. They do not oppose each other.

So (4) is the pair that is not antagonistic.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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