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If adrenaline secretion suddenly increases in a person, which change is most logical?

Answer and explanation

Correct answer: Increase in heartbeat and breathing rate

Adrenaline is a hormone released during danger, fear, or intense stress. It prepares the body for rapid action by increasing cardiac output and commonly increasing the rate and depth of breathing, so more oxygen and nutrients can reach active muscles. Hence option A is correct. Root gravitropism is a plant response, insulin is produced by pancreatic beta cells rather than the retina, and a Mimosa leaf cannot become a seed.

Related tags

AdrenalineStress ResponseEndocrine SystemControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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