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Insulin secretion increases when blood sugar rises and decreases when sugar becomes normal. Which principle does this show?

Answer and explanation

Correct answer: Negative feedback

The governing concept is homeostasis maintained by negative feedback. When blood glucose rises above its normal range, the pancreas releases more insulin; insulin promotes glucose uptake and storage, bringing the level downward. Once the level approaches normal, the stimulus decreases and insulin secretion also falls. This reversal of the original change makes option A correct. Phototropism and thigmotropism are plant movements, while a reflex arc is a nervous pathway, so B, C, and D are unrelated.

Related tags

Negative FeedbackInsulinBlood SugarHomeostasisControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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