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In which situation should the role of thyroxine be considered first?

Answer and explanation

Correct answer: An abnormal rate of metabolism and growth

Thyroxine is an endocrine hormone that helps regulate metabolism and supports normal growth and development. Thus an unusual metabolic rate or abnormal growth is the situation in which its role should be considered first, making option A correct. Pulling the hand away from a hot object is a rapid nervous reflex. Tendril coiling is a plant growth response, and pollen-tube movement toward chemicals is chemotropism; neither primarily indicates thyroxine action.

Related tags

ThyroxineMetabolismGrowthEndocrine ControlControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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