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easyQ. No. 16199

Iodine deficiency most commonly causes enlargement of which gland?

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This question tests a core concept of human nutrition: Iodine deficiency reduces thyroid hormone production and can stimulate enlargement of the thyroid gland, producing goitre. Understanding this relationship helps explain how the body obtains energy, builds tissues, maintains immunity and prevents deficiency disease. The correct answer is Thyroid gland. Students should connect the nutrient with its principal function, common dietary sources and characteristic deficiency or excess.

APituitary gland
BAdrenal gland
CThyroid gland
DPancreas
Correct Answer: Thyroid glandYour Answer: C

Explanation

Correct answer: Thyroid gland. Iodine deficiency reduces thyroid hormone production and can stimulate enlargement of the thyroid gland, producing goitre. Adequate iodine is especially important during pregnancy and childhood for normal brain and nervous-system development. The pituitary, adrenal gland and pancreas have different hormonal functions and do not form nutritional iodine-deficiency goitre. The distractors are related to nutrition, but each describes a different nutrient, function, energy value or deficiency condition.

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Nutrition FAQs

Common questions and clear answers for this topic.

What nutrients does the human body need?

The body needs carbohydrates, proteins, fats, vitamins, minerals and water. Dietary fibre also supports digestive and metabolic health. A balanced diet supplies these components in amounts suited to a person’s age, activity and physiological needs.

Which nutrition facts are commonly tested in competitive exams?

Competitive exams commonly test nutrient functions and sources, energy values, vitamin and mineral deficiencies, fat-soluble and water-soluble vitamins, balanced diets, and protein-energy malnutrition such as kwashiorkor and marasmus.

How should nutrient-deficiency questions be revised?

Learn each nutrient as a four-part link: its major dietary sources, principal function, characteristic deficiency and important excess effect. This method makes similar options easier to distinguish.