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Q119 (CDS-II/2011) Science & Technology › Biotechnology & Health › Human nutrition and health Answer Verified

Development of Goitre (enlarged thyroid gland) is mainly due to deficiency of

Result
Your answer: —  Â·  Correct: B
Explanation

Goitre, characterized by an enlarged thyroid gland and a swollen neck, is primarily caused by a deficiency of iodine in the diet [c1][t1]. Iodine is a trace element essential for the synthesis of thyroxin (thyroid hormone) [c1][t1]. When iodine levels are insufficient, the thyroid gland cannot produce adequate hormones, leading to a group of conditions known as Iodine Deficiency Disorders (IDD) [t1][t2]. To compensate for the low hormone production, the pituitary gland stimulates the thyroid, causing it to enlarge into a goitre [t10]. Globally, iodine deficiency is the most common cause of goitre, though it is less prevalent in regions where universal salt iodization is implemented [t6][t10]. Other options like iron deficiency lead to anemia [c3], while calcium and sodium are not directly linked to the development of goitre.

Sources

  1. [1] Science , class X (NCERT 2025 ed.) > Chapter 6: Control and Coordination > Do You Know? > p. 110
  2. [2] https://www.healthdirect.gov.au/iodine-deficiency
  3. [3] https://www.ncbi.nlm.nih.gov/books/NBK285556/
  4. [4] Science-Class VII . NCERT(Revised ed 2025) > Chapter 6: Adolescence: A Stage of Growth and Change > Science and Society > p. 80
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SIMILAR QUESTIONS

NDA-I · 2015 · Q51 Relevance score: -0.27

Which endocrine gland requires iodine to synthesize a particular hormone whose deficiency may eause goitre disease ?

CDS-I · 2010 · Q113 Relevance score: -4.70

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