Goitre — a noticeable swelling of the neck — results from a deficiency…

Question

Goitre — a noticeable swelling of the neck — results from a deficiency of:

Accepted Answer

A. {'text': 'Iodine in the diet'}

1. Goitre is an enlargement of the thyroid gland.
2. The thyroid needs **iodine** to manufacture thyroxine.
3. When dietary iodine is low, the gland swells trying to capture more — this is goitre.
4. Iron deficiency causes anaemia; calcium deficiency weakens bones; sodium deficiency is unrelated to goitre.
_Source: Selina Concise ICSE Class 8 Biology Ch 5 "Endocrine System and Adolescence", Hormone-related disorders_

Answer

{'text': 'Iron in the diet'}

Answer

{'text': 'Calcium in the diet'}

Answer

{'text': 'Sodium in the diet'}