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On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. - Biology

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Question

On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.

How is it caused?

Short Note

Solution

It is caused due to the deficiency of iodine in the diet that results in hyperthyroidism and enlargement of the thyroid gland.

shaalaa.com
Human Endocrine Glands - Thyroid Gland
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Chapter 22: Chemical Coordination and Integration - Exercises [Page 127]

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NCERT Exemplar Biology [English] Class 11
Chapter 22 Chemical Coordination and Integration
Exercises | Q 3. b. | Page 127
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