(a) Where is thyroid gland situated in our body?
(a) Where is thyroid gland situated in our body?
Official answer
Hypothyroidism can be controlled by ensuring sufficient intake of iodine in our diet, primarily through the use of iodised salt. Iodine is essential for the thyroid gland to synthesise thyroxin hormone, which regulates the metabolism of carbohydrates, proteins, and fats in the body to provide the best balance for growth.
Marking scheme
- 1.Mentioning the intake of iodised salt / iodine in diet: 0.5 marks
- 2.Explaining that iodine is essential for the synthesis of thyroxin hormone by the thyroid gland: 0.5 marks
Hint
Think about the mineral required by the thyroid gland to synthesise thyroxin hormone.
Quick oral answer
We can control hypothyroidism by consuming iodised salt in our diet, as iodine is necessary for the thyroid gland to make thyroxin hormone.
Common mistakes
- 1.Confusing hypothyroidism with diabetes and suggesting insulin intake.
- 2.Not mentioning the role of iodine in thyroxin synthesis.
Analysis and explanation
The thyroid gland requires iodine to produce thyroxin. A deficiency of iodine in the diet leads to a deficiency of thyroxin (hypothyroidism), which can cause conditions like goitre (characterized by a swollen neck). Therefore, consuming iodised salt is recommended to provide the necessary iodine for normal thyroid function.
Interesting facts
Iodised salt was introduced as a public health measure to prevent goitre and cretinism, which were highly prevalent in mountainous regions where soil and water are deficient in iodine.
Question details
Q4 of 45 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2020
- Section
- Section A
- Marks
- 1
- Chapter
- Control and Coordination
- Topic
- Hormones in Animals
- Bloom's level
- Applying
- Syllabus topic
- Animal hormones: endocrine glands, thyroxin, iodine
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2020?
This question carries 1 mark in the CBSE Class 10 Science 2020 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Control and Coordination" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Hormones in Animals" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2020 paper?
This question appears in Section A in the CBSE Class 10 Science 2020 paper.