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Dwarfism results from the under-secretion of which hormone during childhood?
A{'text': 'Insulin from pancreas islets'}
B{'text': 'Thyroxine from thyroid gland'}
C{'text': 'Growth hormone from pituitary'}
D{'text': 'Adrenaline from adrenal medulla'}
Answer & Solution
Correct answer: C. {'text': 'Growth hormone from pituitary'}
1. Body height is regulated mainly by **growth hormone** from the pituitary.
2. If the pituitary makes too little growth hormone in childhood, growth slows.
3. The resulting short stature is called **dwarfism**.
4. Too little insulin causes diabetes; too little thyroxine causes cretinism (a different syndrome).
_Source: Selina Concise ICSE Class 8 Biology Ch 5 "Endocrine System and Adolescence", Hormone-related disorders_
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