Q1. Which is the main male sex hormone?
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Answer: C. Testosterone
Testosterone, produced by the testes, controls male sexual development and features.
Biology - Hormones & Glands Questions for SSC CGL (with Answers)
10 Biology - Hormones & Glands MCQs from the General Awareness section, with answers and short explanations.
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Q2. Which element is essential for the synthesis of the thyroid hormone thyroxine?
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Answer: C. Iodine
Thyroxine contains iodine, so iodine is needed for its synthesis; iodised salt prevents goitre.
Q3. The hormone insulin is secreted by the:
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Answer: B. Pancreas
Insulin is secreted by the beta cells of the islets of Langerhans in the pancreas.
Q4. Insufficient secretion of insulin leads to:
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Answer: D. Diabetes mellitus
Lack of insulin causes blood glucose to rise, leading to diabetes mellitus.
Q5. Which endocrine gland is called the 'master gland'?
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Answer: A. Pituitary gland
The pituitary gland secretes hormones that regulate several other endocrine glands, so it is called the master gland.
Q6. The thyroid gland is located in the:
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Answer: C. Neck
The thyroid gland is situated in the neck, in front of the trachea.
Q7. Which hormone lowers the level of glucose in the blood?
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Answer: D. Insulin
Insulin helps cells take up glucose and store it, lowering blood sugar.
Q8. Which hormone prepares the body for 'fight or flight' in an emergency?
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Answer: B. Adrenaline
Adrenaline from the adrenal glands raises heart rate and blood supply to muscles during emergencies.
Q9. Deficiency of growth hormone during childhood results in:
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Answer: D. Dwarfism
Too little growth hormone from the pituitary in childhood causes dwarfism.
Q10. Which gland acts as both an endocrine and an exocrine gland?
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Answer: B. Pancreas
The pancreas secretes digestive enzymes through a duct (exocrine) and hormones like insulin into blood (endocrine).
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