Hormones & Plant Movement MCQ Quiz – Part 2
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This Hormones & Plant Movement MCQ Quiz helps aspirants revise important concepts related to plant hormones and different types of plant movements, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
GK Series – Biology – Hormones & Plant Movement MCQ Quiz |
|
| Subject | Biology |
| Chapter | Hormones & Plant Movement |
| Part | 2 |
| Questions | 25 |
Who Should Attempt This Hormones & Plant Movement MCQ Quiz?
This Hormones & Plant Movement MCQ Quiz is useful for aspirants preparing for SSC, Railways, Banking, Defence, and other government job exams, where basic biology questions are commonly asked in the General Knowledge section.
Topics Covered in This Hormones & Plant Movement MCQ Quiz
This quiz includes MCQs based on important topics such as plant hormones (auxin, gibberellin, cytokinin, ethylene, and abscisic acid), tropic movements, nastic movements, phototropism, geotropism, and other fundamental concepts related to plant growth and movement.
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Question 1 of 25
1. Question
Serotonin is produced from which amino acid?
Correct
➤ Serotonin is synthesized from the amino acid tryptophan.
➤ It is later converted into melatonin during night.Incorrect
➤ Serotonin is synthesized from the amino acid tryptophan.
➤ It is later converted into melatonin during night. -
Question 2 of 25
2. Question
The thymus gland is located
Correct
➤ The thymus gland is located behind the sternum in the upper chest.
➤ It plays an important role in the immune system.Incorrect
➤ The thymus gland is located behind the sternum in the upper chest.
➤ It plays an important role in the immune system. -
Question 3 of 25
3. Question
The thymus gland is mainly responsible for the maturation of
Correct
➤ The thymus gland helps in the maturation of T-lymphocytes (T-cells).
➤ These cells are essential for immune defense against infections.Incorrect
➤ The thymus gland helps in the maturation of T-lymphocytes (T-cells).
➤ These cells are essential for immune defense against infections. -
Question 4 of 25
4. Question
The thymus gland is most active during
Correct
➤ The thymus gland is most active during childhood.
➤ It gradually shrinks after puberty.Incorrect
➤ The thymus gland is most active during childhood.
➤ It gradually shrinks after puberty. -
Question 5 of 25
5. Question
Which system of the body is supported by the thymus gland?
Correct
➤ The thymus gland supports the immune system.
➤ It helps develop T-cells that protect the body from infections.Incorrect
➤ The thymus gland supports the immune system.
➤ It helps develop T-cells that protect the body from infections. -
Question 6 of 25
6. Question
The thyroid gland is located in the
Correct
➤ The thyroid gland is a butterfly-shaped gland located in the neck.
➤ It plays a key role in regulating metabolism.Incorrect
➤ The thyroid gland is a butterfly-shaped gland located in the neck.
➤ It plays a key role in regulating metabolism. -
Question 7 of 25
7. Question
Which hormone is mainly secreted by the thyroid gland?
Correct
➤ The thyroid gland secretes thyroxine (T4).
➤ It helps regulate metabolism and energy production.Incorrect
➤ The thyroid gland secretes thyroxine (T4).
➤ It helps regulate metabolism and energy production. -
Question 8 of 25
8. Question
Which mineral is essential for the production of thyroxine?
Correct
➤ Iodine is essential for the synthesis of thyroxine hormone.
➤ It is obtained from dietary sources like iodized salt and seafood.Incorrect
➤ Iodine is essential for the synthesis of thyroxine hormone.
➤ It is obtained from dietary sources like iodized salt and seafood. -
Question 9 of 25
9. Question
Which hormones are produced by the thyroid gland?
Correct
➤ The thyroid gland produces T3 (triiodothyronine) and T4 (thyroxine).
➤ These hormones regulate metabolism and energy balance.Incorrect
➤ The thyroid gland produces T3 (triiodothyronine) and T4 (thyroxine).
➤ These hormones regulate metabolism and energy balance. -
Question 10 of 25
10. Question
Which hormone secreted by the thyroid gland helps regulate calcium levels in blood?
Correct
➤ Calcitonin helps regulate calcium levels in blood.
➤ It reduces blood calcium levels.Incorrect
➤ Calcitonin helps regulate calcium levels in blood.
➤ It reduces blood calcium levels. -
Question 11 of 25
11. Question
Hypothyroidism refers to
Correct
➤ Hypothyroidism occurs when the thyroid gland produces insufficient hormone.
➤ It leads to slowed metabolism.Incorrect
➤ Hypothyroidism occurs when the thyroid gland produces insufficient hormone.
➤ It leads to slowed metabolism. -
Question 12 of 25
12. Question
Hyperthyroidism refers to
Correct
➤ Hyperthyroidism occurs when the thyroid gland produces excessive hormone.
➤ It increases metabolism and heart rate.Incorrect
➤ Hyperthyroidism occurs when the thyroid gland produces excessive hormone.
➤ It increases metabolism and heart rate. -
Question 13 of 25
13. Question
Which hormone helps maintain homeostasis by regulating metabolism and temperature?
Correct
➤ Thyroxine maintains metabolic balance in the body.
➤ It helps regulate body temperature and energy production.Incorrect
➤ Thyroxine maintains metabolic balance in the body.
➤ It helps regulate body temperature and energy production. -
Question 14 of 25
14. Question
The parathyroid glands are located
Correct
➤ The parathyroid glands are four small glands located behind the thyroid gland.
➤ They regulate calcium levels in blood and bones.Incorrect
➤ The parathyroid glands are four small glands located behind the thyroid gland.
➤ They regulate calcium levels in blood and bones. -
Question 15 of 25
15. Question
Which hormone is secreted by the parathyroid gland?
Correct
➤ Parathyroid hormone (PTH) is secreted by the parathyroid gland.
➤ It helps increase calcium levels in the blood.Incorrect
➤ Parathyroid hormone (PTH) is secreted by the parathyroid gland.
➤ It helps increase calcium levels in the blood. -
Question 16 of 25
16. Question
The main function of parathyroid hormone is to
Correct
➤ PTH regulates calcium concentration in blood and bones.
➤ It maintains calcium balance in the body.Incorrect
➤ PTH regulates calcium concentration in blood and bones.
➤ It maintains calcium balance in the body. -
Question 17 of 25
17. Question
The adrenal glands are located
Correct
➤ Adrenal glands are cap-like structures located above both kidneys.
➤ They produce hormones related to stress response.Incorrect
➤ Adrenal glands are cap-like structures located above both kidneys.
➤ They produce hormones related to stress response. -
Question 18 of 25
18. Question
Which hormone is known as the “fight or flight” hormone?
Correct
➤ Adrenaline is known as the “fight or flight” hormone.
➤ It prepares the body to respond to emergency situations.Incorrect
➤ Adrenaline is known as the “fight or flight” hormone.
➤ It prepares the body to respond to emergency situations. -
Question 19 of 25
19. Question
Adrenaline mainly causes
Correct
➤ Adrenaline increases heart rate and blood pressure.
➤ It also increases blood glucose levels for instant energy.Incorrect
➤ Adrenaline increases heart rate and blood pressure.
➤ It also increases blood glucose levels for instant energy. -
Question 20 of 25
20. Question
Which hormone is known as the stress hormone?
Correct
➤ Cortisol is known as the stress hormone.
➤ It helps the body respond to stress and maintain metabolism.Incorrect
➤ Cortisol is known as the stress hormone.
➤ It helps the body respond to stress and maintain metabolism. -
Question 21 of 25
21. Question
Which hormone regulates blood pressure and salt balance?
Correct
➤ Aldosterone regulates sodium and potassium balance.
➤ It helps maintain blood pressure.Incorrect
➤ Aldosterone regulates sodium and potassium balance.
➤ It helps maintain blood pressure. -
Question 22 of 25
22. Question
Which hormone increases blood glucose during emergencies?
Correct
➤ Adrenaline increases blood glucose levels during emergencies.
➤ It provides quick energy for the body.Incorrect
➤ Adrenaline increases blood glucose levels during emergencies.
➤ It provides quick energy for the body. -
Question 23 of 25
23. Question
Which disease is caused by deficiency of iodine?
Correct
➤ Goitre is caused by iodine deficiency.
➤ It leads to enlargement of the thyroid gland.Incorrect
➤ Goitre is caused by iodine deficiency.
➤ It leads to enlargement of the thyroid gland. -
Question 24 of 25
24. Question
Which hormone mainly regulates the body’s metabolic rate?
Correct
➤ Thyroxine regulates the body’s metabolic rate.
➤ It controls energy production and body temperature.Incorrect
➤ Thyroxine regulates the body’s metabolic rate.
➤ It controls energy production and body temperature. -
Question 25 of 25
25. Question
Deficiency of adrenal hormones causes
Correct
➤ Addison’s disease occurs when adrenal glands do not produce enough cortisol and aldosterone.
➤ It is a rare chronic disorder.Incorrect
➤ Addison’s disease occurs when adrenal glands do not produce enough cortisol and aldosterone.
➤ It is a rare chronic disorder.