Class 10 Biology Chapter 11 MCQs – Homeostasis (FBISE)

Description: Practice Class 10 Biology Chapter 11 MCQs on Homeostasis. These important FBISE Biology MCQs include conceptual, knowledge-based, and exam-oriented questions for board preparation.

1. The maintenance of internal balance in the body is called:

A) Coordination
B) Homeostasis
C) Respiration
D) Circulation

2. Which organ mainly regulates water balance in humans?

A) Heart
B) Lungs
C) Kidneys
D) Liver

3. Functional unit of kidney is called:

A) Nephron
B) Neuron
C) Alveolus
D) Villus

4. Excess glucose in blood may indicate:

A) Asthma
B) Pneumonia
C) Hepatitis
D) Diabetes mellitus

5. Human skin helps in temperature regulation by:

A) Digestion
B) Sweating
C) Filtration
D) Respiration

6. Which hormone lowers blood glucose level?

A) Insulin
B) Adrenaline
C) Thyroxine
D) Estrogen

7. The process of removing metabolic wastes from body is called:

A) Respiration
B) Digestion
C) Excretion
D) Circulation

8. Which waste product is mainly excreted by kidneys?

A) Oxygen
B) Urea
C) Glucose
D) Protein

9. The tube carrying urine from kidney to urinary bladder is:

A) Urethra
B) Nephron
C) Renal vein
D) Ureter

10. Which part of nephron filters blood?

A) Glomerulus
B) Collecting duct
C) Loop of Henle
D) Ureter

11. Which condition results from insulin deficiency?

A) Asthma
B) Hypertension
C) Diabetes mellitus
D) Tuberculosis

12. The outer region of kidney is called:

A) Pelvis
B) Cortex
C) Medulla
D) Hilus

13. Which organ removes excess salts and water through sweat?

A) Skin
B) Liver
C) Heart
D) Pancreas

14. Dialysis is used when:

A) Lungs fail
B) Liver fails
C) Heart fails
D) Kidneys fail

15. The hormone ADH mainly controls:

A) Heartbeat
B) Water balance
C) Digestion
D) Respiration

16. Which structure temporarily stores urine?

A) Kidney
B) Ureter
C) Urinary bladder
D) Urethra

17. Which process selectively reabsorbs useful substances from filtrate?

A) Tubular reabsorption
B) Ultrafiltration
C) Diffusion
D) Ventilation

18. Which blood vessel brings impure blood to kidneys?

A) Renal vein
B) Pulmonary artery
C) Aorta
D) Renal artery

19. The main nitrogenous waste in humans is:

A) Ammonia
B) Urea
C) Uric acid
D) Carbon dioxide

20. Increased sweating helps the body to:

A) Lower body temperature
B) Increase blood pressure
C) Store salts
D) Produce glucose

21. Which part of nephron is responsible for reabsorption of water?

A) Glomerulus
B) Bowman’s capsule
C) Tubule
D) Renal pelvis

22. Kidney stones are usually formed due to accumulation of:

A) Sugars
B) Mineral salts
C) Proteins
D) Hormones

23. Which organ controls secretion of ADH?

A) Thyroid gland
B) Pancreas
C) Adrenal gland
D) Pituitary gland

24. Which component is normally absent in healthy urine?

A) Glucose
B) Water
C) Urea
D) Salts

25. The process by which kidneys filter blood under pressure is:

A) Diffusion
B) Osmosis
C) Ultrafiltration
D) Active transport

26. Which hormone increases blood glucose level?

A) Insulin
B) Glucagon
C) ADH
D) Estrogen

27. Human kidneys are located in the:

A) Thoracic cavity
B) Cranial cavity
C) Pelvic cavity
D) Abdominal cavity

28. Excessive urination is a common symptom of:

A) Diabetes mellitus
B) Asthma
C) Bronchitis
D) Pneumonia

29. Which part of brain regulates body temperature?

A) Cerebellum
B) Medulla
C) Hypothalamus
D) Cerebrum

30. Which process conserves water in desert animals?

A) Increased sweating
B) Maximum water reabsorption
C) Frequent urination
D) Increased respiration

31. The tube that carries urine out of the body is:

A) Urethra
B) Ureter
C) Nephron
D) Renal artery

32. Which organ helps in removal of carbon dioxide and water vapours?

A) Kidney
B) Skin
C) Pancreas
D) Lungs

33. Failure of homeostasis may lead to:

A) Better health
B) Disease
C) Increased growth
D) Increased immunity

34. Which structure collects urine from nephrons?

A) Glomerulus
B) Bowman’s capsule
C) Collecting duct
D) Cortex

35. Which gland secretes insulin?

A) Pancreas
B) Thyroid
C) Pituitary
D) Adrenal

36. The inward folding of Bowman’s capsule forms:

A) Collecting duct
B) Loop of Henle
C) Renal pelvis
D) Glomerulus

37. Which condition is caused by reduced secretion of insulin?

A) Hypertension
B) Diabetes mellitus
C) Asthma
D) Tuberculosis

38. The main purpose of excretion is to:

A) Produce energy
B) Digest food
C) Remove toxic wastes
D) Absorb oxygen

39. Which process increases heat loss from the body?

A) Vasodilation
B) Vasoconstriction
C) Filtration
D) Ultrafiltration

40. Which organ converts ammonia into urea?

A) Kidney
B) Pancreas
C) Heart
D) Liver

41. Which of the following is an example of osmoregulation?

A) Digestion of proteins
B) Regulation of water and salts
C) Pumping of blood
D) Formation of hormones

42. Which condition may occur due to severe dehydration?

A) Low blood pressure
B) Increased urine output
C) High glucose level
D) Increased sweating

43. Which substance is reabsorbed completely in a healthy person?

A) Urea
B) Salts
C) Glucose
D) Ammonia

44. Dialysis machine acts as an artificial:

A) Heart
B) Kidney
C) Lung
D) Liver

45. Which blood vessel carries filtered blood away from kidneys?

A) Renal artery
B) Aorta
C) Pulmonary vein
D) Renal vein

46. Sweating becomes more active during:

A) Hot weather
B) Cold weather
C) Sleeping
D) Starvation

47. Which part of nephron is mainly involved in concentration of urine?

A) Bowman’s capsule
B) Glomerulus
C) Loop of Henle
D) Renal pelvis

48. Which organ system mainly maintains homeostasis in humans?

A) Digestive system
B) Excretory system
C) Skeletal system
D) Reproductive system

49. Which hormone deficiency causes diabetes insipidus?

A) ADH
B) Insulin
C) Thyroxine
D) Glucagon

50. Homeostasis helps organisms to survive in:

A) Stable conditions only
B) Aquatic habitats only
C) Desert habitats only
D) Changing environments

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