2nd Year Biology MCQs Chapter No.1 Homeostasis Quiz 1

Multiple Choice Questions 2nd Year MCQs Biology F.Sc. Part 2 Chapter No.15 HomeostasisBest MCQs for Entry Test MDCAT, ECAT & Pakistan Medical Commission Total MCQs = 50 1. The more concentrated environment is termed as: A. AnisotonicB. IsotonicC. flypotonieD. Hypertonic Show Answer Answer: Hypertonic 2. Mango plant is: (A) Mesophyte(C) Xerophyte(B). Hydrophyte(D). None of the above Show Answer Answer: Mesophyte (adsbygoogle = window.adsbygoogle || []).push({}); 3. The excretory system of Planaria called: (A) Metanephridium(B) Protonephridium(C) Nephrone(D) Nephriciium Show Answer Answer: Protonephridium 4. In urea cycle, one molecule of Amonia and one molecule of CO2 combine with one molecule of ornithine to form: (A) Urea(B) Arginine(C) Arginosuccinate(D) Citrulline Show Answer Answer: Citrulline 5. Unlike an earthworm, metanephridia in mammalian nephrone: (A) Filters blood instead of coelomic fluid(B) Function in both osmoregulation and excretion of nitrogenous wastes(C) Form urine by changing the composition of fluid inside the tubule(D) Is intimately associated with a capillary network Show Answer Answer: Filters blood instead of coelomic fluid Click for More Online Biology MCQs Tests 2nd Year Biology MCQs F.Sc. Part 2Chapter No.15 HomeostasisTotal MCQs = 50 6. Which process in the nephron is least selective? (A) Filtration(B) Transport across the epitheliurn of a collecting duct(C) Reabsorption(D) Secretion Show Answer Answer: Filtration (adsbygoogle = window.adsbygoogle || []).push({}); 7. Malpighian tubules are excretory organs found in: (A) Vertebrate(C) Insects(B) Annelids(D) Flatworms Show Answer Answer: Insects 8. Amonia is secreted by most: (A) Adult amphibians(C) Bony fishes(B) Organism that produce eggs(D) Insect Show Answer Answer: Bony fishes (adsbygoogle = window.adsbygoogle || []).push({}); 9. The vertebrate liver functions in all the following regulatory processes except: (A) Detoxification of harmful chemicals(B) Energy reserves in the formation of glycogen(C) Production of Nitrogenous wastes(D) senor elation by variable excretion of salts Show Answer Answer: senor elation by variable excretion of salts 10. Non-shivering thermogenesis is: (A) A hormone triggers the heat production by increasing metabolic rate(B) A behavioral adaptation for absorbing heat in ectotherms(C) Muscle contraction by movements as in winter months(D) A heat producing method of large fishes Show Answer Answer: A hormone triggers the heat production by increasing metabolic rate Click for More Online Biology MCQs Tests 2nd Year Biology MCQs F.Sc. Part 2Chapter No.15 HomeostasisTotal MCQs = 50 11. Urea can be eliminated with quantity of water as compared to ammonia: (A) I/10(C) 1 /5(B) 1.20(D) 1.50 Show Answer Answer: 1 / 10 12. Oxalates are present in: (A) Meat(C) Green vegetable only(B) Tomatoes(D) Green vegetable and tomatoes Show Answer Answer: Green vegetable and tomatoes (adsbygoogle = window.adsbygoogle || []).push({}); 13. Movement of ground squirrel to burrows in midday heat is an: (A) Physiological adaptation(B) Structural adaptation(C) Behavioral adaptation(D) Morphological & physiological adaptations Show Answer Answer: Behavioral adaptation 14. Normal body temperature range between: (A) 36.1 oC - 3 7.8 oC(B) 36.0 oC - 38.8 oC(C) 36.7 oC - 37.8 oC(D) 37.1 oC – 38.6 oC Show Answer Answer: 36.1 oC - 37.8 oC 15. Humming bird belongs to a category called: (A) Heterothem(B) Poikilothenns(C) Ectothem(D) Endotherrn Show Answer Answer: Heterothem (adsbygoogle = window.adsbygoogle || []).push({}); Click for More Online Biology MCQs Tests 2nd Year Biology MCQs F.Sc. Part 2Chapter No.15 HomeostasisTotal MCQs = 50 16. Vasodilation: (A) Nucleic acid(B) Increase the blood supply to the skin(C) Protein(D) ADH Show Answer Answer: Increase the blood supply to the skin 17. Nitrogenous base: (A) Ectotherm(C) Nucleic acid(B) Protein(D) ADH Show Answer Answer: Nucleic acid 18. Reptile: (A) Protein(B) Ectotherm(C) Nucleic acid(D) ADH Show Answer Answer: Ectotherm (adsbygoogle = window.adsbygoogle || []).push({}); 19. Collecting duct: (A) ADH(B) Protein(C) Ectotherm(D) Increase the Blood Supply to Skin Show Answer Answer: ADH 20. Dialyzer: (A) 15%(B) Kidney machine(C) Adrenal cortex(D) Presence of sweat gland Show Answer Answer: Kidney machine Click for More Online Biology MCQs Tests MCQs Biology F.Sc. Part 2 (2nd Year)Chapter No.15 HomeoStasis 21. Stone of uric acid: (A) Adrenal cortexj.(B) I 5%(C) Kidney machine(D) 10% Show Answer Answer: 10% 22. Structural adaptation: (A) Presence of sweat gland(B) Liver(C) Kidney machine(D) Adrenal cortex Show Answer Answer: Presence of sweat gland (adsbygoogle = window.adsbygoogle || []).push({}); 23. Aldosterone: (A) Presence of sweat gland(B) Adrenal cortex(C) Liver(D) Kidney machine Show Answer Answer: Adrenal cortex 24. Nephron: (A) Passive loss of water from gills(B) Kidney(C) Large amount of hypotonic contain little salt(D) Body fluid isotonic to external environment Show Answer Answer: Kidney 25. Fresh water fish: (A) Body fluid isotonic to external environment(B) Passive loss of water from gills(C) Large amount of hypotonic urine contain little salt(D) Kidney Show Answer Answer: Large amount of hypotonic urine contain little salt (adsbygoogle = window.adsbygoogle || []).push({}); Click for More Online Biology MCQs Tests 2nd Year Biology MCQs F.Sc. Part 2Chapter No.15 HomeostasisTotal MCQs = 50 26. Bile: (A) Liver(B) Body fluid isotonic to external environment(C) Kidney(D) Large amount of hypotonic urine contain little salt Show Answer Answer: Liver 27. Osmoconformers? (A) Body fluid isotonic to external environment(B) Passive loss of water from gills(C) Large amount of hypotonic urine contain little salt(D) Kidney Show Answer Answer: Body fluid isotonic to external environment 28. Thermo receptors: (A) CockroachB) Hypothalamus(D) Bowman capsule(C) Loop of Henle Show Answer Answer: Hypothalamus (adsbygoogle = window.adsbygoogle || []).push({}); 29. Uric acid: (A) Cockroach(C) Bowman capsule(B) Loop of Hen] e(D) Hypothalamus Show Answer Answer: Cockroach 30. Lithotripsy: (A) Cockroach(C) Loop of Henle(B) Hypothalamus(D) Non-surgical removal of gall bladder stone Show Answer Answer: Non-surgical removal of gall bladder stone Click for More Online Biology MCQs Tests MCQs Biology F.Sc. Part 2 (2nd Year)Chapter No.15 HomeoStasis 31. Posterior lobe: (A) Active transport(C) Passive transport(B) Sensor(D) Ant diuretic hormone Show Answer Answer: Ant diuretic hormone 32. Ascending loop of Henle: (A) Passive transport(C) Sensor(B) Active transport of Na+ ions(D) Native to cold region Show Answer Answer: Active transport of Na+ ions (adsbygoogle = window.adsbygoogle || []).push({}); 33. Oak: (A) Passive transport(C) Sensor(B) Active transport(D) Native to cold region Show Answer Answer: Native to cold region 34. Receptors: (A) Sensor(C) Antidiuretic Hormone(B) Native to cold region(D) Passive transport Show Answer Answer: Sensor 35. Homeostasis is the process of maintaining a constant environment despite conditions: (A) External internal(B) Internal external(C) Both (A) and (B)(D) None of these Show Answer Answer: Internal external (adsbygoogle = window.adsbygoogle || []).push({}); Click for More Online Biology MCQs Tests 2nd Year Biology MCQs F.Sc. Part 2Chapter No.15 HomeostasisTotal MCQs = 50 36. Homeostasis is based on: (A) Thermoregulation only(C) Feed back mechanism(B) Catabolism(D) Anabolism Show Answer Answer: Feed back mechanism 37. Two major control centers for homeostasis are: (A) Exocrine and endocrine glandsB) Apocrine and Heterocrine glands(C) Receptors and effectors(D) Brain and endocrine glands Show Answer Answer: Brain and endocrine glands 38. Which of the following activity is regulated by homeostasis? (A) Temperature(B) Water balance(C) Blood sugar level(D) All (A) (B) and (C) Show Answer Answer: All (A) (B) and (C) (adsbygoogle = window.adsbygoogle || []).push({}); 39. What should be the Regulator in this chart? (A) Medulla oblongata(B) Pituitary gland(C) Spinal cord(D) Hypothalamus Show Answer Answer: Hypothalamus 40. What are the components of feed back mechanism? (A) Receptors, insulators, effectors(B) Receptors, suppressors, effectors(C) Receptors, regulators, effectors(D) Receptors, depressors, effectors Show Answer Answer: Receptors, regulators, effectors Click for More Online Biology MCQs Tests MCQs Biology F.Sc. Part 2 (2nd Year)Chapter No.15 HomeoStasis 41. A cell is placed in a solution and swells. This solution is: (A) Isotonic to cell(B) Hypertonic to cell(C) Hypotonic to cell(D) None of these Show Answer Answer: Hypotonic to cell 42. In an isotonic there would be: (A) No net movement of water(B) Net movement of water into the cell(C) Net movement of water out of the cell(D) Bursting of the cell Show Answer Answer: No net movement of water (adsbygoogle = window.adsbygoogle || []).push({}); 43. A cell whose internal salt concentration is 0.3 per liter is placed in a solution having salt concentration 0.5 per liter. The solution is (A) Isotonic to the cell(C) Hypertonic to cell(B) Hypotonic to the cell(D) None of these Show Answer Answer: Hypertonic to cell 44. Osmosis is defined as: (A) Flow of solvent through Semi-permeable Membrane from higher to less concentrated solution(B) Flow of solvent through semi-permeable membrane from less to higher concentrated solution(C) Flow of a solute from a semi-permeable membrane(D) Flow of water without membrane Show Answer Answer: Flow of solvent through semi-permeable membrane from less to higher concentrated solution 45. Plasmolysis of a human red blood cell would occur if the cell were: (A) In an isotonic solution(B) In a hypertonic solution(C) In a hypotonic solution(D) None of the above Show Answer Answer: In a hypertonic solution (adsbygoogle = window.adsbygoogle || []).push({}); Click for More Online Biology MCQs Tests 2nd Year Biology MCQs F.Sc. Part 2Chapter No.15 HomeostasisTotal MCQs = 50 46. When an animal cell is placed in a hypotonic environment, it will: (A) Undergo cytolysis(B) Undergo plasmolysis(C) Be at equilibrium(D) Its furor pressure decreases Show Answer Answer: Undergo cytolysis 47. The contractile vacuole of a paramecium should be active when the paramecium is in: (A) An isotonic environment(B) A hypotonic environment(C) A hypertonic environment(D) Any environment Show Answer Answer: A hypotonic environment 48. The tendency of a solution to take up water when separated from pure water by a selectively permeable membrane is called: (A) Osmotic pressure(B) Turgor pressure(C) Diffusion pressure deficit(D) Water potential Show Answer Answer: Osmotic pressure (adsbygoogle = window.adsbygoogle || []).push({}); 49. Xerophytes have: (A) Deep roots for water uptake(B) Succulent stems for storage of water(C) Few stomata to limit water loss(D) All Show Answer Answer: ALL 50. A plant without cuticle in leaves and stern, having increased number of stomata, partially or completely submerged in water is: (A) Mesophyte(B) Hydrophyte(C) Both (A) and (B)(D) Halophyte Show Answer Answer: Hydrophyte Click for More Online Biology MCQs Tests (adsbygoogle = window.adsbygoogle || []).push({}); We also available on Social Mediaat facebook( fb )https://facebook.com/786Timespkhttps://facebook.com/786TimesnewsAlso available onTwitter ID: https://twitter.com/786times (adsbygoogle = window.adsbygoogle || []).push({});