NEET Biology Multiple Choice Questions – Homeostasis and Osmoregulation

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NEET Biology Homeostasis and Osmoregulation Multiple Choice Questions

Question 1. Excretion refers to :

  1. Removal of metabolic wastes and toxic products from the body
  2. Removal of non-nitrogenous wastes from the body
  3. Removal of synthetic products
  4. None of the above.

Answer: 1. Removal of metabolic wastes and toxic products from the body

Question 2. Kidney of amniotes belongs to the following type :

  1. Pronephros
  2. Mesonephros
  3. Metanephros
  4. None of these.

Answer: 3. metanephros

Question 3. About how many nephrons are present in each kidney of a human?

  1. 1000,000
  2. 2000
  3. 1000
  4. 16.

Answer: 1. 1000,000

Question 4. Vertebrate kidney and contractile vacuole of protozoan resemble each other in :

  1. Excretion of minerals
  2. Excretion of nitrogenous wastes
  3. Excretion of excess water content and wastes
  4. Excretion of glucose.

Answer: 3. Excretion of excess water content and wastes

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Question 5. The cavity of the kidney which leads into the ureter is called :

  1. Renal pelvis
  2. Renal tubule
  3. Bowman’s capsule
  4. Neck.

Answer: 1. Renal pelvis

Homeostasis MCQs For NEET

Question 6. The glomerulus is responsible for :

  1. Secretion
  2. Reabsorption
  3. Filtration
  4. Osmoregulation.

Answer: 3. filtration

Question 7. A fish excretes nitrogen in the form of:

  1. Amino acids
  2. Ammonium ions
  3. Uric acid
  4. All of the above.

Answer: 2. Ammonium ions

Question 8. Capillaries of glomeruli are :

  1. Entirely venous
  2. Entirely arterial
  3. Venous and arterial
  4. None of the above.

Answer: 2. entirely arterial

Question 9. The kind of epithelial cells that form a lining of the neck of the tubule are:

  1. Pyramidal
  2. Columnar
  3. Ciliated cuboidal
  4. Ciliated columnar.

Answer: 3. Ciliated cuboidal

Homeostasis MCQs For NEET

Question 10. What kind of epithelial cells form the lining of the body of renal tubules?

  1. Pyramidal
  2. Columnar
  3. Cuboidal
  4. Ciliated columnar.

Answer: 3. Cuboidal

Question 11. The separation of amino acid into the amino group and the carboxylic group is called :

  1. Deamination
  2. Defecation
  3. Excretion
  4. Transamination.

Answer: 1. Deamination

Question 12. Uriniferous tubules are concerned with the formation of:

  1. Amino acids
  2. Glucose
  3. Urine
  4. Co-enzyme

Answer: 3. urine

Question 13. Uriniferous tubules are found :

  1. Only in man
  2. In all mammals
  3. In all vertebrates
  4. In all chordates and some lower animals.

Answer: 3. In all vertebrates

Question 14. The maximum amount of urea is present in :

  1. Renal artery
  2. Renal vein
  3. Hepatic artery
  4. Hepatic vein.

Answer: 4. Hepatic vein

Question 15. A condition which fails the kidney is known as:

  1. Uraemia
  2. Anuria
  3. Diarrhoea
  4. Haematuria.

Answer: 2. Anuria

Question 16. The function of the kidney is to :

  1. Form urine
  2. Maintain a constant fluid environment in which cells are bathed
  3. Remove toxic substances from the body and expel extra fluid
  4. All the above.

Answer: 4. All the above.

Question 17. Materials from tubule enter cells against a gradient because of:

  1. Active transport
  2. Passive transport
  3. Turgor pressure
  4. Imbibition.

Answer: 1. Active transport

Homeostasis MCQs For NEET

Question 18. The yellow colour of urine is due to :

  1. Bile pigment
  2. Picric acid
  3. Vitamin B
  4. Urochrome.

Answer: 4. Urochrome

Question 19. Urine is formed by the process of:

  1. Ultrafiltration, plasmolysis and absorption
  2. Ultrafiltration, secretion and absorption
  3. Ultrafiltration, reabsorption and secretion
  4. Ultrafiltration, secretion and osmosis.

Answer: 3. Ultrafiltration, reabsorption and secretion

Question 20. In the glomerular filtrate, all the constituents of blood except proteins and cells are present. The process involved is :

  1. Phagocytosis
  2. Ultrafiltration
  3. Reabsorption
  4. Secretion.

Answer: 2. Ultrafiltration

Question 21. The osmoregulatory tissue in all animals is :

  1. Connective.
  2. Muscular
  3. Nervous
  4. Epithelial.

Answer: 4. Epithelial

Question 22. The vitamin that is excreted by urine in higher vertebrates is :

  1. vitamin A
  2. vitamin E
  3. vitamin C
  4. vitamin K.

Answer: 3. vitamin C

Question 23. The pressure exerted by the glomerular afferent arteriole is:

  1. +95 mm Hg
  2. +70 mm Hg
  3. +75 mm Hg
  4. +80 mm Hg.

Answer: 3. +75 mm Hg

Homeostasis MCQs For NEET

Question 24. The difference between glomerular filtrate and blood plasma is:

  1. First is concentrated and the second is dilute
  2. The first is white and the second is yellow
  3. Difference of potassium
  4. Protein.

Answer: 4. Protein.

Question 25. The end products of fat and carbohydrate metabolism are excreted.

  1. Kidney
  2. Liver
  3. Lungs
  4. Skin.

Answer: 3. Lungs

Question 26. A person has taken a large amount of ‘meal which contains high muscle protein. His urine will eliminate more amount of :

  1. Urea
  2. Uric acid
  3. Glucose
  4. Glycogen.

Answer: 2. Uric acid

Question 27. Which one of the following increases glomerular pressure?

  1. Renin
  2. Aldosterone
  3. Angiotensin
  4. ADH.

Answer: 3. Angiotensin

Question 28. The urinary bladder of a frog performs the function of :

  1. Ultra-filtration
  2. Storage of urine
  3. Secretion
  4. Selective reabsorption.

Answer: 2. Storage of urine

Osmoregulation MCQs NEET

Question 29. When the kidney is no longer held in place securely the stage is called the :

  1. Nephritis
  2. Nephrosis
  3. Ptosis
  4. Diuresis.

Answer: 3. Ptosis

Question 30. In which of the following does the gut expel excretory waste along with faeces?

  1. Human being
  2. Dog
  3. Sheep
  4. Earthworm.

Answer: 4. Earthworm

Question 31. The glomerulus is a network of:

  1. 5 parallel capillaries
  2. 50 parallel capillaries
  3. 500 parallel capillaries
  4. 5000 parallel capillaries
  5. more than 5000 parallel capillaries.

Answer: 2. 50 parallel capillaries

Question 32. What does glomerular filtrate consist of ?

  1. Water and plasma proteins
  2. Water and urea
  3. Water, urea, glucose and inorganic salts
  4. Water, urea, inorganic salts, lipids.

Answer: 3. Water, urea, glucose and inorganic salts

Question 33. In the kidney the high capillary bed is found :

  1. In Bowman’s capsule
  2. Around anterior tubules
  3. Around a loop of Henle
  4. Not found.

Answer: 1. In Bowman’s capsule

Question 34. In Bright disease (Nephritis) :

  1. The amount of urea in the blood increases
  2. Blood comes out along with urine
  3. Kidney stones are developed
  4. All of the above.

Answer: 2. blood comes out along with urine

Osmoregulation MCQs NEET

Question 35. The pack rat, a rodent, often goes for long periods without drinking, eats leaves of juicy plants and moves about in the open only in the evening and at night. From these habits, you can guess that it lives in :

  1. Desert areas
  2. The Arctic tundra
  3. The woodlands of the eastern U.S.
  4. The water.

Answer: 1. Desert areas

Question 36. The main nitrogenous waste substance excreted by the pack rat will probably be :

  1. Ammonia
  2. Urea
  3. Uric acid
  4. None of these.

Answer: 2. Urea

Question 37. An advantage of excreting nitrogenous wastes in the form of uric acid is that :

  1. Uric acid can be excreted in almost solid form
  2. The formation of uric acid requires a great deal of energy
  3. Uric acid is the first metabolic breakdown product of acids
  4. Uric acid may be excreted through the lungs.

Answer: 1. Uric acid can be excreted in almost solid form

Question 38. If excess water passes out from the tissues without being restored by the kidneys, the cells would :

  1. Extract water from the plasma
  2. Shrivel and die
  3. Would not be affected
  4. Burst open and die.

Answer: 2 . Shrivel and die

Question 39. The main excretory structure in houseflies is the.

  1. Malpighian tubules
  2. Flame cell
  3. Nephron
  4. Nephridium.

Answer: 1. Malpighian tubules

Osmoregulation MCQs NEET

Question 40. Salmon have gills that are more permeable to water than to salts. Salmon hatch in freshwater streams, and then migrate to the ocean. Once they reach the ocean you would expect the rate of uptake of water into their body through the gills to :

  1. Increase
  2. Decrease
  3. Remain the same
  4. First increases then decreases.

Answer: 2. Decrease

Question 41. Urine leaves the kidney via :

  1. The renal vein
  2. The urethra
  3. The ureter
  4. The collecting duct.

Answer: 3. The ureter

Question 42. The loop of Henle is most highly developed in :

  1. Freshwater fishes
  2. Mammals
  3. Desert lizards
  4. Salamanders.

Answer: 2. Mammals

Question 43. All the following tests are used to know the abnormality in the kidney:

  1. Pyelography
  2. Polarography
  3. Cystoscope
  4. X-ray photography.

Answer: 2. Polarography

Question 44. In birds, the nitrogenous wastes are conveyed to the exterior directly through the :

  1. Urinary aperture
  2. Urinogenital aperture
  3. Cloacal aperture
  4. Oral aperture.

Answer: 3. Cloacal aperture

NEET Important Questions On Homeostasis

Question 45. Urea is formed by the combination of ammonia with and in :

  1. Oxygen, liver
  2. Carbon dioxide, liver
  3. Carbon monoxide, kidney
  4. Calcium carbonate, liver.

Answer: 2. Carbon dioxide, liver

Question 46. Angiotensin stimulates the adrenal cortex to produce aldosterone which influences in the blood the level of:

  1. Sodium
  2. Potassium
  3. Iron
  4. Calcium.

Answer: 1. Sodium

Question 47. Reabsorption is controlled partly by ADH which is secreted by :

  1. Kidney
  2. Liver
  3. Pituitary
  4. Pancreas.

Answer: 3. Pituitary

Question 48. The amino acids are excreted as such from the body in any one of the following:

  1. cockroach
  2. series
  3. Pila
  4. echinoderms.

Answer: 4. echinoderms.

Question 49.  Deamination occurs during the :

  1. catabolism of amino acid
  2. anabolism of amino acid
  3. formation of urea
  4. Krebs’ cycle.

Answer: 1. catabolism of amino acid

NEET Important Questions On Homeostasis

Question 50. Ammonia is the end product of:

  1. glucose breakdown
  2. fatly acid metabolism
  3. protein metabolism
  4. breakdown of biogenic amines.

Answer: 3. protein metabolism

Question 51. Ornithine cycle is concerned with the production of:

  1. urine
  2. deamination
  3. transamination
  4. biosynthesis of urea.

Answer: 4. biosynthesis of urea

Question 52. Which one of the following substances is completely reabsorbed from the filtrate in the renal tubule under normal conditions?

  1. Uric acid
  2. Salts and water
  3. Glucose
  4. Urea.

Answer: 3. Urea.

Question 53. A terrestrial animal must be able to :

  1. pump salts out actively through the skin
  2. excrete large amounts of salts in its urine
  3. excrete large amounts of water in its urine
  4. conserve water.

Answer: 4. conserve water

Question 54. In a functional kidney which of the following processes does not occur?

  1. Deamination
  2. Reabsorption
  3. Pressure filtration
  4. Tubular reabsorption.

Answer: 1. Deamination

NEET Important Questions On Homeostasis

Question 55. Which one part of the uriniferous tubule is associated with the active transport of Na+?

  1. Bowman’s capsule
  2. Convoluted part
  3. Collecting tubule
  4. Neck.

Answer: 2. Convoluted part

Question 56. The elimination of the insoluble calcium phosphate takes place by :

  1. kidney
  2. liver
  3. lungs
  4. large intestine.

Answer: 4. large intestine

Question 57. The polypeptide which plays a key role in the renal pressure system is :

  1. oxytocin
  2. angiotensin
  3. vasopressin
  4. bradykinin.

Answer: 2. angiotensin

Question 58. The chief nitrogenous waste material in the urine of frogs is:

  1. Ammonia
  2. Uric acid
  3. Allantoin
  4. Urea.

Answer: 4. Urea.

Question 59. Physiologically urea is produced by the action of an enzyme :

  1. uricase
  2. urease
  3. arginase
  4. None of these.

Answer: 3. arginase

NEET Important Questions On Homeostasis

Question 60. Reabsorption of chloride ions (Cl-) from the glomerular filtrate in the kidney tubule of mammals is carried out by :

  1. osmosis
  2. diffusion
  3. active transport
  4. Brownian movement.

Answer: 2. diffusion

Question 61. The system which restores impaired renal circulation

  1. Renal pressure system
  2. Renal failure
  3. uricotelic
  4. ordinal.

Answer: 1. Renal pressure system

Question 62. The human kidney is differentiated into :

  1. cortex and medulla
  2. proximal and distal
  3. outer and inner
  4. None of the above.

Answer: 1. cortex and medulla

Question 63. Malpighian body refers to :

  1. Malpighian tubule present in the kidney
  2. Bowman’s capsule
  3. Bowman’s capsule and network of capillaries inside
  4. Excretory organs of cockroach.

Answer: 3. Bowman’s capsule and network of capillaries inside

Question 64. The diameter of the afferent arteriole entering the Bowman’s capsule is:

  1. less than that of efferent arteriole
  2. more than that of efferent arteriole
  3. same as that of efferent arteriole
  4. None of the above.

Answer: 2. more than that of efferent arteriole

Osmoregulation vs Thermoregulation MCQs

Question 65. Opening into the tubules of the kidney of the frog from the coelom are a number of ciliated funnel-like structures called :

  1. Ostia
  2. nephrostomy
  3. coelomostome
  4. renostome.

Answer: 2. nephrostomy

Question 66. The high threshold substances are :

  1. glucose, sodium, protein
  2. glucose, sodium and fats
  3. urea, uric acid and protein
  4. glucose, sodium and calcium.

Answer: 4. glucose, sodium and calcium

Question 67. The process by which marine animals make adjustments in high salt concentration is :

  1. excretion
  2. respiration
  3. phosphorylation
  4. amination.

Answer: 4. amination.

Question 68. Carbon dioxide is an excretory product because it is formed during :

  1. anabolism
  2. metabolism
  3. deamination
  4. amino acid metabolism.

Answer: 2. metabolism

Question 69. The disease diabetes mellitus is diagnosed by the occurrence in the urine of:

  1. maltose
  2. insulin
  3. glucose
  4. lactose.

Answer: 3. glucose

Question 70. Which of the following is not functionally analogous with others in its group?

  1. Green gland
  2. Laurer’s canal
  3. Malpighian tubule
  4. Nephridium.

Answer: 2. Laurer’s canal

Osmoregulation vs Thermoregulation MCQs

Question 71. In insects, the uric acid is temporarily stored in the :

  1. Cloaca
  2. Fat bodies
  3. Liver
  4. Anal cerci.

Answer: 2. Fat bodies

Question 72. The urinary bladder is not found in :

  1. snakes
  2. crocodiles
  3. alligators
  4. All of these.

Answer: 4. All of these

Question 73. The important function of perspiration is to :

  1. lubricate the epithelial tissue
  2. regulate water supply
  3. regulate body temperature
  4. All of the above.

Answer: 3. regulate body temperature

Question 74. Which of the following is not an excretory activity?

  1. Removal of C02,
  2. Elimination of digestive wastes
  3. Removal of extra salts
  4. None of the above.

Answer: 2. Elimination of digestive wastes

Question 75. Proximal and distal convoluted tubules are parts of a :

  1. oviduct
  2. caecum
  3. vas deferens
  4. nephron.

Answer: 4. nephron.

Question 76. A person feels a fullness sensation of urine if the volume of urine increases up to :

  1. 1000 c.c.
  2. 200 c.c.
  3. 300 c.c.
  4. 600 c.c.

Answer: 1. 1000 c.c.

Question 77. All the following are related to the disease of kidney except:

  1. pyelitis
  2. oedema
  3. ptosis
  4. Bright’s disease.

Answer: 2. oedema

Question 78. Which of the following is not directly connected with cell metabolism?

  1. Excretion
  2. Secretion
  3. Defecation
  4. Perspiration.

Answer: 3. Defecation

Osmoregulation vs Thermoregulation MCQs

Question 79. The urination becomes voluntary when the urine reaches the:

  1. pelvis
  2. urinary bladder
  3. ureter
  4. urethra.

Answer: 4. urethra.

Question 80. Green glands are organs of excretion. They are seen in :

  1. scorpion
  2. birds
  3. crayfish
  4. sharks.

Answer: 3. crayfish

MCQs on Osmoregulation For NEET Question 81. The cells of the proximal tubule develop several microvilli to form a brush border. The number of microvilli per square micron in a human being is :

  1. 150
  2. 500
  3. 3000
  4. 3500.

Answer: 1. 150

Question 82. The glomerular membrane has permeability of about:

  1. 25 times as great as that of usual capillary
  2. 20 times as great as that of usual capillary
  3. 10 times as great as that of usual capillary
  4. same as usual capillary.

Answer: 1. 25 times as great as that of usual capillary

Question 83. The water reabsorption that takes place under the ADH is called the :

  1. obligatory reabsorption
  2. facultative reabsorption
  3. active reabsorption
  4. All of these.

Answer: 2. facultative reabsorption

Question 84. In which group does the toxic substance, the benzoic acid combine with glycine to form a less toxic substance the hippuric acid?

  1. Fishes
  2. Reptiles
  3. Birds
  4. Mammals.

Answer: 4. Mammals.

Question 85. Bowman’s capsule functions as a :

  1. filter
  2. bellow
  3. sponge
  4. suction pump.

Answer: 1. filter

Question 86. Whenever the amount of urine decreases the stage is called :

  1. anuria
  2. polyuria
  3. oliguria
  4. floating kidney.

Answer: 3. oliguria

Osmoregulation vs Thermoregulation MCQs

Question 87. If a person is suffering from a disease called muscular dystrophy, he will eliminate in urine a great amount of:

  1. sulphate
  2. glucose
  3. creatine
  4. water.

Answer: 3.  creatine

Question 88. Ammonia in some aquatic animals is eliminated by :

  1. diffusion
  2. Ammonification
  3. degradation
  4. uricotelism.

Answer: 1. diffusion

Question 89. In reptiles, the uric acid is stored in :

  1. cloaca
  2. fat bodies
  3. liver
  4. anus.

Answer: 1. cloaca

Question 90. Animals that show hypertonic urine with provision for water reabsorption in the kidney are :

  1. Mammals
  2. Birds
  3. Amphibians
  4. None of these.

Answer: 1. mammals

Question 91. In aquatic organisms, the end product of nitrogen exchange is :

  1. NO2
  2. Urea
  3. Allantoin
  4. Ammonia.

Answer: 4. Ammonia.

Question 92. In fever, too much sugar may increase. Its elimination in urine is in the form of:

  1. Sodium chloride
  2. Glucose
  3. Uric acid
  4. Phosphate.

Answer: 2. Plucose

Osmoregulation vs Thermoregulation MCQs

Question 93. Excretion of bile pigments in urine indicates :

  1. Anaemia
  2. Diabetes
  3. Rickets
  4. Jaundice.

Answer: 4. Jaundice.

Question 94. pH of human urine is :

  1. 9
  2. 6-7.2
  3. 3
  4. 2.

Answer: 2. 6-7.2

Question 95. Which of the following is not reabsorbed from the filtrate to the blood at the proximal tubule?

  1. Water
  2. Glucose
  3. Plasma proteins
  4. Na+.

Answer: 3. Na+.

Question 96. Which of the following is concerned with the formation of urea in rabbits?

  1. Blood
  2. Kidney
  3. Liver
  4. Spleen.

Answer: 2. Kidney

Question 97. The glomerular filtration rate in the case of a normal person is:

  1. 180 mL/min.
  2. +140 ml/min.
  3. 145 ml/min.
  4. 120 ml/min.

Answer: 4. +140 ml/min

Question 98. The average volume of fluid filtered from the plasma into Bowman’s capsule is about:

  1. 90 lit/day
  2. 170 lit/day
  3. 190 lit/day
  4. 200 litres/day.

Answer: 2. 170 lit/day

Question 99. The desire to urinate may be suppressed by voluntary control of the external urethral sphincter until the total content is :

  1. 200 to 300 c.c.
  2. 700 to 800 c.c.
  3. 1 to 1.5 litres
  4. 1 to 1.25 litres

Answer: 2. 700 to 800 c.c.

Question 100. Negative nitrogen balance means :

  1. no nitrogen is utilized
  2. nitrogen intake exceeds excretion
  3. nitrogen intake is less than nitrogen excretion
  4. nitrogen intake equals excretion.

Answer: 3. nitrogen intake is less than nitrogen excretion

NEET Biology Chapter-Wise MCQs

Question 101. The regulation of solute and water movement is termed :

  1. Osmosis
  2. Osmoregulation
  3. Excretion
  4. Ecocytosis.

Answer: 2. osmoregulation

Question 102. The total solute concentration is expressed as osmolarity or moles of solute per litre of solution. The unit of measurement of osmolarity is :

  1. Mosm L_1
  2. Milliosomole A and B
  3. Ψ
  4. Both A and B.

Answer: 4. Both A and B

MCQs on Homeostasis Question 103. Osmoconformers are the animals which :

  1. maintain internal osmolarity
  2. do not maintain internal osmolarity
  3. do not actively control the osmotic condition of body fluid
  4. actively control the osmotic condition of body fluid.

Answer: 4. actively control the osmotic condition of body fluid.

Question 104. Osmoregulatory are the animals that :

  1. Maintain internal osmolarity
  2. Maintain internal osmolarity
  3. Actively control the osmotic condition of their body fluids
  4. None of the above.

Answer: 1. maintain internal osmolarity

Question 105. Which of the following are osmoconformer animals?

  1. All marine invertebrates
  2. Hagfish
  3. Shark and rats
  4. All of these.

Answer: 4. All of these.

Question 106. The osmolarity of fresh water is generally less than 50 mosom L_1. What is the osmolarity of the blood of freshwater vertebrates?

  1. 1 bosom L_1
  2. 2-50 mosom L_1
  3. 100 – 200 mosom L_1
  4. 200 – 300 mosom L_1

Answer: 4. 200 – 300 mosom L_1

Question 107. Name the cells present in the gill membrane of freshwater fishes which can import Na+ and Cl_ from the surrounding water containing less than 1 M NaCl.

  1. Ionocytes
  2. Chloride cells
  3. Both 1 and 3
  4. Osmoregulator cells.

Answer: 3. Both 1 and 3

Question 108. The osmolarity of human blood is about 300 mosom L_1. What is the osmolarity of seawater?

  1. 200 – 300 mosom L_1
  2. 50 mosom L-1
  3. 500 mosom L-1
  4. 1000 mosom L-1.

Answer: 4. 1000 mosom L-1.

Question 109. Marine bony fish have the following body fluids :

  1. hypertonic to seawater
  2. hypotonic to seawater
  3. isotonic to seawater
  4. hypotonic to fresh water.

Answer: 1. hypertonic to seawater

NEET Biology Chapter-Wise MCQs

Question 110. Which of the following drinks excrete excess salts through the gill membrane?

  1. Hilsa
  2. Salmon
  3. Fishes that migrate between fresh water and seawater
  4. Both 1 and 2.

Answer: 4. Both 1 and 2.

MCQs on Homeostasis Question 111. The elasmobranch and coelacanths, osmolarity of fluids is raised by accumulating osmolytes in the body. The best examples of osmolytes are :

  1. Urea
  2. TMAO
  3. Uric acid
  4. Both 1 and 2.

Answer: 4. Both 1 and 2.

Question 112. When water is not available the camels do not produce urine but store urea in the tissues. Water is available, they rehydrate themselves by drinking how much water in 10 minutes?

  1. 10 litre
  2. 20 litre
  3. 40 litre
  4. 80 litre.

Answer: 4. 80 litre

Question 113. Which of the following is incorrect?

A. Micturition is carried out by a reflex

B. ADH helps in water elimination, making the urine hypotonic

C. Protein-free fluid is filtered from blood plasma into the Bowman’s capsule

D. Henle’s loop plays an important role in concentrating the urine

E. Glucose is actively reabsorbed in the proximal convoluted tubule.

Choose The Correct Answer

  1. A, B and C
  2. A and C
  3. B and D
  4. B, D and E.

Answer: 3. B and D

Question 114. Match the items of Column 1 with those of Column 2. Match the items of Column 1 with these of Column IIMatch the items of Column 1 with these of Column 2

Osmoregulation And Excretion In Animals Excretory System Match The Items Question 114

  1. A – 4, B – 7, C – 2, D – 1,  E- 3,  F – 8, G – 2. H – 6
  2. A – 4, B – 7, C – 2, D – 1, E – 8, F – 2, G – 6, H – 5
  3. A -4,  B – 3, C – 2, D – 1, E – 5, F – 6, G – 7, H – 8
  4. A – 4, B – 7, C – 1, D – 2, E – 3, F – 8, G – 6, H – 5.

Answer: 1. A – 4, B – 7, C – 2, D – 1,  E- 3,  F – 8, G – 2. H – 6

Homeostasis MCQ  Question 115. Which of the following is correct?

  1. During micturition, the urinary bladder contracts and the urethral sphincters open.
  2. Flame cells and malpighian tubules are found in flatworms and insects respectively.
  3. Two counter-current systems are formed in the kidney by the loop of Henle and the Vasa
    recta.
  4. All of the above.

Answer: 4. All of the above.

Question 116. Which of the following is incorrect?

  1. Skin functions as an accessory excretory organ
  2. Mammals can eliminate hypotonic and hypertonic urine according to the body’s needs
  3. Mammals are ureotelic, but birds are uricotelic.
  4. None of these.

Answer: 4. None of these.

Homeostasis MCQ  Question 117. In which of the following protonephridia act as excretory organs?

  1. Rotifers
  2. Branchiostoma
  3. Some annelids
  4. All of the above.

Answer: 4. All of the above.

Question 118. What is the value of X, Y and Z?

Osmoregulation And Excretion In Animals Excretory System What Is The Value Of X,Y,Z Question 118

  1. 300, 300, 1400
  2. 1400,200,200
  3. 1400, 500, 500
  4. 1400, 300, 300

Answer: 2. 1400,200,200

Question 119. The two kidneys in the human body are located one on each side against the dorsal inner surface of the lower back at the level of

  1. 10 and 11 thoracic vertebra
  2. 12th thoracic and 1st and 2nd lumbar vertebrae
  3. 1st and 2nd lumbar vertebrae
  4. 5th lumbar and 1st sacral vertebrae.

Answer: 2. 12th thoracic and 1st and 2nd lumbar vertebrae

Question 120.  Cortical nephron have their glomeruli

  1. in inter cortex
  2. In inner cortex
  3. close to the inner margin of the cortex
  4. outer medulla.

Answer: 4. outer medulla.

Question 121. Which of the following is involved in the regulation of kidney function?

  1. ADH
  2. JGA
  3. HAAS and ANF
  4. All of the above.

Answer: 4. All of the above.

Question 122. Glomerular filtrate does not contain :

  1. proteins
  2. glucose
  3. salts
  4. water.

Answer: 1. proteins

Homeostasis MCQ  Question 123. The presence of blood in urine due to a lesion of the kidney or urinary tract is called :

  1. Haematuria
  2. Haemoglobinuria
  3. Glucosuria
  4. Albuminuria.

Answer: 1. Haematuria

Question 124. The specific gravity of urine is :

  1. 1.003 to 1.040
  2. 1.0 to 1.5
  3. 0.001 to 0.002
  4. 1.03 to 1.4.

Answer: 1. 1.003 to 1.040

Question 125. Ammonia is the chief nitrogenous waste in :

  1. Mosquito
  2. Bony fishes
  3. Cartilaginous fishes
  4. Desert mammal.

Answer: 2. bony fishes

Question 126. Blood urea level is an index of function.

  1. Liver
  2. Liver and kidney
  3. Kidney
  4. Pancreatic.

Answer: 3. Kidney

Question 127. Most of the terrestrial insects get rid of the bulk of their nitrogenous wastes as :

  1. urea
  2. uric acid
  3. ammonia
  4. purines.

Answer: 2. uric acid

Question 128. The artificial kidney is based upon the mechanism of:

  1. osmosis
  2. dialysis
  3. plasmolysis
  4. diffusion.

Answer: 2. dialysis

Question 129. Which of the following is the diluting segment of the uriniferous tubule?

  1. Ascending limb
  2. Descending limb
  3. Dct
  4. Pct.

Answer: 1. Ascending limb

Question 130. A marine bony fish must continuously :

  1. Acquire water and get rid of salts
  2. Get rid of both water and salts
  3. Get rid of water and acquire salts
  4. Acquire both water and salts.

Answer: 1. Acquire water and get rid of salts

Question 131. In the flame cell system of a planarian, materials are drained directly from the :

  1. Blood
  2. Lymph
  3. Interstitial fluid
  4. Coelom.

Answer: 3. Interstitial fluid

Question 132. The flame cell system functions mostly to :

  1. Remove ammonium ions
  2. Remove urea
  3. Regulate ph
  4. Osmoregulate.

Answer: 4. Osmoregulate.

Question 133. The kidney regulates acid-base balance by each of the following mechanisms:

  1. Reabsorbing filtered bicarbonate
  2. Acidifying the urine by h+ secretion
  3. Excreting ammonium salts
  4. Active reabsorption of h+.

Answer: 4. Active reabsorption of h+

Question 134. In insects, malpighian tubules drain materials directly from the :

  1. Gut
  2. Haemocoel
  3. Blood
  4. Lymph.

Answer: 3. Blood

Question 135. A malpighian tubule empties urine into the :

  1. Gut
  2. Coelom
  3. Ureters
  4. Lymph.

Answer: 1. Gut

Question 136. A nephridium of an earthworm drains materials directly from the:

  1. Gut
  2. Blood
  3. Coelom
  4. Lymph.

Answer: 2. Blood

Question 137. Which of the following sentiments? Is the kidney correct?

  1. The macula densa is a region of the distal tubule that is closely associated with an afferent glomerular arteriole
  2. Collecting tubules are located in both the medulla and cortex
  3. Proximal convoluted tubules have an extensive microvillus (brush) border
  4. All of the above.

Answer: 4. All of the above.

Question 138. At normal room temperature, most body heat loss is by:

  1. Convection
  2. Direct conduction
  3. Radiation
  4. Sweating.

Answer: 3. Radiation

Question 139. The force that moves fluid from the blood through the walls of a capillary and bowman’s capsule of a nephron is:

  1. The beating of cilia
  2. Peristalsis of the capsule.
  3. Gravity
  4. Blood pressure.

Answer: 4. Blood pressure.

Question 140. When the temperature of the surroundings is greater than the body temperature, heat loss is possible only through which of the following?

  1. Radiation
  2. Convection
  3. Conduction
  4. Evaporation.

Answer: 4. Evaporation.

Homeostasis MCQ  Question 141. Osmoregulation is control over the :

  1. Removal of nitrogen from the body
  2. The pH of the blood
  3. Concentration of salt and water in the body
  4. Osmotic properties of cell membranes.

Answer: 3. Concentration of salt and water in the body

Question 142. For which of the following substances would you expect the renal clearance to be the lowest, under normal conditions?

  1. Urea
  2. Creatinine
  3. Sodium
  4. Glucose.

Answer: 4. Glucose.

Question 143. In which of these animals, the antennal gland functions as an excretory organ?

  1. Human being
  2. Cockroach
  3. Planana
  4. Prawn
  5. Earthworm

Answer: 1. Human being

Question 144. A freshwater fish must continuously :

  1. Acquire water and get rid of salt
  2. Get rid of both water and salt
  3. Get rid of water and acquire salt
  4. Acquire both water and salt.

Answer: 3. Get rid of water and acquire salt

Question 145. In the kidney :

  1. As much as 80% of the amino acids and glucose of the ultrafiltrate are reabsorbed by the thin portion of the loop of Henle.
  2. Renin, produced by the juxtaglomerular apparatus, acts directly on arterial smooth muscle to cause vasodilation.
  3. The antidiuretic hormone causes the collecting tubules to become more permeable to water, thus concentrating the urine.
  4. Interlobular arteries arise from arcuate arteries and pass into the cortex via the medullary rays.

Answer: 3. Antidiuretic hormone causes the collecting tubules to become more permeable to water, thus concentrating the urine.

Question 146. The kidneys not only remove the waste products from the blood but also play a very important role in maintaining :

  1. Equilibrium of the body
  2. Temperature of the body
  3. Blood pressure constant
  4. Constant composition of the blood irrespective of the nature of the food or fluid intake.

Answer: 4. Constant composition of the blood irrespective of the nature of the food or fluid intake.

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