These Excretory Products And Their Elimination NEET Questions and Answers are composed by our livemcqs team specially for NEET, AIIMS, and other Medical Entrance aspirants. These Excretory Products And Their Elimination NEET MCQ Questions and Answers cover all concepts of Chapter 19 of Class 11 Biology. You can download these Questions by clicking the link “NEET Questions On Excretory Products And Their Elimination NEET Questions PDF” given below.
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| Topic: | Excretory Products And Their Elimination NEET Questions |
| Examinations: | NEET, AIIMS, JIPMER |
| Class: | 11 (CBSE/NCERT) Biology |
| No of Questions: | 100+ |
| Question type: | Multiple Choice Question |
| Question Format: | Text & PDF |
| PDF Size: | 1 MB |
| Download PDF: | Attached Below |
Excretory Products And Their Elimination NEET Questions and Answers
1. Ammonia is generally excreted through which of the following?
a) Kidneys
b) Gills
c) Lungs
d) Skin
Answer: b
2. Which of the following organisms is not ureotelic?
a) Bony fishes
b) Mammals
c) Terrestrial amphibians
d) Marine fishes
Answer: a
3. In ureotelic organisms, ammonia is converted into which of the following?
a) Uric acid
b) Carbon dioxide
c) Remains as such
d) Urea
Answer: d
4. Which of the following is not a uricotelic organism?
a) Mammals
b) Reptiles
c) Birds
d) Land snails
Answer: a
5. Which of the following is not a guanotelic organism?
a) Spiders
b) Scorpions
c) Starfish
d) Marine birds
Answer: c
6. Excretion of which of the following is for the adaptation of water conservation?
a) Ammonia
b) Urea
c) Uric acid
d) Carbon dioxide
Answer: c
7. Which of the following organism has flame cells for excretion?
a) Flatworms
b) Roundworms
c) Hookworms
d) Pinworms
Answer: a
8. Which of the following phyla have nephridia as an excretory structure?
a) Arthropods
b) Annelids
c) Platyhelminthes
d) Ctenophora
Answer: b
9. Which of the following is not accumulated by the body of living organisms?
a) Ammonia
b) Carbon dioxide
c) Urea
d) Oxygen
Answer: d
10. Which of the following is not the major form of nitrogenous wastes?
a) Ammonia
b) Urea
c) Carbon dioxide
d) Uric acid
Answer: c
11. Which of the following is the most toxic form of nitrogenous waste?
a) Guanine
b) Ammonia
c) Urea
d) Uric acid
Answer: b
12. Malpighian tubules are the excretory structures of which of the following?
a) Insects
b) Flatworms
c) Roundworms
d) Crustaceans
Answer: a
13. Which of the following are the excretory structures of crustaceans?
a) Nephridia
b) Protonephridia
c) Malpighian tubules
d) Antennal glands
Answer: d
14. Which of the following is not included in the excretory system of humans?
a) Cloaca
b) Kidneys
c) Ureters
d) Urethra
Answer: a
15. Where are the kidneys situated?
a) Between the 7th and 10th ribs
b) Between the last thoracic and third lumbar vertebra
c) Between the 8th and 9th ribs
d) Between the first and second thoracic vertebra
Answer: b
16. What is the average weight of a human kidney?
a) 40 g
b) 100 g
c) 120 g
d) 10 g
Answer: c
17. Through which of the following nerves and blood vessels enter the kidneys?
a) Hilum
b) Tubules
c) Pelvis
d) Medulla
Answer: a
18. Which of the following is responsible for the formation of Columns of Bertini?
a) Medulla
b) Renal pelvis
c) Calyces
d) Cortex
Answer: d
19. How many nephrons are present in each kidney?
a) One million
b) One billion
c) One trillion
d) Two million
Answer: a
20. In how many parts a nephron is divided?
a) One
b) Two
c) Three
d) Four
Answer: b
21. What will happen if the diameter of the afferent arteriole is less than efferent arteriole?
a) Dilute urine
b) Concentrated urine
c) No ultrafiltration
d) Black urine
Answer: c
22. What are osmoregulators?
a) Animals which cannot change their body osmolarity
b) Animals which can change their osmolarity sometimes
c) Animals which can change their osmolarity
d) Animals which cannot excrete out waste
Answer: a
23. Which of the following organism is not an osmoconformer?
a) Hagfish
b) Spongilla
c) Marine invertebrates
d) Skates
Answer: b
24. Which of the following is not an adaptation of kangaroo rat?
a) Drinks water
b) Feeds on fatty seeds
c) Excretes concentrated urine
d) The nasal counter current system
Answer: a
25. Which of the following structure encloses glomerulus?
a) Bowman’s capsule
b) Medullary pyramids
c) Cortex
d) Renal capsule
Answer: a
26. What is the full form of PCT?
a) Proximal Coronary Tube
b) Proximal Convoluted Tubule
c) Proximal Carotid Tube
d) Part Covering Thymus
Answer: b
27. Which of the following is succeeded by PCT?
a) Henle’s loop
b) Glomerulus
c) DCT
d) Collecting duct
Answer: a
28. Where do the DCTs of nephrons open into?
a) PCT
b) Henle’s loop
c) Conducting duct
d) Glomerulus
Answer: c
29. Which of the following is not situated in the cortical region of the kidney?
a) PCT
b) DCT
c) Malpighian corpuscle
d) Loop of Henle
Answer: d
30. Where do the juxtamedullary nephrons dip?
a) Medullary pyramids
b) Calyces
c) Deep in the medulla
d) Renal pelvis
Answer: c
31. The peritubular capillaries emerge from which of the following?
a) Efferent arteriole
b) Afferent arteriole
c) Henle’s loop
d) Renal artery
Answer: a
32. Which of the following runs parallel to the Henle’s loop?
a) Renal artery
b) Renal vein
c) Vasa recta
d) Ureters
Answer: c
33. Which of the following prevents the backflow of urine?
a) Valves
b) Muscles
c) Urinary sphincter
d) Oblique opening of ureters
Answer: d
34. Which of the following vessels carry blood with minimum urea?
a) Renal artery
b) Renal vein
c) Hepatic vein
d) Hepatic portal vein
Answer: b
35. The outer layer of Bowman’s capsule is made up of which of the following epithelium?
a) Squamous epithelium
b) Transitional epithelium
c) Cuboidal epithelium
d) Columnar epithelium
Answer: a
36. Juxta-medullary nephrons constitute what percentage of the total nephrons?
a) 80%
b) 50%
c) 15-20%
d) 75-95%
Answer: c
37. Which of the following is not a process of urine formation?
a) Glomerular filtration
b) Reabsorption
c) Secretion
d) Excretion
Answer: d
38. Which of the following is the first step towards urine formation?
a) Glomerular filtration
b) Ultrafiltration
c) Secretion
d) Reabsorption
Answer: a
39. On average, how much volume of blood is filtered by the kidneys per minute?
a) 100-150 ml
b) 500 ml
c) 1100-1200 ml
d) 5000 ml
Answer: c
40. How many layers of glomerular epithelium are involved in the filtration of blood?
a) One
b) Two
c) Three
d) Four
Answer: c
41. Which of the following are not passed on to the lumen of Bowman’s capsule during glomerular filtration?
a) Fat molecules
b) Glucose
c) Water
d) Proteins
Answer: d
42. What is the percentage of cortical nephrons concerning the total nephrons present in the kidneys?
a) 75-80%
b) 50%
c) 15-20%
d) 95%
Answer: a
43. Which of the following type of nephrons are prominently present in the desert mammals?
a) Cortical nephrons
b) No nephrons are present
c) Medullary nephrons
d) Juxta-medullary nephrons
Answer: d
44. What is the full form of GFR?
a) Glomerulus filtering unit
b) Glomerular filtration rate
c) Globulin fast rate
d) Globulin filtering rate
Answer: b
45. In approximately how many minutes, the whole blood of the body is filtered through the kidneys?
a) 10 minutes
b) 7 minutes
c) 4-5 minutes
d) 2 minutes
Answer: c
46. Which of the following pair of amino acids are removed by the ornithine cycle?
a) CO2 and H2O
b) H2O and O2
c) CO2 and urea
d) Ammonia and CO2
Answer: d
47. What is the starting point of the ornithine cycle?
a) Ornithine amino acid
b) Citrulline amino acid
c) Arginine
d) Fumeric acid
Answer: a
48. How many moles of ATP are required in the formation of urea?
a) One
b) Two
c) Three
d) Four
Answer: c
49. Which of the following is the main enzyme in the ornithine cycle?
a) Arginase
b) Carbamyl phosphatase
c) Arginosuccinate
d) Urease
Answer: a
50. What is the full form of JGA?
a) Juxtaglomerular apparatus
b) Juxta glomerulus aperture
c) Juxta glial apparatus
d) Juxta glial aperture
Answer: a
51. JGA is formed by the cellular modifications of which of the following?
a) PCT
b) DCT
c) Convoluted tubule
d) Renal tubule
Answer: b
52. A fall in the GFR activates which of the following cells?
a) PCT cells
b) Podocytes
c) DCT epithelium
d) JG cells
Answer: d
53. What is the GFR of a healthy individual?
a) 150 litres per day
b) 180 litres per day
c) 200 litres per day
d) 80 litres per day
Answer: b
54. What is reabsorption?
a) Absorption of the filtrate by the renal tubules
b) Secretion of nutrients by the filtrate
c) Absorption of retentate by the renal tubules
d) Absorption of proteins and carbohydrates only
Answer: a
55. Which of the following substances are not reabsorbed actively by the nephrons?
a) Glucose
b) Amino acids
c) Sodium ions
d) Nitrogenous wastes
Answer: d
56. How is water reabsorbed in the initial segments of the nephrons?
a) By the active transport
b) By the passive transport
c) Water is not reabsorbed
d) Sometimes by active transport and sometimes by passive transport
Answer: b
57. Which of the following substances are not secreted by the tubular cells?
a) H+ ions
b) K+ ions
c) Ammonia
d) Glucose
Answer: d
58. What is the significance of the tubular secretion?
a) To maintain the hypotonic condition with the plasma
b) To maintain the hypertonic condition with the plasma
c) To maintain the ionic balance
d) To maintain the air pressure
Answer: c
59. By which protein is the blood colloidal osmotic pressure maintained?
a) Albumin
b) Globulin
c) Haemoglobin
d) Myoglobin
Answer: a
60. What does CHP stand for?
a) Capsular hydrostatic pressure
b) Capsid hydrated protein
c) Capsomere hydrated protein
d) Capsule hydrolysed protein
Answer: a
61. What is the condition of no urine formation called?
a) Oliguria
b) Polyuria
c) Diuresis
d) Anuria
Answer: d
62. What does CHP consist of?
a) Interstitial and artery pressure
b) Renal vein and artery pressure
c) Juxta medullary pressure and the arteriole pressure
d) Interstitial pressure and renal pressure
Answer: d
63. PCT is lined by which of the following cells?
a) Brush border columnar cells
b) Brush border cuboidal cells
c) Ciliated cuboidal cells
d) Ciliated columnar cells
Answer: b
64. Which of the following is not reabsorbed in the PCT segment?
a) Water
b) Glucose
c) HCO3–
d) H+
Answer: d
65. Which of the following is not correct regarding PCT?
a) It does not maintain the pH
b) It maintains the ionic balance of the body
c) It absorbs HCO3– ions
d) It secretes potassium ions
Answer: a
66. In which renal tubule, the reabsorption is minimum?
a) Descending limb of Henle’s loop
b) Glomerulus
c) Collecting tubule
d) Ascending limb of Henle’s loop
Answer: d
67. How does the ascending loop of Henle allow the movement of electrolytes?
a) Only active transport
b) Only passive transport
c) By both active and passive transport
d) Only by diffusion
Answer: c
68. What happens when the filtrate passes through the ascending loop of Henle?
a) It gets dilute
b) It gets concentrated
c) No effect
d) It reverts back
Answer: a
69. Which of the following is reabsorbed completely in the PCT?
a) Amino acids
b) Glucose
c) Ascorbic acid
d) Sodium ions
Answer: b
70. Is the nephric filtrate present in which segment of the renal tubule is isotonic to plasma?
a) Collecting duct
b) Collecting tubule
c) PCT
d) DCT
Answer: c
71. Which of the following does not show maximum osmolarity?
a) Tip of Henle’s loop
b) Interstitial fluid
c) PCT
d) Collecting duct
Answer: c
72. On which segment onwards, the nephric filtrate is called as urine?
a) DCT
b) PCT
c) Collecting duct
d) Glomerulus
Answer: a
73. The passage of which of the following makes the urine hypertonic?
a) Sodium ions
b) Urea
c) Glucose
d) Potassium ions
Answer: b
74. What is the normal amount of urea in the blood?
a) 10-15 mg/100 ml
b) 18-38 mg/100 ml
c) 40-50 mg/100 ml
d) 0.2-0.5 mg/100 ml
Answer: b
75. What is the percentage of urea present in the urine?
a) 96%
b) 0.2%
c) 2%
d) 5%
Answer: c
76. In which of the following segments, conditional reabsorption of sodium ions take place?
a) PCT
b) DCT
c) Collecting duct
d) Henle’s loop
Answer: b
77. Which of the following segments are responsible for maintaining the sodium-potassium balance?
a) Ascending loop of Henle
b) Descending loop of Henle
c) DCT
d) Glomerulus
Answer: c
78. The collecting duct extends from the cortex of the kidney to which of the following parts?
a) Outer parts of medulla
b) Inner parts of medulla
c) Into the medullary pyramids
d) Into the renal pelvis
Answer: b
79. Which of the following segments can allow the passage of urea through them?
a) Collecting duct
b) PCT
c) DCT
d) Henle’s loop
Answer: a
80. What are diuretics?
a) Substances which increase the urine formation
b) Substances which decrease the urine formation
c) Substances which increase the glucose content in the urine
d) Substances which change the colour of the urine
Answer: a
81. Which of the following is called a salt retaining hormone?
a) ANF
b) ADH
c) Oxytocin
d) Aldosterone
Answer: d
82. Hyposecretion of ADH causes which of the following diseases?
a) Diabetes mellitus
b) Diabetes insipidus
c) Addison’s disease
d) Simmonds’s disease
Answer: b
83. What happens due to the increase of sodium ions in the blood?
a) Increase in blood pressure
b) A decrease in blood pressure
c) Increase in the solubility of nitrogen
d) A decrease in solubility of sodium ions
Answer: a
84. What happens when there is an increase in sodium ions in the urine?
a) Increase in blood pressure
b) Increase in blood volume
c) A decrease in blood pressure
d) A decrease in the solubility of sodium ions
Answer: c
85. Juxtaglomerular cells are the modifications of which of the following?
a) Smooth muscle cells
b) Skeletal muscle cells
c) Adipocytes
d) Areolar cells
Answer: a
86. What is the myogenic mechanism of the kidney?
a) As blood pressure increases, arteries get constricted
b) As blood pressure decreases, arteries get dilated
c) As blood pressure increases, efferent renal arteriole dilates
d) As blood pressure increases, afferent renal arteriole dilates
Answer: c
87. Which of the following organs does not help in the elimination of excretory wastes?
a) Skin
b) Lungs
c) Liver
d) Heart
Answer: d
88. Which of the following is not an excretory waste of liver?
a) Cholesterol
b) Bilirubin
c) CO2
d) Vitamins
Answer: c
89. Which of the following plays a significant role in the concentration of urine?
a) Henle’s loop and vasa recta
b) PCT and DCT
c) Glomerulus and Bowman’s capsule
d) Collecting duct and tubule
Answer: a
90. What is meant by counter-current?
a) When blood flows in the opposite direction in two limbs of the Henle’s loop
b) When the blood flows in the same direction in two limbs of the Henle’s loop
c) When the blood does not flow through any of the limbs of Henle’s loop
d) When some blood flows in Henle’s loop and the other blood flows in the vasa recta
Answer: a
91. What is the significance of the proximity of Henle’s loop and vasa recta?
a) Maintains osmolarity
b) Maintains the concentration of only water
c) For reabsorption of nutrients
d) No proximity at all
Answer: a
92. What is the osmolarity of the urine in the cortex?
a) 300 mOsmol/L
b) 600 mOsmol/L
c) 900 mOsmol/L
d) 1200 mOsmol/L
Answer: a
93. Which of the following returns NaCl into the interstitium?
a) Ascending loop of Henle
b) Descending loop of Henle
c) Ascending portion of the vasa recta
d) Descending portion of the vasa recta
Answer: c
94. Which of the following structure make the countercurrent mechanism?
a) Henle’s loop and glomerulus
b) PCT and DCT
c) Henle’s loop and vasa recta
d) Vasa recta and collecting duct
Answer: c
95. Which of the following is not a feature of a counter-current mechanism?
a) Helps in maintaining the concentration gradient
b) Helps in making the passage of water easier
c) Helps in concentrating the urine
d) Helps in diluting the urine
Answer: d
96. Which of the following are not involved in the monitoring of kidneys?
a) Hypothalamus
b) Heart
c) Eyes
d) JGA
Answer: c
97. Osmoreceptors in the body is not directly activated by which of the following?
a) Ionic concentration
b) Blood volume
c) Body fluid volume
d) Blood pressure
Answer: d
98. What will happen if the blood volume increases?
a) Switch off the osmoreceptors
b) Osmoreceptors get activated
c) Osmoreceptors get permanently deactivated
d) Osmoreceptors do not play a significant role
Answer: a
99. What is ADH?
a) Vasodilator
b) Phagocytic
c) Receptor
d) Vasoconstrictor
Answer: d
100. Which of the following is released by JG cells when GFR falls its normal levels?
a) Renin
b) Rennin
c) Lipase
d) ADH
Answer: a
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