Excretory System MCQ (Multiple Choice Questions and Answers)
Q1. The number of uriniferous tubules in each kidney of man is
- About 10,000
- About 5,000
- Numerous
- About 1.0*106
Answer: 4
Q2. The waste matters (urea) are transported by
- Blood
- Lymph
- RBC
- None of the above
Answer: 1
Q3. Conversion of excess of amino acids into urea is done in
- Lungs
- Large intestine
- Liver
- Cloaca
Answer: 3
Q4. Columns of Bertin are found in
- Testes
- Ovaries
- Kidney
- Liver
Answer: 3
Q5. Man is
- Ammonotelic
- Ureotelic
- Uricotelic
- None of the above
Answer: 2
Q6. The yellow colour of urine is due to
- Uric acid
- Urea
- Urochrome
- Melanin
Answer: 3
Q7. Malpighian body is present in
- Skin
- Kidney
- Testes
- Ovaries
Answer: 2
Q8. Certain carbonates and phosphates are removed by
- Skin
- Liver
- Kidneys
- None of the above
Answer: 4
Q9. The retroperitoneal kidney is
- Kidney of fish
- Kidney covered by peritoneum on ventral side
- Kidney covered by peritoneum on dorsal side
- Kidney uncovered by peritoneum on either side
Answer: 2
Q10. In man kidney is
- Pronephros
- Mesonephros
- Metanephros
- None of the above
Answer: 3
Q11. Micturition is
- Removal of urea from blood
- Removal of uric acid
- Passing out urine
- Removal of faeces
Answer: 3
Q12. The excretory organs of Palaeomon are
- Malpighian tubules
- Nephridia
- Green glands
- Kidney’s
Answer: 3
Q13. Excretion is a continuous process but urine is not passed out continuously because of
- Urinary bladder
- Cloaca
- Rectum
- Ureter
Answer: 1
Q14. The main excretory organs in man are
- Kidneys
- Nephridia
- Trachea
- Lungs
Answer: 1
Q15. The smallest functional unit of kidney is
- Nephron
- Collecting tube
- Glomerulus
- Bowman’s capsule
Answer: 1
Q16. Kidneys are not the only organs of excretion, their work is supplemented by
- Liver
- Skin
- Heart
- Large intestine
Answer: 2
Q17. The kidneys are located
- Within the coelom
- Near the buccal cavity
- Near the heart
- Outside the coelom
Answer: 4
Q18. The position of kidneys is
- Inter-peritoneal
- Retroperitoneal
- Intraperitoneal
- Neon of these
Answer: 2
Q19. The bunch of capillaries present in the Bowman’s capsule is called
- Paccinian corpuscle
- Bowman’s capsule
- Glomerulus
- Malpighian capsule
Answer: 3
Q20. The cells which line the neck and the body of the nephron are
- Smooth squamous epithelial
- Tessellated epithelial
- Stratified epithelial
- Cuboidal and ciliated epithelial
Answer: 4
Q21. Diameter of the renal afferent vessel is
- Same as that of efferent
- Smaller than that of efferent
- Larger than that of efferent
- There is no efferent vessel
Answer: 3
Q22. In Annelids excretory organs are
- Nephridia
- Malpighian tubules
- Green glands
- Kidneys
Answer: 1
Q23. The afferent and efferent vessels are
- Arterial in nature
- Venous in nature
- One is arterial and the other is venous
- None of the above
Answer: 1
Q24. Malpighian body is constituted by
- Glomerulus only
- Glomerulus and Bowman’s capsule
- Glomerulus and efferent vessel
- Glomerulus, Bowman’s capsule and efferent vessel
Answer: 2
Q25. Deamination is the first step in urea formation. It means the
- Reduction of ammonia
- Oxidation of ammonia
- Addition of amino group to a nonamino organic molecule
- Removal of amino group from an amino acid
Answer: 4
Q26. The kidneys not only remove the waste products from the blood but also play a very important role in maintaining
- Equilibrium of the body
- Temperature of the body
- Constant composition of the blood irrespective of the nature of the food or fluid intake
- Blood pressure constant
Answer: 3
Q27. The glomerular afferent arteriole has a pressure of
- + 120 mm Hg
- -120 mm Hg
- + 95 mm Hg
- +75 mm Hg
Answer: 4
Q28. The pH of fresh urine is about
- 1
- 0
- 4
- 9
Answer: 2
Q29. Glycosuria is the term used for
- Loss of glucose in the urine
- Loss of blood in the urine
- Loss of salts in the urine
- None of these
Answer: 1
Q30. Haematuria is the disorder involving
- The loss of blood through the urine
- Loss of haemoglobin in R.B.C.
- Loss of glucose in urine
- The increase in concentration blood urea
Answer: 1
Q31. Uraemia is an excretory disorder in which
- The tubules of kidney reabsorb urea in large amount
- Concentration of urea goes high in the blood because the tubules are not able to remove it from the blood
- Urea is produced in excess in the body
- None of these
Answer: 2
Q32. The reabsorption of glucose from the glomerular filtrate is due to
- High osmotic pressure of filtrate
- Passive diffusion
- Active transport across the walls of proximal convoluted part
- Filtration pressure exerted on the fluids in the loop of Henle
Answer: 3
Q33. The elimination of insoluble calcium phosphate takes place by
- Liver
- Kidney
- Large intestine
- Skin
Answer: 3
Q34. Excretion in the form of uric acid and urates in birds is helpful in
- Conserving body heat
- Conserving water
- Elimination of water
- Conserving urea
Answer: 2
Q35. Physiologically urea is produced by the action of an enzyme
- Uricase
- Urease
- Arginase
- None
Answer: 3
Q36. Excretion of bile pigments in the urine indicates
- Anaemia
- Diabetes
- Rickets
- Jaundice
Answer: 4
Q37. Malpighian tubules are the excretory organs in
- Cockroach
- Platyhelminthes
- Ascaris
- Pila
Answer: 1
Q38. Which of the following enzyme is produced in the kidneys
- Rennin
- Renin
- Uricase
- Arginase
Answer: 2
Q39. A notch present on the mesial side of kidney is known as
- Ureter
- Pelvis
- Hilus
- Pyramid
Answer: 3
Q40. The collecting ducts in the kidney converge to from
- Pyramid
- Calyx
- Pelvis
- Columns of Bertin
Answer: 1
Q41. The narrow apex of pyramid is called
- Column of Bertin
- Calyx
- Papillary duct of Bellini
- Pelvis
Answer: 3
Q42. In adult Frog, the kidney is
- Pronephros
- Opisthonephros
- Mesonephros
- Metanephros
Answer: 3
Q43. In human beings, gout is caused by
- Deficiency of iodine
- Excessive secretion of thyroid
- Excessive liberation of uric acid
- Deposition of uric acid
Answer: 4
Q44. The amount of urine output per day by a normal human being is
- 4-5 liters
- 3-4 liters
- 1-1.8 liters
- 5-0.75 liters
Answer: 3
Q45. Rate of glomerular filtration per minute in an adult human being is
- 125 ml
- 25 ml
- 225 ml
- 425 ml
Answer: 4
Q46. Tubular secretion adds to the glomerular filtrate
- Urea
- Uric acid
- ammonia
- All the above
Answer: 4
Q47. The process that pushes out water and other dissolved materials from blood in the glomerulus is
- Dialysis
- Secretion
- Filtration
- Ultrafiltration
Answer: 4
Q48. In kidneys, urine is produced by three processes
- Dialysis, ultra filtration and tubular secretion
- Ultra filtration, dialysis and tubular secretion
- Ultra filtration, tubular reabsorption and tubular secretion
- Tubular reabsorption and tubular secretion
Answer: 3
Q49. Collecting tubes are lined by
- Squamous epithelium
- Columnar epithelium
- Cuboidal epithelium
- Cuboidal and columnar epithelium
Answer: 4
Q50. Bowman’s capsule is lined by
- Ciliated cuboidal epithelium
- Squamous epithelium
- Non ciliated cuboidal epithedal
- Non ciliated columnar epithelium
Answer: 2