Excretion MCQ Questions and Answers Quiz

21. The yellow colour of urine of the vertebrates in due to

  1. Cholesterol
  2. Urochrome
  3. Uric acid
  4. Malamin

22. Lungs expel

  1. CO2
  2. H2O
  3. CO2 and water
  4. CO2 and water vapours

23. In ornithin cycle which of the following waste are removed from the blood?

  1. CO2 and urea
  2. Ammonia and urea
  3. CO2 and ammonia
  4. Urea and urine

24. Main function of uriniferous tubules

  1. Concentration of urine
  2. Passage of urine
  3. Reabsorption of useful substances from glomerular filtrate
  4. Removal of urea and other waste from blood

25. Loop of henle and collecting ducts are locketed in kidney is

  1. Cortex
  2. Medulla pyramid
  3. Columns of bertini
  4. Calyces

26. Peritubuler is in

  1. Cortex
  2. Deep in medulla
  3. Calyces
  4. Surround to duct of bellini

27. The function of renin is

  1. Degradation of angiotensinogen
  2. Stimulation of corpus luteum
  3. To reduce blood pressure
  4. Vasodilation

28. Which one of the following statement is impereble to water

  1. Descending limb of loop of henle is impereable to water
  2. DCT is incapable of reabsorbing HCO3
  3. Nearly 99% of the glomerular filterate is reasorbed by the renal tubules
  4. Ascending limb of loop of henle is impereable to water

29. Proboscis gland is balanoglossus is associated with

  1. Digestion
  2. Excretion
  3. Circulation
  4. Respiration

30. Angitensinogen is converted in Angiotensin by

  1. dil HCl
  2. casein
  3. Renin
  4. Hippuric acid
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