Excretory Products And Their Elimination Multiple Choice Question and Answers

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Excretory Products And Their Elimination Multiple Choice Questions

Question 1. Which of the following statements is correct?

  1. The descending limb of the loop of Henle is impermeable to water.
  2. The ascending limb of the loop of Henle is permeable to water.
  3. The descending limb of the loop of Henle is permeable to electrolytes.
  4. The ascending limb of the loop of Henle is impermeable to water.

Answer: 1. The descending limb of the loop of Henle is impermeable to water.

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Question 2. The part of the nephron involved in the active reabsorption of sodium is—

  1. Distal convoluted tubule
  2. Proximal convoluted tubule
  3. Bowman’s capsule
  4. Descending limb of Henle’s loop

Answer: 2. Proximal convoluted tubule

Excretory products and their elimination multiple choice questions with answers PDF

Question 3. Human urine is usually acidic because—

  1. Hydrogen ions are actively secreted into the filtrate
  2. The sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries
  3. Excreted plasma proteins are acidic
  4. Potassium and sodium exchange generates acidity

Answer: 1. Hydrogen ions are actively secreted into the filtrate

Question 4. Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?

  1. Increase in aldosterone levels
  2. Increase in antidiuretic hormone levels
  3. Decrease in aldosterone levels
  4. Decrease in antidiuretic hormone levels

Answer: 1. Increase in aldosterone levels

WBCHSE Excretory Products And Their Elimination Multiple Choice Question And Answers

Question 5. Proximal convoluted tubule nephron is responsible for—

  1. Filtration of blood
  2. Maintenance of glomerular filtration rate
  3. Selective reabsorption of glucose, amino acid, NaCI, and water
  4. Reabsorption of salts only

Answer: 3. Selective reabsorption of glucose, amino acid, NaCI, and water

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Question 6. The correct match is—

  1. DCT—Secretion of H+ and Cl– ions.
  2. Henle’s loop—Reabsorption of glucose, water, and Na+ ions.
  3. Podocytes—Attached to a parietal layer of Bowman’s capsule.
  4. JGA— A rise in glomerular blood pressure activates it to release renin

Choose The Correct Answer

  1. 3
  2. 2
  3. 1
  4. 4

Answer: 1. 3

Question 7. Identify the correct statement regarding urine formation.

  1. The countercurrent mechanism works around the glomerulus and PCT
  2. To prevent diuresis, ADH facilitates water reabsorption from the latter parts of the tubules
  3. Maximum absorption of electrolytes occurs in Henle’s loop
  4. A decrease in blood pressure can increase the glomerular filtration rate
  5. The collecting duct is impermeable to water and thus helps in diluting the urine

Answer: 2. To prevent diuresis, ADH facilitates water reabsorption from the latter parts of the tubules

Question 8. The accumulation of urea in the blood due to malfunctioning of kidneys is referred to as—

  1. Ureamia
  2. Renal calculi
  3. Edema
  4. Glomerulonephritis

Answer: 1. Ureamia

Class 11 biology excretory products and their elimination MCQ with solutions

Question 9. What are the components of the ornithine cycle?

  1. Ornithine, citrulline, and alanine
  2. Ornithine, citrulline, and arginine
  3. Ornithine, alanine and fumaric acid
  4. Ornithine, citrulline and fumaric acid

Answer: 2. Ornithine, citrulline and arginine

Question 10. Which of the following causes a decrease in blood pressure?

  1. Renin
  2. Angiotensin
  3. ANF
  4. None of these

Answer: 3. ANF

Question 11. Which blood vessel in mammals normally carries the maximum amount of urea?

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

Answer: 2. Hepatic vein

Important MCQs on excretory products and their elimination for competitive exams

Question 12. Which segment of the renal tubule is permeable to water but nearly impermeable to salts?

  1. Descending limb of Henle’s loop
  2. Proximal convoluted tubule
  3. Ascending limb of Henle’s loop
  4. Distal convoluted tubule

Answer: 1. Descending limb of Henle’s loop

Question 13. Assertion (A): The regulation of RBC production is accompanied by the kidneys.

  1. Reason (R): Erythropoietin hormone circulates to the red bone marrow, where it increases stem cell mitosis and speeds up the development of RBCs.
  2. Both A and R are correct and R is the correct explanation of A
  3. Both A and R are correct, but R is not the correct explanation of A
  4. A is correct, but R is incorrect
  5. Both A and R are incorrect

Answer: 1. Reason (R): Erythropoietin hormone circulates to the red bone marrow, where it increases stem cell mitosis and speeds up the development of RBCs.

Question 14. What is glycosuria?

  1. A low amount of sugar in the urine
  2. Low amount of fat in urine
  3. The average amount of carbohydrate
  4. The high amount of sugar in the urine

Answer: 4. High amount of sugar in urine

Excretory products and their elimination chapter MCQ with explanation

Question 15. The volume of urine is regulated by—

  1. Aldosterone
  2. Aldosterone and testosterone
  3. ADH
  4. Aldosterone and ADH

Answer: 4. Aldosterone and ADH

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