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Home › Biology › Human Excretory System

Human Excretory System — Biology Questions & Practice

Practise 10 Human Excretory System questions from Biology for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Human Excretory System — with answers

Try each question first, then open the answer. Explanations are included.

1. What are the primary organs of the human excretory system, responsible for filtering blood and producing urine?

  1. ASkin
  2. BLungs
  3. CLiver
  4. DKidneys
Show answer

Answer: D

The kidneys are the primary excretory organs, filtering blood to remove waste products and excess substances, forming urine.

2. What is the functional and structural unit of the kidney, where blood filtration occurs?

  1. AUreter
  2. BBladder
  3. CNephron
  4. DGlomerulus alone
Show answer

Answer: C

The nephron is the basic functional unit of the kidney; each kidney contains about a million nephrons that filter blood and form urine.

3. What is the network of tiny blood capillaries within the nephron where initial blood filtration occurs?

  1. ALoop of Henle
  2. BGlomerulus
  3. CBowman's capsule alone
  4. DCollecting duct
Show answer

Answer: B

The glomerulus is a tuft of capillaries within the nephron's Bowman's capsule, where blood is initially filtered under pressure.

4. What is the cup-shaped structure that surrounds the glomerulus and collects the filtrate?

  1. ABowman's capsule
  2. BCollecting duct
  3. CGlomerulus
  4. DLoop of Henle
Show answer

Answer: A

Bowman's capsule is the cup-shaped structure surrounding the glomerulus that collects the filtered fluid (filtrate).

5. What tube carries urine from each kidney to the urinary bladder?

  1. ARenal vein
  2. BUrethra
  3. CRenal artery
  4. DUreter
Show answer

Answer: D

The ureter is a muscular tube that carries urine from the kidney to the urinary bladder via peristaltic movements.

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