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ICSE Class 10 Biology Question 7 of 11

The Excretory System — Question 4

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Question

Question 4

Name the following:

(a) Three nitrogenous wastes of our body.

(b) Three organic wastes of our body.

(c) Three inorganic wastes of our body.

(d) Three main parts of our urinary system.

(e) Six main parts of nephron.

(f) Three stages of urine formation.

(g) Three types of fluids in different parts of a nephron.

Answer

(a) Three nitrogenous wastes of our body:

  1. Urea
  2. Uric acid
  3. Ammonia

(b) Three organic wastes of our body:

  1. Urea
  2. Uric acid
  3. Creatinine

(c) Three inorganic wastes of our body:

  1. Common salt (NaCl)
  2. Iron
  3. Calcium

(d) Three main parts of our urinary system:

  1. Kidney
  2. Urinary bladder
  3. Ureter

(e) Six main parts of nephron:

  1. Bowman's capsule
  2. Glomerulus
  3. Renal capsule
  4. Proximal convoluted tubule (PCT)
  5. Henle's Loop
  6. Distal convoluted tubule (DCT)

(f) Three stages of urine formation:

  1. Ultrafiltration
  2. Reabsorption
  3. Tubular secretion

(g) Three types of fluids in different parts of a nephron:

  1. Glomerular filtrate
  2. Glomerular filtrate with glucose and sodium
  3. Urine