CBSE  /  Class 11  /  Biology  /  Excretory Products and their Elimination

  • 1. 
    pH of human urine is

  • 7. 0
  • 6. 5
  • 6. 0
  • 7. 5

  • 2. 
    Average blood filtered by kidneys per minute is

  • 1000 – 1500 mL
  • 500 – 600 mL
  • 200 – 300 mL
  • 1100 – 1200 mL

  • 3. 
    Kidneys are located in

  • thoracic cavity
  • abdominal cavity
  • body cavity
  • pelvic cavity

  • 4. 
    Which one of the following statements in regard to the excretion by the human kidneys is correct?

  • Ascending limb of Loop of Henle is impermeable to electrolytes
  • Descending limb of Loop of Henle is impermeable to water
  • Distal convoluted tubule is incapable of reabsorbing HCO
  • Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules

  • 5. 
    In the kidneys, osmotic pressure controls ______.

  • Glucose absorption
  • Sodium absorption
  • Water absorption
  • none of these

  • 6. 
    Presence of __________ in urine indicates diabetes mellitus.

  • Glucose
  • Cholesterol
  • Ketone bodies
  • Both 1 and 3

  • 7. 
    If a man takes large amount of protein, he is likely to excrete more amount of

  • Glucose
  • Urea and uric acid
  • Water
  • Salts

  • 8. 
    Nerves, blood vessels and ureter enters into the kidney through

  • calyces
  • hilum
  • capsule
  • cortex

  • 9. 
    The principal nitrogenous excretory compound in humans is synthesised

  • In the liver but eliminated mostly through kidneys
  • In kidneys but eliminated mostly through liver
  • In kidneys as well as eliminated by kidneys
  • In liver and also eliminated by the same through bile

  • 10. 
    The renal medulla consists of cone-shaped tissue masses called _______.

  • Renal pyramid
  • Adipose capsule
  • Renal cortex
  • Renal pelvis
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