Bio - Zoology - Excretion Book Back Questions

11th Standard

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Biology

Time : 00:40:00 Hrs
Total Marks : 25
    4 x 1 = 4
  1. Concentration of urine depends upon which part of the nephron

    (a)

    Bowman's capsule

    (b)

    Length of Henle's loop

    (c)

    P.C.T.

    (d)

    Network of capillaries arising from glomerulus

  2. The end product of Ornithine cycle is

    (a)

    carbon dioxide

    (b)

    uric acid

    (c)

    urea

    (d)

    ammonia

  3. Kidney stones are produced due to deposition of uric acid and

    (a)

    Silicates

    (b)

    Minerals

    (c)

    Calcium carbonate

    (d)

    Calcium oxalate

  4. Malpighian tubules remove excretory products from

    (a)

    mouth

    (b)

    oesophagus

    (c)

    haemolymph

    (d)

    alimentary canal.

  5. 2 x 2 = 4
  6. Differentiate cortical from medullary nephrons

  7. Name the three main hormones that are involved in the regulation of the renal function?

  8. 4 x 3 = 12
  9. What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?

  10. What solute is normally present in the body to estimate GFR in humans?

  11. Differentiate protonephridia from metanephridia

  12. How is urea formed in the human body?

  13. 1 x 5 = 5
  14. What is the function of antidiuretic hormone? Where is it produced and what stimuli increases or decreases its secretion?

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