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11th Standard Zoology - Excretion English Medium Free Online Test One Mark Questions 2020 - 2021

11th Standard

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Zoology

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  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. A person who is on a long hunger strike and is , surviving only on water, will have

    (a)

    Less amino acids in his urine

    (b)

    Macula densa cells

    (c)

    Less urea in his urine

    (d)

    More sodium in his urine

  3. Aldosterone acts at the distal convoluted tubule and collecting duct resulting in the absorption of water through

    (a)

    Aquaporins

    (b)

    Spectrins

    (c)

    GLUT

    (d)

    Chloride channels

  4. Malpighian tubules remove excretory products from

    (a)

    mouth

    (b)

    oesophagus

    (c)

    haemolymph

    (d)

    alimentary canal.

  5. ____________is not a waste product.

    (a)

    Guanine

    (b)

    Creatinine

    (c)

    Urea

    (d)

    Ribose

  6. The ureter, blood vessels enter the kidney through_____________

    (a)

    Hilum

    (b)

    Renal columns of Bertini

    (c)

    Hilus

    (d)

    Renal pelvis

  7. Assertion (A): The decending limb of Henle's loop is permeable to water.
    Reason (R): Aquaporins are the facilitators for water permeability.

    (a)

    A and R are wrong

    (b)

    R does not explain A

    (c)

    R explains A

    (d)

    A is right R is wrong

  8. Countercurrent multiplier mechanism is possible because of the presence of_______________

    (a)

    Nephron

    (b)

    Collecting duct

    (c)

    Bowman's Capsule

    (d)

    Henle's Loop

  9. Which is not a waste product?

    (a)

    Guanine

    (b)

    Creatinine

    (c)

    Urea

    (d)

    Ribose

  10. Which is not a excretory organ?

    (a)

    Kidney

    (b)

    Lungs

    (c)

    Heart

    (d)

    Liver

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