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11th Standard Zoology - Excretion English Medium Free Online Test One Mark Questions with Answer Key 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. If Henle's loop were absent from mammalian nephron, which one of the following is to be expected?

    (a)

    There will be no urine formation

    (b)

    There will be hardly any change in the quality : and quantity of urine formed

    (c)

    The urine will be more concentrated

    (d)

    The urine will be more dilute

  2. Glomerular filtrate contains

    (a)

    Blood without blood cells and proteins

    (b)

    Plasma without sugar

    (c)

    Blood with proteins but without cells

    (d)

    Blood without urea

  3. Animal requiring minimum amount of water to produce urine are

    (a)

    ureotelic

    (b)

    ammonotelic

    (c)

    uricotelic

    (d)

    chemotelic

  4. The hormone which helps in the reabsorption of water in kidney tubules is

    (a)

    cholecystokinin

    (b)

    angiotensin II

    (c)

    antidiuretic hormone

    (d)

    Pancreozymin

  5. ___________part of nephron has evolved to form hypertonic urine.

    (a)

    Glomerulus

    (b)

    Loop of Henle

    (c)

    Proximal convoluted tubule

    (d)

    Collecting duct

  6. The glomerular hydrostatic pressure is estimated to be______________

    (a)

    60 mm/ Hg

    (b)

    55 mm / Hg

    (c)

    110 mm / Hg

    (d)

    75 mm / Hg

  7. The major function of Henle's loop is to concentrate_____________

    (a)

    Na+ and Cl-

    (b)

    K+ ions

    (c)

    Na+ and K+ ions

    (d)

    Na- and CI+ ions

  8. Normal urea level in human blood is about_______________

    (a)

    20-23 gms / 100 mL

    (b)

    17-30 mg / 100 mL

    (c)

    17 - 25 gms / 100 mL

    (d)

    15- 25 mg / 100 mL

  9. ______________is not a excretory organ.

    (a)

    Kidney

    (b)

    Lungs

    (c)

    Heart

    (d)

    Liver

  10. Which part of nephron has evolved to form hypertonic urine?

    (a)

    Glomerulus

    (b)

    Loop of Henle

    (c)

    Proximal convoluted tubule

    (d)

    Collecting duct

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