Organisation of Life Book Back Questions

8th Standard EM

    Reg.No. :
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Science

Time : 00:45:00 Hrs
Total Marks : 30
    2 x 1 = 2
  1. Osmosis is the movement of water molecules from a ___________.

    (a)

    Higher concentration to a region of lower concentration.

    (b)

    Lower concentration to a region of higher concentration.

    (c)

    Both of these

    (d)

    None of these

  2. The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

    (a)

    Hypotonic

    (b)

    Hypertonic

    (c)

    Neutral

    (d)

    Acidic

  3. 3 x 1 = 3
  4. ___________ is a good example for anaerobic respiration.

    ()

    Yeast

  5. _______ nerve is located at the end of the eyes behind the retina.

    ()

    Optic

  6. The size of the cells are measured in units of __________.

    ()

    Micron

  7. 3 x 2 = 6
  8. Mention the function of ‘Alveoli’?

  9. Name the processes by which air enters and comes out of our lungs?

  10. Differentiate between Osmoconformers and Osmoregulators?

  11. 3 x 3 = 9
  12. Define Prokaryotic cell?

  13. Define Eukaryotic cell?

  14. Tabulate the difference between aerobic and an aerobic respiration.

  15. 2 x 5 = 10
  16. Differentiate between inhalation and exhalation.

  17. Explain about the types of metabolism with an example.

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