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  1. Example of a single celled organism.

  2. A.

     Algae

    B.

     Amoeba

    C.

     Paramaecium

    D.

     All of the above

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  3. Chlamydomonas prefers water rich in

  4. A.

     Ammonic compounds

    B.

     Uric acid compounds

    C.

     Sulphur compounds

    D.

     Urea compounds

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  5. The number of pyrenoids in a cell of Spirogyra is

  6. A.

     1

    B.

     2

    C.

     3-5

    D.

     Numerous

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  7. Nuclear membrane is absent in

  8. A.

     Volvox

    B.

     Penicillium

    C.

     Agaricus

    D.

     Nostoc

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  9. Microscopic organism which passively float on the surface of water is called

  10. A.

     Phytoplanktons

    B.

     Zooplanktons

    C.

     Both (a) and (b) both

    D.

     None to these

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  11. Which among the following does not have a cell wall?

  12. A.

     Euglena

    B.

     Paramecium

    C.

     Gonyaulax

    D.

     Mycoplasma

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  13. The ability to fix atmospheric nitrogen is found in the

  14. A.

     Leaves of some crop plants

    B.

     Some marine red algae

    C.

     Some blue-green algae

    D.

     Cholera

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  15. The number of chloroplasts in a cell of Spirogyra is

  16. A.

     1-4

    B.

     1-8

    C.

     1-14

    D.

     2-8

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  17. 'Pond silk' is the common name of

  18. A.

     Spongilla

    B.

     Chlorella

    C.

     Selaginella

    D.

     Spirogyra

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  19. Potato blight is caused by

  20. A.

     Penicillium

    B.

     Meningitis

    C.

     Smut

    D.

     Ringworm

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