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  1. Gaseous exchange takes place in leaves through tiny pores for the purpose of photosynthesis. What are these pores?

  2. A.

     Chloroplast

    B.

     Stomata

    C.

     Chlorophyl

    D.

     Vacuole

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  3. The photosynthesis occurs in the

  4. A.

     Day

    B.

     Night

    C.

     Day and Night

    D.

     None of these

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  5. The oxygen released during photosynthesis process comes from

  6. A.

     H2O

    B.

     CO2

    C.

     NO2

    D.

     Glucose

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  7. In plants, photosynthesis mainly occurs in the

  8. A.

     Leaves

    B.

     Flowers

    C.

     Root

    D.

     Bark

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  9. Which one is important in photosynthesis to allows plants to absorb energy from light?

  10. A.

     Xanthophyll

    B.

     Carotene

    C.

     Chlorophyll

    D.

     Phaeophytin

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  11. Photosynthesis occurs in

  12. A.

     Nucleus

    B.

     Mitochondria

    C.

     Chloroplast

    D.

     Peroxisome

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  13. Sulphur Dioxide pollution is indicated by an excessive growth of which of the following?

  14. A.

     Algal Blooms

    B.

     Lichens

    C.

     Bryophytes

    D.

     Protozoa

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  15. Food wrapped in news paper is likely to get contaminated by

  16. A.

     Magnesium

    B.

     Alluminium

    C.

     Lead

    D.

     Copper

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  17. What is full form of BOD?

  18. A.

     Biological Oxygen Deficit

    B.

     Biological Oxygen Difference

    C.

     Biological Oxygen Demand

    D.

     Biological Oxygen Distribution

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  19. The non-biotic pollutant of underground water is

  20. A.

     Bacteria

    B.

     Algae

    C.

     Arsenic

    D.

     Viruses

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