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  1. Trophic levels are formed by

    2. A.

     Only plants
    B.

     only animals
    C.

     Only carnivorous
    D.

     Organisms linked in food chain

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  2. The drug morphine is extracted from _______ plant.

    3. A.

     Cocoa
    B.

     Belladonna
    C.

     Opium Poppy
    D.

     Tannin

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  3. Producers are otherwise known as

    4. A.

     Organisms
    B.

     Manufacturers
    C.

     Organic compounds
    D.

     Autotrophs

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  4. Decomposers are otherwise called as

    5. A.

     Detritivores
    B.

     Primary consumers
    C.

     Organic matter
    D.

     Secondary consumers

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  5. The pollution which does not persistent harm to life supporting system is

    6. A.

     Noise pollution
    B.

     Radiation pollution
    C.

     Organochlorine pollution
    D.

     All of these

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  6. The response of predator to prey and vice-versa, over ten of thousands of years, produces physical and behavioral changes in a process called

    7. A.

     Co-evolution
    B.

     Evolution
    C.

     Origin
    D.

     Development

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  7. The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:

    8. A.

     The earth is closer to the sun in January
    B.

     The earth is farther from the sun in July
    C.

     Over 80% of the Southern Hemisphere is covered with water
    D.

     The sun's energy is less intense in the Southern Hemisphere

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  8. The most important reason for decrease in biodiversity is

    9. A.

     Habitat pollution
    B.

     Introduction of exotic species
    C.

     Over-exploitation
    D.

     Habitat destruction

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  9. Soil erosion can be prevented by

    10. A.

     Deforestation
    B.

     Afforestation
    C.

     Overgrazing
    D.

     Removal of vegetation

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  10. ____________ is one of the most endangered species of Indian birds

    11. A.

     Bee eater
    B.

     Paradise fly catcher
    C.

     Owl
    D.

     The great Indian bustard

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