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General Knowledge :: Environmental Science

  1. Mycorrhiza represents

  2. A.

     Symbiotic association between a fungus and liverworts

    B.

     Parasitic association between a fungus and an alga

    C.

     Parasitic association between a fungus and roots of plants

    D.

     Symbiotic association between a fungus and roots of higher plants


  3. Which of the following interactions will not promote co evolution?

  4. A.

     Commensalism

    B.

     Mutualism

    C.

     Parasitism

    D.

     Interspecific competition


  5. Earth summit was held in

  6. A.

     Stockholm in 1972

    B.

     Rio de Jeneiro in 1992

    C.

     Paris in 1992

    D.

     New York in 1972


  7. The unit of measurement of intensity of sound is in _________

  8. A.

     Decibels

    B.

     Lux

    C.

     Parsec

    D.

     Candela


  9. Which of the following spatial units is the largest in terms of scale?

  10. A.

     River segments

    B.

     Mesohabitats

    C.

     Patches

    D.

     River reaches


  11. Natural earthquakes are caused by __________

  12. A.

     Earth's crust

    B.

     Deep seas

    C.

     Peak mountains

    D.

     Forests


  13. Eutrophication results from

  14. A.

     Agricultural and sewage water

    B.

     Vehicle exhaust

    C.

     Pesticides

    D.

     Industrial effluents


  15. Organisms that feed upon other living organisms as a source of energy and nutrients are called as

  16. A.

     Producers

    B.

     Consumers

    C.

     Pests

    D.

     Decomposers


  17. Nuclear accidents mostly release radioactive __________ into the atmosphere

  18. A.

     Carbon

    B.

     Iodine

    C.

     Phosphorus

    D.

     Sulphur


  19. The presence of which is necessary for photosynthesis

  20. A.

     Chloroform

    B.

     Chlorophyll

    C.

     Phosphorus

    D.

     Polymer