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[A] : UV irradiation to disinfect pollu...

[A] : UV irradiation to disinfect polluted waters is not generally recommended .
[R] : It is not effective against most microorganisms

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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Explain five effects of water pollution.

Explain five effects of water pollution.

[A] : Population density of indicator organisms show degree of water pollution . [R] : BOD is an index of organic waste in water .

[A] : Biomonitoring is reliable for determining the pollutants in air , water and soil . [R] : The living organism reacts to minute changes in the environment .

[A] : Biomonitoring is reliable for determing the pollutants in air , water and soil . [R] : The living organism reacts to minute changes in the environment .

[A] : Algal blooms deplete dissolved O_(2) levels in polluted water bodies . [R] : Bioproductivity of water bodies increases due to algal blooms .

[A] : An estimation of B.O.D gives an indication of the amount of pollution in a body of water . [R] : B.O.D is measure of the oxygen requirements of the bacteria , which are living in the water .

TRUEMAN BIOLOGY-Ecology -ASSERTION AND REASON
  1. [A] : Biological indicators enhance usefulness of ecology to mankind ...

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  2. [A] : Depletion of ozone layer results in human disease like cancer ....

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  3. [A] : UV irradiation to disinfect polluted waters is not generally re...

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  4. [A] : A species is an interbreeding population which is reproductively...

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  5. [A] : Plants having capacity to withstand wide range of temperature t...

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  6. [A] : Each food-level in an ecosystem is called trophic level . [R]...

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  7. [A] : Biomonitoring is reliable for determing the pollutants in air ,...

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  8. Assertion (A) : Tropical rain forests are disappearing fast from devel...

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  9. [A] : Leaf butterfly & stick insect show mimicry to dodge their enemi...

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  10. [A] : In a food chain , membrane of successive higher levels are fewer...

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  11. Assertion (A) : Methane component of greenhouse gases contributing to ...

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  12. Assertion: Suspended particulate matter(SPM) is an important pollutant...

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  13. Assertion : Age sex structure of human population in countries like Fr...

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  14. Assertion (A) : Presently, the global atmosphere is warming up. Reas...

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  15. [A] : Ozone depletion at the south pole will threats world's fisheries...

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  16. [A] : Inquilines can not survive without human care . [R] : Cultige...

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  17. [A] : Problems of ecological environment arise from over population....

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  18. [A] : Social forestry programme is grows trees for fuel , fodder & fru...

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  19. [A] : Cultigens (domesticated animals & cultivated plants ) are not in...

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  20. [A] : Population density of indicator organisms show degree of water p...

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