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Which of the following is correct for se...

`Which of the following is correct for sewage discharge in a river?

A

At the discharge point BOD is high and fishes die

B

At the discharge DO is high

C

BOD increases downstream in river

D

From the discharge 50km away, fishes die.

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ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-EXERCISE-II
  1. Which of the following is not an exotic invading species?

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  2. How many of the following statements are CORRECT ? I. India is one o...

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  3. Which of the following is correct for sewage discharge in a river?

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  4. An example of ex situ conservation is

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  5. A location with luxuriant growth of lichens on the trees indicates tha...

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  6. A species facing extremely of ex- tinction in the immediate future 1s ...

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  7. The zone of atmosphere in which the ozone layer is present is called: ...

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  8. The organization which publishes the Red List species is

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  9. What gases are produced in anaerobic sludge digesters?

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  10. Just as a person moving from Delhi to Shimla. escape the heat for the ...

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  11. Given below is a simplified model of phos- phorus cycling in a terrest...

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  12. Given below is the representation of the extent of global diversity of...

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  13. A scrubber in the exhaust of a chemical in dustrial plant removes

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  14. If 20J of energy is trapped at producer level, then how much energy wi...

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  15. Which of the following is true-

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  16. Which one of the following shows a pyramid of biomass in a pond ecosys...

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  17. Which one of the following is an example of mutualism ?

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  18. Which of the following is true:-

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  19. Cryopreservation of gametes of threatened species in viable and fertil...

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  20. High value of BOD (Biochemical Oxygen Demand) indicates that

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