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Which of the following statement is corr...

Which of the following statement is correct?

A

Aspergillus niger is used for formation of acetic acid

B

Activated sludge is digested by aerobic bacteria to produce marsh gas

C

Flemming, Chain `&` Florey wre awarded with nobel prize for discovery of penicillin

D

BOD is amount of oxygen produced by bacteria on decomposition.

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ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-EXERCISE-II
  1. Monarch Butterfly noteaten by predators because of

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  2. In vehicles, catalytic convertors are used:-

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  3. Which of the following statement is correct?

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  4. Which of the following is a method of gene transfer ?

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  5. Which one of the following statements regarding photochemical smog is ...

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  6. Which one of the following areas in India is a hotspot of biodiversity...

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  7. Which one of the following is not a functional unit of an ecosystem

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  8. The upright pyramid of number is absent in

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  9. Which one of the following is not a gaseous biogeochemical cycle in ec...

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  10. Which one of the following is a wrong statement?

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  11. The highest number of species in the world is represented by

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  12. Given below is an imaginary pyramid of numbers. What could be one of t...

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  13. Identify the possible link ''A'' in the following food chain Plant ...

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  14. Measuring Biochemical Oxygen Demand (BOD) is a method used for

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  15. People who have migrated from the planes to an area adjoining Rohta...

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  16. The second stage of hydrosere is occupied by plants like

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  17. Identify the likely organisms (A), (B), (C ) and (D) in the food web s...

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  18. in gobar gas ,the maximum amount is of

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  19. Select the correct statement about biodiversity.

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  20. Cuscuta is an example of a

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