Which of the following is a correct option with reference to pathogenic bacterial and DDT?

Bacteria can undergo multiplication and DDT is degraded by living cells.

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Bacteria can be degraded by living cells and DDT can not be degraded by living cells.

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Bacteria can undergo biological magnification and DDT can be degraded by living cells

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Bacteria can undergo biological magnification and DDT can not be degraded by living cells.

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Solution

The correct option is C Bacteria can be degraded by living cells and DDT can not be degraded by living cells.
Bacteria is a prokaryotic organism and biodegradable while DDT is a non biodegradable pollutant and undergo biological magnification.

Suggest Corrections

	Biodegradable pollutants	Non-biodegradable pollutants
(i)	These are the pollutants that can be easily degraded by micro-organisms.	These are the pollutants that can not be degraded into harmless materials.
(ii)	These can be used to produce energy (through biogas), compost, manure, etc.	These are difficult to manage as a natural method of degradation is absent.
(iii)	These usually do not enter biogeochemical cycles.	These become a part of rapid turnover in biogeochemical cycles.
(iv)	Examples: DDT, BHC, plastics, polyethylene, glass, etc.	Examples: Sewage, garbage, animal waste, etc.