Which one of the following statements is correct?

Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies

Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants.

Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and for plant nutrition in soil.

At present it is not possible to grow maize without chemical fertilizers.

Solution

Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies

Eutrophication is caused by run off water from fertilized fields suburban lawns, feed lots and detergent rich sewage. It is phenomenon of nutrient enrichment of a water body.

Some More Questions From Environmental Issues Chapter

The meaning of BOD is :

Which of the following pollutants is not produced by exhaust of motor vehicles ?

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Environmental Issues

Some More Questions From Environmental Issues Chapter

The meaning of BOD is :

Which of the following pollutants is not produced by exhaust of motor vehicles ?

What is the term for the inflammation of cornea due to high absorption of UV-B radiation :

Smog is a mixture of :

WHO’s recommendations about the industrial noise limit is of :

Which of the atmospheric layer contains ozone layer ?

The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

What disease is caused due to consumption of fishes captured from water contaminated with mercury ?

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