AIPMT 2007 Biology Solved Paper

Question : 88 of 100

Marks: +1, -0

Which one of the following statements is correct?

At present it is not possible to grow maize without chemical fertilizers
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 potassium for plant nutrition in soil

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