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Which of the following statement is correct? |
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1) |
Cyanobacteria such as Anabaena and Nostoc are important mobilisers of phosphates and potassium for plant nutrition in soil |
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2) |
At present it is not possible to grow maize without chemical fertilisers |
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3) |
Extensive use of chemicals fertilisers may lead to eutrophication of nearby water bodies |
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4) |
Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants |
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Which of the following statement is correct? |
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|
1) |
Cyanobacteria such as Anabaena and Nostoc are important mobilisers of phosphates and potassium for plant nutrition in soil |
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2) |
At present it is not possible to grow maize without chemical fertilisers |
|
3) |
Extensive use of chemicals fertilisers may lead to eutrophication of nearby water bodies |
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4) |
Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants |
Excess fertilizer in the environment, especially nitrogen and phosphorus, can pollute local ground water as well as lakes and streams, resulting in eutrophication