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Question
Fertility of paddy fields is improved by addition of
Fertility of paddy fields is improved by addition of
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Solution
The correct option is D Blue-Green Algae
- Blue green algae such as Nostoc , Anabaena etc are very good at fixing nitrogen in the soil. They grow in symbiotic association with the roots of plant forming a legume where nitrogen fixation for the plant takes place.
- Using blue green algae to provide the plant and the soil with nitrogen is an effective way of increasing production of plant along with soil fertility.
- The heterocyst present in the blue green algae bring about nitrogen fixation
- so, the correct answer is 'Blue-Green Algae'
- Blue green algae such as Nostoc , Anabaena etc are very good at fixing nitrogen in the soil. They grow in symbiotic association with the roots of plant forming a legume where nitrogen fixation for the plant takes place.
- Using blue green algae to provide the plant and the soil with nitrogen is an effective way of increasing production of plant along with soil fertility.
- The heterocyst present in the blue green algae bring about nitrogen fixation
- so, the correct answer is 'Blue-Green Algae'
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