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IMPORTANT
Earn 100

A legume having symbiotic association with two nitrogen fixing bacteria (Rhizobium and Aerorhizobium) is
(a)Crotalaria juncea
(b)Sesbania aculeata
(c)Sesbania rostrata
(d)Cyamopsis tetragonoloba

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Important Questions on Bioenergy, Biofertilizer and Biological Pest Control
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Cow dung is appropriately used as

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Biofertilizers include

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Mycorrhiza is a symbiotic association between

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Azolla enriches rice fields with nitrogen due to its association with
OR
A free-living nitrogen-fixing cyanobacteria which can also form a symbiotic association with the water fern Azolla is

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Rhizosphere is the region where:-

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An organism used as biofertilizer for raising soyabean crop is
Or
Most famous nitrogen fixing bacterium/biofertilizer is

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Aquatic fern which is an excellent biofertilizer

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Azolla is used as biofertilizer as it has
