(B) $Azolla pinnata$ is a small aquatic fern that has a symbiotic relationship with the nitrogen-fixing cyanobacterium $Anabaena azollae$. When used a

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(B) $Azolla pinnata$ is a small aquatic fern that has a symbiotic relationship with the nitrogen-fixing cyanobacterium $Anabaena azollae$. When used as a biofertilizer in rice fields,it provides a significant amount of nitrogen to the soil. Farmers have reported that the application of $Azolla$ can increase rice yields by over $50\%$ due to its nitrogen-fixing capabilities and its role as a green manure.

Class 12 Biology Microbes in Human Welfare Biofertilizer

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Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer?

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AIPMT 1998 All AIPMT

AIPMT 1999 All AIPMT

A
Mycorrhiza
B
Azolla pinnata
C
Cyanobacteria
D
Legume-Rhizobium symbiosis

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Class 12

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Chapter

Microbes in Human Welfare

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Biofertilizer

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Match the following columns correctly:
Column-$I$ Column-$II$
$(a)$ $Rhizobium$ $(i)$ $Mycorrhiza$
$(b)$ $Azospirillum$ $(ii)$ $Paddy$ $field$
$(c)$ $Glomus$ $fungi$ $(iii)$ $Leguminous$ $plants$
$(d)$ $Cyanobacteria$ $(iv)$ $Free-living$ $bacteria$

Medium

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Give scientific reasons: The pressure on the use of organic farming and biofertilizers has increased.

Easy

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Blue-green algae increase which of the following in the soil?

Medium

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How does mycorrhiza stimulate plant growth?

Medium

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Which fungus is taking part in the formation of mycorrhiza?

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Column-$I$	Column-$II$
$(a)$ $Rhizobium$	$(i)$ $Mycorrhiza$
$(b)$ $Azospirillum$	$(ii)$ $Paddy$ $field$
$(c)$ $Glomus$ $fungi$	$(iii)$ $Leguminous$ $plants$
$(d)$ $Cyanobacteria$	$(iv)$ $Free-living$ $bacteria$

Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer?

Similar Questions

Match the following columns correctly:Column-$I$Column-$II$$(a)$ $Rhizobium$$(i)$ $Mycorrhiza$$(b)$ $Azospirillum$$(ii)$ $Paddy$ $field$$(c)$ $Glomus$ $fungi$$(iii)$ $Leguminous$ $plants$$(d)$ $Cyanobacteria$$(iv)$ $Free-living$ $bacteria$

Give scientific reasons: The pressure on the use of organic farming and biofertilizers has increased.

Blue-green algae increase which of the following in the soil?

How does mycorrhiza stimulate plant growth?

Which fungus is taking part in the formation of mycorrhiza?

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Match the following columns correctly:
Column-$I$ Column-$II$
$(a)$ $Rhizobium$ $(i)$ $Mycorrhiza$
$(b)$ $Azospirillum$ $(ii)$ $Paddy$ $field$
$(c)$ $Glomus$ $fungi$ $(iii)$ $Leguminous$ $plants$
$(d)$ $Cyanobacteria$ $(iv)$ $Free-living$ $bacteria$