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Standard XII
Biology
Bacteria
Define and ex...
Question
Define and explain:
manure fertilizer, biofertilizer, mycorrhiza diazotrophs, root nodule, Frankia, nitrogen fixation
..........
Organisms which can bring about soil nutrient enrichment.
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Solution
Manure - It is the natural material which is obtained by decaying plant and animal waste.
Fertilizer - It is an organic or inorganic compound rich in plant nutrients
Diazotrophs- These as bacteria that fix atmospheric nitrogen gas into a more usable form.
Mycorrhiza - It is a symbiotic relationship between fungal hyphae and roots of higher plants.
Root nodule- These are associated with symbiotic nitrogen fixation which occurs at roots.
Frankia-It is the genus of nitrogen-fixing bacteria which lives in symbiotic form.
Nitrogen-fixation- It is a process in which the atmospheric nitrogen is converted into ammonia.
'Bioferilizer organisms which can bring about soil nutrient enrichment'.
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1.Manure fertilizer, biofertilizer, mycorrhiza, diazotrophs, root nodule, Frankia, nitrogen fixation
2. .......... is an Inorganic, or organic compounds rich in plant nutrients.
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Define and explain
manure fertilizer, biofertilizer, mycorrhiza, diazotrophs, root nodule, Frankia, nitrogen fixation
..........
Organic substances obtained by the decomposition of animal wastes and plant residues which supply essential elements and humus to the soil.
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Biofertilizers are organisms which can bring about soil nutrient enrichment.
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Organisms which can bring about soil nutrient enrichment are known
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Assertion :Organic farming is very beneficial for farmers to increase crop production. Reason: Bacteria, fungi, mycorrhiza, cyanobacteria are better biofertilizer which fixes nitrogen and increase soil fertility.
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