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Microbes in Human Welfare. — Bio Zoology STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12Bio ZoologyMicrobes in Human Welfare.2 Marks
Question
Rhizobium is a bacteria but acts as bio-fertilization. How?
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Answer

Rhizobium is symbiotic nitrogen-fixing bacteria which infects the root nodules of leguminous plants and fixes free atmospheric nitrogen into organic forms.

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