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Question
The symbiotic nitrogen fixing bacterium in root nodules of legumes is
The symbiotic nitrogen fixing bacterium in root nodules of legumes is
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Solution
The correct option is D Rhizobium
Rhizobium fixes nitrogen in symbiotic association with roots of leguminous plants. Initially, the bacteria grow in soil near the roots of higher plants where they fail to fix the nitrogen. These bacteria when coming in contact with leguminous plants, interact chemically and enter into roots through root hairs, and fix nitrogen by symbiotic association. Thus, the correct answer is option C.
Rhizobium fixes nitrogen in symbiotic association with roots of leguminous plants. Initially, the bacteria grow in soil near the roots of higher plants where they fail to fix the nitrogen. These bacteria when coming in contact with leguminous plants, interact chemically and enter into roots through root hairs, and fix nitrogen by symbiotic association. Thus, the correct answer is option C.
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