NEET BIOLOGY

BIOLOGY IN HUMAN WELFARE

IMPROVEMENT IN FOOD PRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Root nodules of leguminous Plants contain ____ that fixes atmospheric Nitrogen to enrich/replenish the soil
A
Anabaena
B
Mycorrhiza
C
Rhizobium
D
Azolla
Explanation: 

Detailed explanation-1: -Rhizobium is the symbiotic bacteria which lives in the root nodules of leguminous plants. It converts atmospheric nitrogen into ammonium with the help of nitrogenase enzyme.

Detailed explanation-2: -Legumes are able to form a symbiotic relationship with nitrogen-fixing soil bacteria called rhizobia. The result of this symbiosis is to form nodules on the plant root, within which the bacteria can convert atmospheric nitrogen into ammonia that can be used by the plant.

Detailed explanation-3: -Root-nodule bacteria (rhizobia) are of great importance for nitrogen acquisition through symbiotic nitrogen fixation in a wide variety of leguminous plants. These bacteria differ from most other soil microorganisms by taking dual forms, i.e. a free-living form in soils and a symbiotic form inside of host legumes.

Detailed explanation-4: -Rhizobia are nitrogen-fixing bacteria which invade root hairs of leguminous plants and induce, in a specific manner, the formation of root nodules in which they fix nitrogen.

Detailed explanation-5: -Leguminous family They contain symbiotic bacteria called rhizobia within the nodules, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants, and this helps to fertilize the soil.

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