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  4. An example of plant growth-promoting Gram-negative bacterium, which is pleiomorphic in nature is

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Q. An example of plant growth-promoting Gram-negative bacterium, which is pleiomorphic in nature is

NTA AbhyasNTA Abhyas 2022

Solution:

Rhizobium is the soil bacterium which is Gram-negative in nature and shows pleiomorphic structure. This is a rhizosphere bacterium involved in the formation of root nodules by getting associated with the roots of the leguminous plants.