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Question

Which of the following statement/s hold true in case of Rhizobium?

A
They live in the root nodules of leguminous crops.
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B
They help in the process of nitrogen fixation.
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C
They can reduce the dependency and expenses on fertilisers.
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D
They are oval cells and reproduce by budding.
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Solution

The correct options are
A They live in the root nodules of leguminous crops.
B They help in the process of nitrogen fixation.
C They can reduce the dependency and expenses on fertilisers.
Rhizobium lives in root nodules of leguminous plants and is in a symbiotic relationship with them. It supplies them with nitrogenous compounds through nitrogen fixation. In return it receives energy in the form of carbohydrates. In this way they enter plantlets and increase the supply of nitrogen to them. It reduces dependency on fertilisers. They reproduce asexually by fission.

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