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Question

Legume plants are important because they :

A
Help in nitrogen fixation.
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B
Do not help in nitrogen fixation.
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C
Increase the soil fertility.
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D
All of the above.
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Solution

The correct option is C Help in nitrogen fixation.
  • Legume plants have root nodules, which harbor nitrogen-fixing bacteria.
  • These bacteria convert atmospheric nitrogen (which cannot be used by plants) into biologically useful forms like nitrates and nitrites which can be taken up and used to make the required molecules.

Thus, the correct option is A.

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