Which of the following plays an important role in nitrogen cycle?

Rhizopus

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Nitrobacter

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Mucor

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Spirogyra

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Solution

The correct option is B Nitrobacter
Nitrobacter plays an important role in the nitrogen cycle by oxidizing nitrite into nitrate in soil.
Unlike plants, where electron transfer in photosynthesis provides the energy for carbon fixation, Nitrobacter uses energy from the oxidation of nitrite ions,
NO $_{2}$ , into nitrate ions, NO $_{3}$ , to fulfill their energy needs.

Therefore, the correct answer is option B.

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