Home Biology Biological Classification All Topic Question For Revision Test Bacterial group which play a great role in r…
Biology Biological Classification All Topic Question For Revision Test Single Correct MCQ
Published on: August 12, 2026

Bacterial group which play a great role in recycling of nutrients-

A
Are photoautrotrophs
B
Oxidise organic substances
C
Release energy through oxidation of nitrates
D
Do not fix atmospheric nitrogen

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The correct answer is:
C

The bacterial group referred to in the question is chemosynthetic autotrophs (chemoautotrophs). These bacteria play a critical role in recycling nutrients like nitrogen, phosphorus, iron, and sulfur in the environment. They obtain the energy necessary for ATP production by oxidizing inorganic substances such as ammonia (NH 3 ), nitrites (NO 2 - ), and nitrates (NO 3 - ).

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