The commonest living organism, which can respire in the absence of $O_{2}$ is

Fish

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Yeast

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Potato

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Chlorella

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Solution

The correct option is B Yeast
Respiration that involves the breakdown of food can also take place in the absence of oxygen. This process is known as Anaerobic respiration. It occurs in organisms such as yeast. This process leads to the production of alcohol and carbon dioxide.
Hence the correct answer is option B.

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