Assertion :Yeasts such and Saccharomyces cerevisiae are used in baking industry. Reason: Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The yeast breaks sugar down into carbon dioxide and water. Enzymes present in yeast and flour also help to speed up this reaction. Alcohol and carbon dioxide are produced in this process known as alcoholic fermentation. The carbon dioxide produced in these reactions causes the dough to rise (ferment or prove), and the alcohol produced mostly evaporates from the dough during the baking process.

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