If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

If the assertion is true but the reason is false

If both the assertion and reason are false (e) If the assertion is false but reason is true (i) Assertion : Yeasts such as saccharomyces cerevisiae are used in baking industry Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion. (ii) Assertion : The kneaded flour shows leavening. When yeast is added to it. Reason : Enzymes secreted by yeast cause leavening. (iii) Assertion : Extraction and purification of enzymes is laborious and expensive. Reason : Protein engineering can be used to produce enzymes at large scale. (iv) Assertion : Enzymes application in industry is enhanced by its immobilization. Reason : Immobilization provides protection to enzymes without affecting their activity.