Question

Match the following.
$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \text{1. Penicillin}& \text{a. Bakery products}\\ \text{2. Sodium metabisulphite}& \text{b. Antibiotic}\\ \text{3.}Rhizobium& \text{c. Food preservative}\\ \text{4. Yeast}& \text{d. Nitrogen fixation}\end{array}$

• A. 1-a, 2-b, 3-d, 4-c
• B. 1-b, 2-c, 3-d, 4-a
• C. 1-c, 2-a, 3-b, 4-d
• D. 1-d, 2-a, 3-b, 4-c

Answer 1

The correct option is B 1-b, 2-c, 3-d, 4-a

$\bullet$ Penicillin was the first antibiotic discovered. It was obtained from a fungus called $Penicillium$.
$\bullet$ Sodium metabisulphite is a food preservative used in jams and squashes to stop or keep in check the excess growth of microbes.
$\bullet$ Rhizobium, found in root nodules of leguminous crops, fixes atmospheric nitrogen to usable nitrogenous compounds and supplies them to plants, providing nutrition.
$\bullet$ Yeast is a fungal microbe which when added to dough, reproduces rapidly and releases carbon dioxide during respiration. This leads to rising of dough and also makes the resulting bread soft in texture. Hence, yeast is used in bakery products.