Question

Pick the correct matches for all the microbes.
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ 1.Penicillium& \text{a. Bakery products}\\ 2.Clostridium& \text{b. Source of antibiotics}\\ 3.Rhizobium& \text{c. Food poisoning}\\ \text{4. Yeast}& \text{d. Nitrogen fixation}\end{array}$

• 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 is the first discovered antibiotic, obtained from a fungus called Penicillium.
$\bullet$ Clostridium is a harmful bacteria which multiplies in warm food under anaerobic conditions and results in spoiling the food.
$\bullet$ Rhizobium found in root nodules of leguminous crops, fixes atmospheric nitrogen to nitrogenous compounds and supplies them to plants, providing nutrition.
$\bullet$ Yeast is a fungal microbe which feeds on carbon compounds releasing alcohol and carbon dioxide gas. This gas makes the bread spongy. Hence, yeast is used in bakery products.