Question

Suggest a suitable word for each of the following statements.
(c) Chemicals added to food to prevent the growth of microorganisms
(b) Nitrogen-fixing microorganism present in the root nodules of legumes.​

Answer 1

Answer:

(c) Chemicals added to food to prevent the growth of microorganisms - preservatives.

(b) Nitrogen-fixing microorganism present in the root nodules of legumes - rhizobium.

Explanation:

(c) Preservatives -

• Perservaties help is lengthing the life of food items.
• They are chemicals which are added to food to make them long lasting.
• Example - oil in pickles.

(b) Rhizobium -

• Rhizobium is grown in the root nodules of legumes.
• They convert gaseous nitrogen into solid state for legumes that require high amount of nitrogen.
• In return, the legumes gives other essential components to rhizobiums , leading to great coordination.