Question

2. Suggest a suitable word for each of the following statements.
(a) Chemicals added to food to prevent growth of microorganisms.
(b) Nitrogen-fixing microorganism present in the root nodules of legumes.
(c) Agent which spreads pathogens from one place to another.
(d) Chemicals which kill or stop the growth of pathogens.​

Answer 1

Answer:

(a) food preservation

(b)Rhizobium bacteria

(c) bacteria

(d) antigen