Alcohol can be converted into vinegar by the action of micro-organisms called:

(a) viruses (b) yeast (c) protozoa (d) bacteria

Q. Micro organisms include
(a) bacteria (b) viruses (c) protozoa (d) algae

Q.

The micro-organisums which can reproduce and multiply only inside the cells of other organisms are :

(a) protozoa (b) fungi (c) bacteria (d) viruses

Q. Question 4
The two micro-organisms which live in symbiotic association in lichens are

(a) fungus and protozoa
(b) alga and bacteria
(c) bacteria and protozoa
(d) alga and fungus

Q.

AIDS disease is caused by :

(a) bacteria (b) virus (c) worms (d) protozoa

Q.

Name any two (a) bacteria (b) viruses (c) protozoa (d) algae,and (e) fungi.