2.4 MULTIPLE CHOICE QUESTIONS:(MCQ’s)
1. _____ are also microscopic but are not considered as micro organisms.
a) Bacteria b) Virus c) Germs d) Amoebas
2. ____ are green substance floating on the surface of a pond, lakes and river.
a) Algae b) Lichens c) Moss d) Penicillus Shrubs
3. ______ bacteria found in nodules of legume plants.
a) E Coli b) Bacterium c) Rhizobium d) Leguminous
4. Carbon dioxide produced in the process of _______.
a) Oxidation b) Decantation c) Filteration d) Fermentation
5. Some fungi like penicillium produce chemical substance called ________.
a) Antibiotics b) Antibodies c) Penicillus d) Vectors
6. The disease causing microorganisms are called ______.
a) Pathogens b) Halogens c) Bacteria d) Virus
7. To save the food from the attack of microorganisms we use some chemical called ________.
a) Pickle b) Preservatives c) Solvents d) Salt
8. The conversion of sugar into alcohol is called ________.
a) Preservation b) Decomposition c) Fermentation d) Esterification
9. It is a dangerous, human and cattle disease caused by _________.
a) Blackleg b) Bloat c) Foot rot d) Anthrax
10. _______ cannot be seen with the naked eyes.
a) Flies b) Microorganisms c) Worms d) Fishes
11. Cociare ________ shaped bacteria.
a) Round – shaped b) L shaped c) Oval shaped d) B shaped
12. Spirogyra is ______.
a) An algae b) A Fungi c) A tree d) An animal
13. Malaria is caused by ______.
a) Germs b) Flies c) Protozoa d) Worms
14. Rhizobium bacteria _________.
a) fixes Oxygen b) Kill germs c) Helps growth d) Help in nitrogen fixation
15. Vaccine for small pox is discovered by _______.
a) Edward Jenner b) Dr J Bobbins c) B.Grillo d) Louis Pasteur
Answers :
1. b) 2. a) 3. c) 4. d) 5. a) 6. a) 7. b) 8. c)
9. d) 10. b) 11. a) 12. a) 13. c) 14. d) 15. a) .