Q.1. Lactobacillus is
A. An algae
B. A fungi
C. A protozoa
D. A bacteria
Click here for answer
D. A bacteria
Q.2 Vaccine for small pox is discorvered by
A. Louis Pasteur
B. Alexander Fleming
C. Edward Jenner
D. John Mendal
Click here for answer
C. Edward Jenner
Q.3 Amount of nitrogen in the atmosohere is
A. 58%
B. 68%
C. 78%
D. 88%
Click here for answer
C. 78%
Q.4 The process of conversion of sugar into alcohol is called
A. Nitrogen fixation
B. Moulding
C. Fermentation
D. Infection
Click here for answer
C. Fermentation
Q.5 Mushroom belongs to
A. Algae
B. Virus
C. Fungi
D. None of these
Click here for answer
C. Fungi
Q.6 Scientist who discovered fermentation is
A. Alexander Fleming
B. Louis Pasteur
C. John Mendal
D. Edward Jenner
Click here for answer
B. Louis Pasteur
Q.7 The bread or idli dough rises because of
A. Heat
B. Grinding
C.Growth of yeast cells
D. Kneading
Click here for answer
C.Growth of yeast cells
Q.8 Rhizobium becteria
A. Help in digestion
B. Help in nitrogen fixation
C. Cause diseases
D. All of the above
Click here for answer
B. Help in nitrogen fixation
Q.9 Malaria is caused by
A.Protozoa
B. Virus
C. Algae
D. Bacteria
Click here for answer
A.Protozoa
Q.10 Penicillium is a
A. Algae
B. Fungus
C. Bacteria
D. Yeast
Click here for answer
B. Fungus
Q.11 Microorganisms are
A. Unicellular
B. Multi-cellular
C. Both
D. None of these
Click here for answer
B. Multi-cellular
Q.12 Blue green algae fix __________ to enhance fertility of soil
A. Nitrogen
B. Oxygen.
C. Humus
D. Nutrients
Click here for answer
A. Nitrogen
Q.13 Alcohol is produced with the help of __________.
A. Yeast
B. Rhizobium
C. Spirogyra
D. Lactobacillius
Click here for answer
A. Yeast
Q.14 Cholera is caused by __________.
A. Bacteria.
B. Fungi
C. Protozoa.
D. Virus
Click here for answer
A. Bacteria.
Q.15 The following is an antibiotic
A. Sodium bicarbonate
B. Streptomycin
C. Alcohol
D. Yeast
Click here for answer
B. Streptomycin
Q.16 Carrier of malaria-causing protozoan is
A. Female Anopheles mosquito
B. Female Aedes mosquito
C. Housefly
D. Butterfly
Click here for answer
A. Female Anopheles mosquito
Q.17 The most common carrier of communicable diseases is
A. Ant
B. Housefly
C. Dragonfly
D. Spider
Click here for answer
B. Housefly
Q.18 Match the organisms in Column I with their action in Column II.
Column I Column II
(i) Bacteria (a) Fixing Nitrogen
(ii) Rhizobium (b) Setting of curd
(iii) Lactobacillus (c) Baking of bread
(iv) Yeast (d) Causing Malaria
(v) A protozoan (e) Causing Cholera
(vi) A Virus (f) Causing AIDS
(g) Producing antibodies
A. i-b, ii-d, iii-a, iv-c, v-f, vi-e
B. i-b, ii-f, iii-a, iv-c, v-g, vi-e
C. i-e, ii-a, iii-b, iv-c, v-d, vi-f
D. i-b, ii-g, iii-a, iv-c, v-f, vi-e
Click here for answer
C. i-e, ii-a, iii-b, iv-c, v-d, vi-f
MICRO ORGANISMS - FRIEND AND FOE - PART I
MICRO ORGANISMS - FRIEND AND FOE - PART II
need more feed on reproduction
ReplyDelete