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Question-1 Which of the following diseases is not caused by virus ?

(A) Chicken pox	(B)Hepatitis B
(C)Measles	(D)Typhoid

Question-2 Vaccines are not available against which of the following diseases ?

(A) Small pox	(B)Hepatitis B
(C)Measles	(D)Malaria

Question-3 ...........i........... and ...........ii.......... are used for the production of antibiotics. The information in which row completes the given statement?

(A) i - Bacteria; ii - fungi	(B)i - Fungi; ii- protozoan
(C)i- Protozoan; ii- algae	(D)i- Algae; ii- bacteria

Question-4
A person is suffering from cholera. The disease causing bacterium is transmitted by

(A) Air	(B) Water
(C) Vector	(D) Contact

Question-5 Which of the following micro organisms convert nitrogenous waste into nitrogen compound ?

(A) Bacteria and fungi	(B)Fungi and protozoan
(C)Protozoan and algae	(D)Algae and bacteria

Question-6 Which of the following diseases can be transmitted by air?

(A) Measles	(B)Cholera
(C)Typhoid	(D)Malaria

Question-7 Air borne diseases cannot be prevented by

(A) Taking vaccination.	(B)Isolating patient's belongings
(C)Keeping patients in isolation	(D)By spraying insecticide in one's surrounding.

Question-8 The .........i........... Anopheles mosquito transmits ...........i........... through its bite. Which information completes the given statement ?

(A) i- Female; ii- Trypanosoma	(B)i- Male; ii - Plasmodium
(C)i- Male; ii - Trypanosoma	(D)I -Female; ii - Plasmodium

Question-9
The given table shows the microorganism and their category.

Category Bacteria fungi Algae Protozoan

Microorganisms i ii iii iv

Which information completes the given table?

(A) i- Streptococcus; ii- Rhizopus; iii- Spirogyra; iv- Entamoeba.	(B) i- Entamoeba; ii-Streptococcus ; iii- Rhizopus; iv- Spirogyra.
(C) i- Spirogyra; ii- Entamoeba ; iii- Streptococcus; iv- Rhizopus.	(D) i- Rhizopus; ii- Spirogyra ; iii- Entamoeba; iv- Streptococcus.

Question-10 Foot and mouth disease of cattle is caused by

(A) Bacterium	(B)Virus
(C)Fungi	(D)Protozoan

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Std 8

CBSE

Practice in Related Chapters
Reproduction in Animals
Microorganisms: Friend and Foe
Reaching the Age of Adolescence
Cell - Structure and Functions
Conservation of Plants and Animals
Crop Production & Management

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