Sign up

Teacher tutorials

Subject updates

Terms and Conditions

PDF chapter test TRY NOW

Subjects
Science CBSE
Class 8
Microorganisms - Friend and Foe
Helpful and diseasecausing microorganisms

25. Immunization and vaccination

Exercise condition:

4.5 m.

Choose the best answer:

1. Immunisation is a process by which

Antigens are administered to develop resistance from specific infectious agents.
Antibodies are administered
All the above

2. Why immunisation is prefered in modern medicine to strengthen the host defences against the spread of infection?

Because it is readily available in nature
Because it has more Vitamins and minerals
Because it can be easily administered via mouth
Because it is cost-effective

3. Who introduce the process of vaccination?

Edward Jenner
Louis Pasteur
Anton von Leeuwenhoek

Login or Fast registration

Previous exercise

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content

Copyright © 2026 YaClass Tech Private Limited Contacts Terms and Conditions Privacy Policy