What do you mean by harmful bacteria?

Important Questions on Immunity and Human Diseases

MEDIUM

9th West Bengal Board

IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 13 - Immunity and Human Diseases>EXERCISE>Q 3

Name three diseases caused by blood transfusion. Write about the symptoms of the disease caused by Human Immunodeficiency Virus.

MEDIUM

9th West Bengal Board

IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 13 - Immunity and Human Diseases>EXERCISE>Q 4

What is vaccination? State the uses of vaccination.

EASY

9th West Bengal Board

IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 13 - Immunity and Human Diseases>EXERCISE>Q 1

Draw and label a bacteriophage.

EASY

9th West Bengal Board

IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 13 - Immunity and Human Diseases>EXERCISE>Q 2

Draw a typical bacterial cell.

EASY

9th West Bengal Board

IMPORTANT

A TEXT BOOK OF LIFE SCIENCE AND ENVIRONMENT CLASS 9>Chapter 13 - Immunity and Human Diseases>EXERCISE>Q 3

Draw and label the harmful protozoa Entamoeba histolytica.