Chapter Exam

Chapter 7: Human Health and Diseases — Online MCQ Test

Q: Which of the following is a bacterial disease?

Answer: C. Typhoid — Typhoid is caused by the bacterium Salmonella typhi. The other diseases are caused by a protozoan or viruses.

Q: The vector responsible for transmitting malaria is the ______.

Answer: A. female Anopheles mosquito — Malaria is transmitted by the bite of the female Anopheles mosquito. It carries the Plasmodium parasite from one person to another.

Q: Which of the following is a correct match?

Answer: C. Tuberculosis - Mycobacterium tuberculosis — Tuberculosis is caused by Mycobacterium tuberculosis. The other options are mismatched with their causative agents.

Q: In HIV infection, which of the following cells is primarily affected?

Answer: B. Helper T-lymphocytes — HIV primarily attacks Helper T-lymphocytes (CD4 cells), weakening the immune system. This makes the person vulnerable to opportunistic infections.

Q: A person uses narcotic drugs repeatedly and becomes unable to function normally without them. This condition is best termed

Answer: C. drug dependence — Drug dependence is the state in which a person requires the drug to feel normal and may experience withdrawal symptoms without it. It is a major feature of drug abuse.

ZOOLOGY · CLASS 12th · Tamil Nadu State Board

Practice Chapter 7: Human Health and Diseases with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 12th ZOOLOGY. This chapter covers: Exploring human pathology this chapter covers infectious diseases caused by bacteria viruses protozoa and fungi alongside lifestyle disorders cancer mechanics and drug abuse.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 7: Human Health and Diseases — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 12th ZOOLOGY — Chapter 7: Human Health and Diseases, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a bacterial disease?

A. Malaria
B. Dengue
C. Typhoid ✓
D. Amoebiasis

Answer: C. Typhoid
Typhoid is caused by the bacterium Salmonella typhi. The other diseases are caused by a protozoan or viruses.

The vector responsible for transmitting malaria is the ______.

A. female Anopheles mosquito ✓
B. male Culex mosquito
C. housefly
D. bedbug

Answer: A. female Anopheles mosquito
Malaria is transmitted by the bite of the female Anopheles mosquito. It carries the Plasmodium parasite from one person to another.

Which of the following is a correct match?

A. AIDS - Plasmodium
B. Dengue - Bacterium
C. Tuberculosis - Mycobacterium tuberculosis ✓
D. Ringworm - Virus

Answer: C. Tuberculosis - Mycobacterium tuberculosis
Tuberculosis is caused by Mycobacterium tuberculosis. The other options are mismatched with their causative agents.

In HIV infection, which of the following cells is primarily affected?

A. Red blood cells
B. Helper T-lymphocytes ✓
C. Platelets
D. Neurons

Answer: B. Helper T-lymphocytes
HIV primarily attacks Helper T-lymphocytes (CD4 cells), weakening the immune system. This makes the person vulnerable to opportunistic infections.

A person uses narcotic drugs repeatedly and becomes unable to function normally without them. This condition is best termed

A. immunity
B. tolerance only
C. drug dependence ✓
D. vaccination

Answer: C. drug dependence
Drug dependence is the state in which a person requires the drug to feel normal and may experience withdrawal symptoms without it. It is a major feature of drug abuse.

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