Chapter Exam

Chapter 8: Immunology — Online MCQ Test

Q: Which of the following is a part of the innate immune system?

Answer: B. Skin as a physical barrier — Skin is a first-line defence and belongs to innate immunity. It provides a physical barrier against pathogen entry.

Q: Antibodies are also called:

Answer: B. Immunoglobulins — Antibodies are glycoproteins produced by plasma cells and are known as immunoglobulins.

Q: In a patient with an autoimmune disorder, the immune system mainly:

Answer: B. Attacks the body's own cells and tissues — Autoimmune disorders occur when the immune system mistakenly recognizes self-tissues as foreign and attacks them.

ZOOLOGY · CLASS 12th · Tamil Nadu State Board

Practice Chapter 8: Immunology with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 12th ZOOLOGY. This chapter covers: This chapter investigates immune system components innate and adaptive immunity antigens antibodies hypersensitivity reactions autoimmune disorders and vaccine mechanisms.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 8: Immunology — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 12th ZOOLOGY — Chapter 8: Immunology, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a part of the innate immune system?

A. Antibody production
B. Skin as a physical barrier ✓
C. Memory cell formation
D. Specific antigen recognition by B cells

Answer: B. Skin as a physical barrier
Skin is a first-line defence and belongs to innate immunity. It provides a physical barrier against pathogen entry.

Antibodies are also called:

A. Antigens
B. Immunoglobulins ✓
C. Interferons
D. Lymphokines

Answer: B. Immunoglobulins
Antibodies are glycoproteins produced by plasma cells and are known as immunoglobulins.

Which of the following is an example of passive immunity?

A. Vaccination against polio
B. Antibodies received from mother through placenta ✓
C. Production of antibodies after infection
D. Formation of memory cells after disease

Answer: B. Antibodies received from mother through placenta
Passive immunity is obtained by receiving ready-made antibodies, such as maternal antibodies transferred through the placenta.

Which statement best distinguishes active immunity from passive immunity?

A. Active immunity is immediate but short-lived
B. Passive immunity is produced by the body after infection
C. Active immunity involves the body producing its own antibodies ✓
D. Passive immunity always forms memory cells

Answer: C. Active immunity involves the body producing its own antibodies
In active immunity, the body itself responds to an antigen and produces antibodies and memory cells.

In a patient with an autoimmune disorder, the immune system mainly:

A. Ignores all foreign substances
B. Attacks the body's own cells and tissues ✓
C. Produces only passive immunity
D. Fails to produce any antibodies at all

Answer: B. Attacks the body's own cells and tissues
Autoimmune disorders occur when the immune system mistakenly recognizes self-tissues as foreign and attacks them.