Explore topic-wise MCQs in Biology.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following organ is also called as “Throne of Immunity”?

A. Bone Marrow
B. Thymus
C. Brain
D. Heart
Answer» C. Brain
2.

Which of the following organs is also called as “Graveyard of RBCs”?

A. Spleen
B. Heart
C. Bone Marrow
D. Liver
Answer» B. Heart
3.

MALT constitutes for about _______ percentage of the lymphoid tissue in the human body.

A. 30%
B. 40%
C. 50%
D. 60%
Answer» D. 60%
4.

In which of the following places MALT is not found?

A. Respiratory tract
B. Digestive tract
C. Urogenital tract
D. Eyes
Answer» E.
5.

Lymphoid Organs are not responsible for ___________

A. Proliferation of lymphocytes
B. Differentiation of lymphocytes
C. Destruction of lymphocytes
D. Maturation of lymphocytes
Answer» D. Maturation of lymphocytes
6.

Which of the following is not a cause of Immunodeficiency diseases?

A. Gene mutation
B. Infection
C. Accident
D. Shortage of water in the body
Answer» E.
7.

What is the full form of SCID?

A. Severe Combined Immunodeficiency
B. Sarcolemma Infected Disease
C. Septic Infectious diseases
D. Seven Convoluted Immunity disorder
Answer» B. Sarcolemma Infected Disease
8.

Immunosuppressants are chemicals which enhance the immune system of the body.

A. True
B. False
Answer» C.
9.

Which one of the following people are given the highest priority in transplanting organs to a donor?

A. Identical twin
B. Sibling
C. Parent
D. Unrelated donor
Answer» B. Sibling
10.

Which of the following is an immunosuppressant drug?

A. Antihistamine
B. Cyclosporin
C. Neomycin
D. Streptokinase
Answer» C. Neomycin
11.

Which of the following immunoglobulins is also called secretory immunoglobulin?

A. IgG
B. IgA
C. IgM
D. IgE
Answer» C. IgM
12.

Formation of a large number of effector cells against a particular antigen is called ______

A. Mass replication
B. Clonal selection
C. Mass selection
D. Pure line selection
Answer» C. Mass selection
13.

Primary response of the body to an antigen is much stronger and intense that the Secondary response.

A. True
B. False
Answer» C.
14.

Which of the following is introduced during smallpox vaccination?

A. Antibodies
B. Antigens
C. Attenuated virus
D. WBCs
Answer» D. WBCs
15.

What is the life span of the memory B-cells of the immune system?

A. A few days
B. A few hours
C. A few years
D. A few years to whole life
Answer» E.