WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

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Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases can serve as a valuable review tool before exams.

Immunity and Human Diseases Class 9 WBBSE MCQ Questions

Multiple Choice Questions :

Question 1.
The word ‘immunis’ means-
(A) Exempt
(B) Recovery
(C) Health
(D) Hygiene
Answer:
(A) Exempt

Question 2.
Which of the following is involved in immunity?
(A) Lymphocyte cells
(B) Plasma proteins
(C) Lymph and lymph gland
(D) All of these
Answer:
(D) All of these

Question 3.
Chemically antigen is a-
(A) Polysaccharide
(B) Lipoprotein
(C) Glycoprotein
(D) All of these
Answer:
(D) All of these

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 4.
Soil dwelling bacterium that enters into the body through broken skin or wound is-
(A) Corynebacterium diphtheriae
(B) Clostridium tetani
(C) Streptococcus pneumoniae
(D) All of these
Answer:
(B) Clostridium tetani

Question 5.
Which of the following is not an immunological response?
(A) Formation of antibody in response to antigen
(B) Monocytes killing germs by phagocytosis
(C) Antibody formation by vaccination
(D) Killing germs by antibiotic
Answer:
(D) Killing germs by antibiotic

Question 6.
Protection of body against common cold is –
(A) Innate immunity
(B) Acquired passive immunity
(C) Acquired active immunity
(D) None of these
Answer:
(A) Innate immunity

Question 7.
Immunity against chicken pox that is developed by a person after first infection from the same disease is –
(A) Innate immunity
(B) Active acquired immunity
(C) Passive acquired immunity
(D) None of these
Answer:
(B) Active acquired immunity

Question 8.
In B-cells ‘B’ indicates-
(A) B blood group
(B) B-agglutinogen
(C) Beta antibody
(D) Bursa fabricius
Answer:
(D) Bursa fabricius

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 9.
Cell-mediated response involves-
(A) Helper T-cells
(B) Plasma Cells
(C) Antibodies
(D) None of these
Answer:
(A) Helper T-cells

Question 10.
T-cells mature in-
(A) Bone marrow
(B) Blood
(C) Thymus gland
(D) Kidney
Answer:
(C) Thymus gland

Question 11.
Humoral response is related to-
(A) Ts-cells
(B) Tc-cells
(C) Antibodies
(D) None of these
Answer:
(C) Antibodies

Question 12.
Helper T-cells activate-
(A) Phagocytic macrophage
(B) Killer T-cells
(C) B-cells
(D) Both (b) & (c)
Answer:
(D) Both (b) & (c)

Question 13.
Which cells produce specific antibody to inactivate antigens?
(A) T-lymphocytes
(B) RBC
(C) Plasma cells
(D) Macrophages
Answer:
(C) Plasma cells

Question 14.
Active immunity develops within the body by-
(A) Inflow of antibodies from mother’s blood to foetal blood through placental circulation
(B) Blood transfusion
(C) Primary infection of any antigenic pathogen
(D) Direct injection of antibodies into the body
Answer:
(C) Primary infection of any antigenic pathogen

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 15.
Passive immunity develops within the body by-
(A) Direct injection of any attenuated germ
(B) Inflow of antibodies from mother to foetus through placental circulation
(C) Injection of a toxin, extracted from antigenic pathogen
(D) None of these
Answer:
(B) Inflow of antibodies from mother to foetus through placental circulation

Question 16.
Formation of antibody depends directly upon-
(A) Cytotoxic T-cells
(B) Helper T-cells
(C) Monocytes
(D) Plasma cells
Answer:
(D) Plasma cells

Question 17.
Memory cells, involved in immune response are formed by-
(A) Neutrophils
(B) Basophils
(C) Monocytes
(D) Lymphocytes
Answer:
(D) Lymphocytes

Question 18.
Memory cells are stored in-
(A) Brain
(B) Liver
(C) Spleen
(D) Kidney
Answer:
(C) Spleen

Question 19.
Cytotoxic T-cells kill-
(A) Healthy body cells
(B) Infected body cells
(C) Macrophages
(D) All of these
Answer:
(B) Infected body cells

Question 20.
An antiviral substance produced within a virus-infected cell to prevent proliferation and spreading of virus is-
(A) Antigen
(B) Antibody
(C) Interferon
(D) Toxin
Answer:
(C) Interferon

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 21.
Vaccine against small pox was first successfully applied by-
(A) Pasteur
(B) Koch
(C) Fleming
(D) Jenner
Answer:
(D) Jenner

Question 22.
Who is known as the father of immunology?
(A) Louis Pasteur
(B) Edward Jenner
(C) Alexander Fleming
(D) Robert Koch
Answer:
(B) Edward Jenner

Question 23.
Louis Pasteur was famous for-
(A) Invention of chicken pox vaccine
(B) Invention of rabies vaccine
(C) Invention of vaccination process
(D) Invention of immunization technique
Answer:
(B) Invention of rabies vaccine

Question 24.
The names of Sara Nelmes and James Phipps are related to-
(A) Small pox vaccine
(B) Chicken pox vaccine
(C) Cow pox vaccine
(D) Cholera vaccine
Answer:
(A) Small pox vaccine

Question 25.
The main immunoglobulin present in blood plasma is –
(A) IgA
(B) IgG
(C) IgM
(D) IgD
Answer:
(B) IgG

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 26.
The immunoglobulin, which reaches the body of neonates through colostrum is-
(A) IgA
(B) IgG
(C) IgM
(C) IgD
Answer:
(A) IgA

Question 27.
Which of the following is present on the cell membrane of mast cells and B-lymphocytes?
(A) IgE
(B) IgG
(C) IgM
(D) IgA
Answer:
(A) IgE

Question 28.
Select the correct option from the following-
(A) An IgG molecule has two antigen binding sites and one heavy and one light chain
(B) IgG molecule is composed of two light and two heavy chains
(C) An antigen-binding site of IgG is made up of two light chains
(D) An antigen-binding site of IgG is composed of two heavy chains
Answer:
(B) IgG molecule is composed of two light and two heavy chains

Question 29.
A disease, that has been completely eradicated by vaccination is –
(A) Diphtheria
(B) Small pox
(C) Chicken pox
(D) Polio
Answer:
(B) Small pox

Question 30.
Toxoid vaccine is applied to immunize the body against-
(A) Small pox
(B) Hepatitis B
(C) Diphtheria
(D) Cholera
Answer:
(C) Diphtheria

Question 31.
In attenuated vaccine-
(A) Dead germs are used
(B) Living but inactive germs are used
(C) Toxins from the germs are used
(D) Combination of bacteria and viruses are used
Answer:
(B) Living but inactive germs are used

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 32.
Killed germs are used to immunise against-
(A) Tetanus
(B) Plague
(C) Diphtheria
(D) All of these
Answer:
(B) Plague

Question 33.
DPT is a-
(A) Attenuated vaccine
(B) Inactive vaccine
(C) Toxoid
(D) Combination vaccine
Answer:
(D) Combination vaccine

Question 34.
Smail pox was deciared officially as an eradicated disease by WHO in the year-
(A) 1977
(B) 1978
(C) 1796
(D) 1980
Answer:
(D) 1980

Question 35.
DPT vaccine immunises babies against –
(A) Diarrhoea, Polio and Typhoid
(B) Diphtheria, Pertussis and Typhoid
(C) Diphtheria, Pertussis and Tuberculosis
(D) Diphtheria, Pertussis and Tetanus
Answer:
(D) Diphtheria, Pertussis and Tetanus

Question 36.
BCG vaccine is applied to immunise babies against-
(A) Polio
(B) Whooping cough
(C) Tuberculosis
(D) Cholera
Answer:
(C) Tuberculosis

Question 37.
Spienomegaly or enlargement of spleen is a common symptom of-
(A) Tuberculosis
(B) Malaria
(C) Hepatitis B
(D) Dengue
Answer:
(B) Malaria

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 38.
Washing hand before taking food can prevent-
(A) Diarrhoea
(B) Dysentery
(C) Polio
(D) All of these
Answer:
(D) All of these

Question 39.
Orally administrable vaccine-
(A) Salk polio vaccine
(B) Sabin polio vaccine
(C) Cholera vaccine
(D) Rubella vaccine
Answer:
(B) Sabin polio vaccine

Question 40.
Which one of the following is not related to phagocytosis process-
(A) Macrophages
(B) Lymphocytes
(C) Neutrophils
(D) Monocytes
Answer:
(B) Lymphocytes

Question 41.
Effectiveness of a vaccine is retained within the body by-
(A) Helper T-cells
(B) Macrophage cells
(C) Memory T and B-cells
(D) All lymphocytes
Answer:
(C) Memory T and B-cells

Question 42.
Diarrhoea may be caused by-
(A) Entamoeba
(B) Shigella
(C) Salmonella
(D) All of these
Answer:
(D) All of these

Question 43.
Which of the following diseases may be caused by protozoa, bacteria and even virus?
(A) Cholera
(B) Diphtheria
(C) Pneumonia
(D) Diarrhoea
Answer:
(D) Diarrhoea

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 44.
Prolonged diarrhoea results into-
(A) Severe respiratory distress
(B) Dehydration of the body
(C) Very high fever
(D) Severe headache
Answer:
(B) Dehydration of the body

Question 45.
The organism acting as a vector for diarrhoea causing pathogen is –
(A) House Fly
(B) Cockroach
(C) Both
(D) None of these
Answer:
(C) Both

Question 46.
Feeling of extreme chill followed by very high fever is the symptom of –
(A) Pneumonia
(B) Diphtheria
(C) Malaria
(D) Dengue
Answer:
(C) Malaria

Question 47.
Plasmodium, the pathogen of malaria is a type of-
(A) Bacteria
(B) Virus
(C) Fungus
(D) Protozoa
Answer:
(D) Protozoa

Question 48.
Vector of malarial pathogen is-
(A) Female Anopheles mosquito
(B) Male Anopheles mosquito
(C) Female Culex mosquito
(D) Female Aedes mosquito
Answer:
(A) Female Anopheles mosquito

Question 49.
Inflamed tonsil with white sheath over it indicates –
(A) Tuberculosis
(B) Pneumonia
(C) Diphtheria
(D) All of these
Answer:
(C) Diphtheria

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 50.
Diphtheria is caused by-
(A) Mycobacterium
(B) Corynebacterium
(C) Streptococcus
(D) Plasmodium
Answer:
(B) Corynebacterium

Question 51.
Respiratory droplets may cause infections like-
(A) Malaria, Cholera and Diarrhoea
(B) Diphtheria, Tuberculosis and Tetanus
(C) Tuberculosis, Diphtheria and Pneumonia
(D) Tuberculosis, Dengue and Diphtheria
Answer:
(C) Tuberculosis, Diphtheria and Pneumonia

Question 52.
Lock Jaw disease is caused by the infection of –
(A) Dengue virus
(B) Corynebacterium diphtheriae
(C) Mycobacterium tuberculosis
(D) Clostridium tetani
Answer:
(D) Clostridium tetani

Question 53.
Lungs are affected in-
(A) Tuberculosis and diarrhoea
(B) Pneumonia and tuberculosis
(C) Tuberculosis and dengue
(D) All of these
Answer:
(B) Pneumonia and tuberculosis

Question 54.
Prolonged dry cough with quick loss of weight is a common indication of-
(A) Diphtheria
(B) Dengue
(C) Tuberculosis
(D) Pneumonia
Answer:
(C) Tuberculosis

Question 55.
Severe joint pain with high fever and occasional rash on the back and shoulder are the common symptoms of-
(A) Malaria
(B) Chicken pox
(C) Pneumonia
(D) Dengue
Answer:
(D) Dengue

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 56.
Transmission of which of the following diseases is caused by contaminated blood transfusion?
(A) Malaria, Tuberculosis and AIDS
(B) Malaria, Hepatitis B and AIDS
(C) Hepatitis A, Hepatitis B and AIDS
(D) AIDS only
Answer:
(B) Malaria, Hepatitis B and AIDS

Question 57.
Transmission of which of the following diseases are caused by contaminated food and water?
(A) Diarrhoea
(B) Diarrhoea and Hepatitis A
(C) Hepatitis A and Hepatitis B
(D) Hepatitis B only
Answer:
(B) Diarrhoea and Hepatitis A

Question 58.
Small pox vaccination as well as foundation of immunology has been laid down by-
(A) Robert Koch
(B) Louis Pasteur
(C) Edward Jenner
(D) Ronald Ross
Answer:
(C) Edward Jenner

Question 59.
Flavivirus causes-
(A) Dengue
(B) Hepatitis B
(C) AIDS
(D) Viral diarrhoea
Answer:
(A) Dengue

Question 60.
Which of these diseases may be transmitted sexually?
(A) AIDS and Hepatitis B
(B) Hepatitis A and AIDS
(C) Tuberculosis and Hepatitis B
(D) Hepatitis B, Hepatitis A and AIDS
Answer:
(A) AIDS and Hepatitis B

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 61.
Which of the following set of diseases are of viral origin?
(A) Hepatitis B, Hepatitis A, Dengue and AIDS
(B) Dengue, Malaria and AIDS
(C) Tuberculosis and Pneumonia
(D) Hepatitis B, Hepatitis A, Tetanus and AIDS
Answer:
(A) Hepatitis B, Hepatitis A, Dengue and AIDS

Question 62.
Which cell of human body is damaged by HIV?
(A) Lymphocyte
(B) Eosinophil
(C) Macrophage
(D) Red blood cell
Answer:
(A) Lymphocyte

Question 63.
Vector of dengue virus is –
(A) Female Anopheles mosquito
(B) Male Anopheles mosquito
(C) Female Culex mosquito
(D) Female Aedes mosquito
Answer:
(D) Female Aedes mosquito

Question 64.
Which pathogen is not spread through blood?
(A) Hepatitis A
(B) Hepatitis B
(C) Malarial parasite
(D) HIV
Answer:
(A) Hepatitis A

Question 65.
ORS treatment protects a diarrhoea patient from-
(A) Abdominal pain
(B) Muscular cramp
(C) Thirst
(D) Dehydration
Answer:
(D) Dehydration

Question 66.
Personal level of washing includes-
(A) Brushing teeth
(B) Bathing
(C) Cleaning hands before taking food
(D) All of these
Answer:
(D) All of these

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 67.
Which is treated as family level of washing?
(A) Bathing
(B) Cleaning toilet
(C) Cleaning hands
(D) All of these
Answer:
(B) Cleaning toilet

Question 68.
Social level of washing includes-
(A) Washing the door-step of your house
(B) Washing the water reservoir of your house
(C) Washing the toilets of rail station premises
(D) All of these
Answer:
(C) Washing the toilets of rail station premises

Question 69.
A disinfectant used for personal washing is –
(A) Bleaching powder
(B) Phenyl
(C) Hand sanitiser
(D) None of these
Answer:
(C) Hand sanitiser

Question 70.
A common but very effective disinfectant for cut wound is –
(A) Soap
(B) Ethyl alcohol
(C) Methyl alcohol
(D) All of these
Answer:
(D) All of these

Question 71.
Consuming a ripe tomato by plucking it directly from the plant of a field is harmful, as it may carry-
(A) Eggs of parasitic worms
(B) Remnants of pesticides
(C) Dirt and mud
(D) All of these
Answer:
(D) All of these

Question 72.
Which organisation has developed a global strategy to lift the standard of health of school children?
(A) UNICEF
(B) UNO
(C) WHO
(D) None of these
Answer:
(A) UNICEF

Fill in the blanks :

  1. Plasma cells produce specific antibodies to inactivate _____.
  2. Tetanus vaccine is prepared by inactivated _____ from Clostridium tetani.
  3. In ‘ T ‘ cells, ‘T ‘ indicate _____.
  4. Two types of B cells are plasma cells and _____ cells.
  5. The ability of body to resist harmful effect of pathogens is known as _____.
  6. ‘WASH’ programme was developed by _____.
  7. Small pox vaccine is a _____ vaccine.
  8. _____ cells destroy TC cells and TH Cells.
  9. Memory cells stay in _____ glands.
  10. Acquired _____ immunity develops naturally due to the introduction of antigens.
  11. Mycobacterium tuberculosis is a pathogenic _____.
  12. Thymus gland is a _____ lymphoid organ.

Answer:

  1. Antigens
  2. Toxin
  3. Thymus
  4. Memory
  5. Immunity
  6. UNICEF
  7. Heterotypic
  8. Suppressor
  9. Lymph
  10. Active
  11. Bacterium
  12. Primary

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

State true or false :

  1. Vaccine against Hepatitis $B$ is an example of subunit vaccine.
  2. Toxic chemicals like snake venom can act as antigens.
  3. Stiffness of muscles with severe pain is a symptom of diarrhoea.
  4. Tuberculosis is a virus borne disease.
  5. Female Aedes aegypti mosquito carries Flavivirus from a diseased person to a healthy individual.
  6. Antigens mainly include proteins.
  7. IgM is a pentamer.
  8. IgA is present in tears.
  9. AIDS is transmitted through drinking water.
  10. Yellowing of skin and eye is a symptom of pneumonia.
  11. Vaccination develops artificial active immunity.
  12. Epitope is a part of antibody.

Answer:

  1. True
  2. True
  3. False
  4. False
  5. True
  6. True
  7. True
  8. True
  9. False
  10. False
  11. True
  12. False

Match the columns :

Question 1.

Left column Right column
1. Vaccine of plague A. Heterotypic vaccine
2. Vaccine of mumps B. Subunit vaccine
3. Vaccine of small pox C. Attenuated vaccine
4. Vaccine of hepatitis B D. Killed vaccine
E. Conjugate Vaccine

Answer:

Left column Right column
1. Vaccine of plague D. Killed vaccine
2. Vaccine of mumps C. Attenuated vaccine
3. Vaccine of small pox A. Heterotypic vaccine
4. Vaccine of hepatitis B B. Subunit vaccine

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 2.

Left column Right column
1. Cause of diarrhoea A. Retro virus
2. Cause of malaria B. Flavivirus
3. Cause of AIDS C. E.coli
4. Cause of Dengue D. Plasmodium vivax
E. Rotavirus

Answer:

Left column Right column
1. Cause of diarrhoea E. Rotavirus
2. Cause of malaria D. Plasmodium vivax
3. Cause of AIDS A. Retro virus
4. Cause of Dengue B. Flavivirus

Question 3.

Left column Right column
1. T-cell A. Part of antigen
2. Plasma cells B. Cell-mediated immunity
3. Interferon C. Part of antibody
4. Epitope D. Viral infection
E. Humoral immunity

Answer:

Left column Right column
1. T-cell B. Cell-mediated immunity
2. Plasma cells E. Humoral immunity
3. Interferon D. Viral infection
4. Epitope A. Part of antigen

WBBSE Class 9 Life Science MCQ Questions Chapter 4.1 Immunity and Human Diseases

Question 4.

Left column Right column
1. lgA A. Pentamer
2. lgE B. Allergic reaction
3. lgM C. Dimer
4. lgG D. Placenta
E. Trimer

Answer:

Left column Right column
1. lgA D. Placenta
2. lgE B. Allergic reaction
3. lgM A. Pentamer
4. lgG D. Placenta

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