NEET Biology Class 9 Chapter 4 Why Do We Fall Ill Multiple Choice Question And Answers

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Why Do We Fall Ill Multiple Choice Questions

Directions: This section contains multiple-choice questions. Each question has 4 choices (1), (2), and out of which only one is correct.

Question 1. AIDS is caused by

  1. Blood cancer
  2. HTLV-III
  3. Bacterium
  4. TMV

Answer: 2. HTLV-III

Read And Learn More: NEET Biology Class 9 Multiple Choice Question And Answers

Question 2. Passive immunity was discovered by

  1. Robert Koch
  2. L. Pasteur
  3. Edward Jenner
  4. Eemil Von Behring

Answer: 2. L. Pasteur

Question 3. Vaccines are prepared from immune

  1. Vitamins
  2. Blood
  3. Serum
  4. Plasma

Answer: 4. Plasma

NEET Biology Class 9 Why Do We Fall Ill MCQs

NEET Biology Class 9 Chapter 4 Why Do We Fall Ill Multiple Choice Question And Answers

Question 4. Which one of the following pairs of diseases can spread through blood transfusion?

  1. Cholera and hepatitis
  2. Hepatitis and AIDS
  3. Diabetes mellitus and malaria
  4. Hay fever and AIDS

Answer: 2. Hepatitis and AIDS

Question 5. The term “antibiotic” was coined by

  1. Alexander flming
  2. Edward Jenner
  3. Louis Pasteur
  4. Selman Waksman

Answer: 4. Selman waksman

Question 6. Antibodies are produced by

  1. Erythrocytes
  2. Thrombocytes
  3. Monocytes
  4. Lymphocytes

Answer: 4. Lymphocytes

Question 7. B.C.G. vaccine is used against

  1. T.B.
  2. Leprosy
  3. Food Poisoning
  4. None of these

Answer: 1. T.B.

Question 8. DPT vaccine is given for

  1. Tetanus, Polio, Plague
  2. Diptheria, Whooping Cough, And Leprosy
  3. Diptheria, Pneumonia, Tetanus
  4. Diptheria, whooping cough, tetanus

Answer: 4. Diptheria, whooping cough, tetanus

Why Do We Fall Ill NEET MCQs with Answers

Question 9. Active immunity is obtained by

  1. Antibodies
  2. Weakened Germs Infection
  3. Natural Resistance
  4. None Of these

Answer: 2. Weakened Germs Infection

Question 10. Which is an auto-immune disease?

  1. Cancer
  2. Asthma
  3. Erythroblastosis foetalis
  4. Rheumatoid arthritis

Answer: 3. Erythroblastosis foetalis

Question 11. ‘Polio’ is caused by

  1. A Bacteriophage
  2. A Virus With Single Strand Rna
  3. A Virus With Single Strand DNA
  4. A Virus with double-strand DNA

Answer: 2. A Virus With Single Strand Rna

Question 12. The Jaundice is a physiological liver disease. It is caused by a

  1. Bacterium
  2. Virus
  3. Protozoan
  4. Helminth

Answer: 2. Virus

Question 13. Which of the following disease is not transmitted by house flies?

  1. Typhoid
  2. Yellow fever
  3. Cholera
  4. Dysentery

Answer: 2. Yellow fever

NEET Biology Why Do We Fall Ill Important MCQs

Question 14. Cholera is caused by

  1. Virus
  2. Bacteria
  3. Fungi
  4. Protozoan

Answer: 2. Bacteria

Question 15. The Malignant tertian malaria is caused by

  1. Plasmodium vivax
  2. Plasmodium falciparum
  3. Plasmodium ovale
  4. Plasmodium malaria

Answer: 2. Plasmodium falciparum

Question 16. All diseases are spread by housefuls except

  1. Leprosy
  2. Dysentery
  3. Typhoid
  4. Sleeping sickness

Answer: 4. Sleeping sickness

Question 17. Kala-azar is used and transmitted respectively by

  1. Leishmania and Phlebatomus
  2. Trypanosoma and sand fl
  3. Leishmania and tsetse fl
  4. Trypanosoma and Glossina palpalis

Answer: 1. Leishmania and Phlebatomus

Question 18. Fever in malaria is due to

  1. Entry Of Sporozoites Into Blood Capillaries
  2. Entry Of Merozoites Into Liver Cells
  3. Release Of Merozoites From Red Blood Cells
  4. Entry Of Cryptomerozoites Into Red Blood Cells

Answer: 3. Release Of Merozoites From Red Blood Cells

Question 19. Cancer is related to

  1. Uncontrolled Growth Of Tissues
  2. Non-Malignant Tumor
  3. Controlled Division Of Tissues
  4. None of these

Answer: 1. Uncontrolled Growth Of Tissues

Best Multiple Choice Questions for Class 9 Biology Why Do We Fall Ill

Question 20. Tobacco smoke contains carbon monoxide which

  1. Reduces The Oxygen-Carrying Capacity Of Blood
  2. Causes Gastric Ulcers
  3. Raises Blood Pressure
  4. Is Carcinogenic

Answer: 1. Reduces The Oxygen-Carrying Capacity Of Blood

Question 21. A group of viral borne disease is

  1. Gepatities And Typhoid
  2. Polio And Dengue
  3. Rabies And Tetanus
  4. Measles and cholera

Answer: 2. Polio And Dengue

Question 22. Mosquito is not a vector for a disease in the following

  1. Malaria
  2. Typhoid
  3. Dengu
  4. Elephantitis

Answer: 2. Typhoid

Question 23. Health is

  1. Complete Physical well-being
  2. Mental Well Being
  3. Social Well Being
  4. All the above

Answer: 4. All the above

Why Do We Fall Ill Class 9 NEET Objective Questions

Question 24. Community health aims at

  1. Better health and family planning
  2. Better hygiene and a clean environment
  3. Removing communicable diseases
  4. All of the above

Answer: 4. All of the above

Question 25. ‘Pathogens’ were discovered by

  1. Edward Jenner
  2. William Harvey
  3. Pasteur
  4. Robert Koch

Answer: 4. Robert Koch

Question 26. A scientist associated with ‘antibiotics’ is

  1. Brown
  2. Flemming
  3. Leeuwenhoek
  4. Koch

Answer: 2. Flemming

Question 27. An antibody is

  1. Molecule That Specifically Inactivates An Antigen
  2. WBC Which Invades Bacteria
  3. Secretion Of Mammalian RBC
  4. Component of blood

Answer: 1. Molecule That Specifically Inactivates An Antigen

Question 28. ‘AIDS’ stands for

  1. Anto immune deficiency syndrome
  2. Auto immune deficiency syndrome
  3. Acquired immune deficiency syndrome
  4. Acquired immune disease syndrome

Answer: 3. Acquired immune deficiency syndrome

NEET Biology Class 9 Chapter 4 MCQs with Solutions

Question 29. The AIDS test is known as

  1. ELISA
  2. Australian antigen
  3. HIV test
  4. None of these

Answer: 1. ELISA

Question 30. Which of the following is a communicable disease?

  1. Phenylketoneuria
  2. Cancer
  3. Rabies
  4. Alkaptonuria

Answer: 3. Rabies

Question 31. The biological agents of disease included

  1. Binerals, Vitamins, Proteins And Carbohydrates
  2. Viruses, Bacteria, Fungi, Helminths And Other Organisms
  3. Heat, Cold, Humidity Pressure, Radiations
  4. All The above

Answer: 2. Viruses, Bacteria, Fungi, Helminths And Other Organisms

Question 32. Tuberculosis is caused by

Bacterium

Virus

Protozoan

Malnutrition

Answer: 1. Bacterium

Question 33. ‘Plague’ is transmitted by

  1. House fl
  2. Tse-tse fl
  3. Rat file
  4. Mosquito

Answer: 3. Rat file

Question 34. ‘Black Death’ is related with

  1. Plague
  2. Cancer
  3. Tuberculosis
  4. Measles

Answer: 1. Plague

Question 35. Cholera, leprosy, and diphtheria are

  1. Bacteria Diseases
  2. Viral Diseases
  3. Fungal Diseases
  4. Functional Diseases

Answer: 1. Bacteria Diseases

Question 36. Which disease is caused by a flagellate?

  1. Sleeping sickness
  2. Dysentery
  3. Whooping cough
  4. Jaundice

Answer: 1. Sleeping sickness

Question 37. Cancer can be caused by the use of

  1. Tobacco
  2. Alcohol
  3. Opium
  4. LSD

Answer: 1. Tobacco

Question 38. Dilation of blood vessels, increase in fat synthesis, low blood sugar, and inflammation of stomach are due to the consumption of

  1. Tobacco
  2. Drug Addition
  3. Alcohol
  4. Tobacco and drug addiction

Answer: 3. Alcohol

Question 39. Which of the following are intimately related?

  1. Disease and health
  2. Body and health
  3. Body and mind
  4. Body and spiritual values

Answer: 3. Body and mind

Question 40. The group of diseases spread by houseflies is

  1. Malaria, Cholera, Scabies
  2. Abies, Rickets, Diarrhoea
  3. Typhoid, Dysentery, Tuberculosis
  4. Ingworm, Scurvy, Vomiting

Answer: 3. Yphoid, Dysentery, Tuberculosis

Question 41. In order to prevent the spreading of a communicable disease like Cholera it is necessary to

  1. Control The Population Of Mosquitoes
  2. Ry Up All Ponds In The Neighborhood
  3. Educate People To Drink Boiled Water And Not To Eat Exposed Food
  4. Prevent Others From Coming In Contact With The Diseased Person

Answer: 3. Educate People To Drink Boiled Water And Not To Eat Exposed Food

Question 42. Which of the following diseases is caused by a virus?

  1. Tuberculosis
  2. Mallpox
  3. Owl Cholera
  4. Alf diphtheria

Answer: 2. Mallpox

Question 43. Tuberculosis is a disease caused by

  1. Acteria
  2. Irus
  3. Protozoan
  4. Malnutrition

Answer: 1. Acteria

Question 44. Which of the following can be used for the biological control of mosquitoes?

  1. Oil
  2. Ointments
  3. DDT
  4. Gambusia

Answer: 4. Gambusia

Question 45. Fevers

  1. Decrease Interferon Production.
  2. Decrease The Concentration Of Iron In The Blood.
  3. Decrease The Activity Of Phagocytes.
  4. Increase the reproduction rate of invading bacteria.

Answer: 2. Decrease The Concentration Of Iron In The Blood.

Question 46. ‘Smallpox’ (Variola) disease is caused by

  1. Virus
  2. Bacterium
  3. Protozoan
  4. Mosquito

Answer: 1. Virus

Question 47. Pulse-Polio programme is organised in our country

  1. To Cure Polio
  2. To Eradicate Polio
  3. To Spread Polio
  4. None Of these.

Answer: 2. To Eradicate Polio

NEET Study Material for Why Do We Fall Ill with MCQs

Question 48. The vector for causing sleeping sickness in men is

  1. House Fl
  2. Mosquito
  3. Tse-Tse Fl
  4. Butter fl

Answer: 3. Tse-Tse Fl

Question 49. Examples of congenital diseases are

  1. Alkaptonuria, albinism
  2. Albinism, sickle cell anemia
  3. Hemophilia
  4. All the above

Answer: 4. All the above

Question 50. Arteether is the latest drug for

  1. Polio
  2. Malaria
  3. Diarrhea
  4. Common cold

Answer: 2. Malaria

Question 51. Hydrophobia occurs during

  1. Tetanus
  2. Rabies
  3. Polio
  4. Cholera

Answer: 2. Rabies

Question 52. The primary organ affected by tuberculosis is

  1. Bone Marrow
  2. Spleen
  3. Intestine
  4. Lungs

Answer: 4. Lungs

Question 53. The diseases that can be transmitted through body fluid only are

  1. TB and cholera
  2. Typhoid And Cholera
  3. Cholera And Rabies
  4. AIDS and hepatitis B

Answer: 4. AIDS and hepatitis B

Question 54. BCG vaccine is a preventive measure against

  1. Tuberculosis
  2. Typhoid
  3. AIDS
  4. Cholera

Answer: 1. Tuberculosis

Question 55. World AIDS Day is celebrated on

  1. 5th June
  2. 1st October
  3. 11th July
  4. 1st December

Answer: 4. 1st December

Question 56. If you live in an overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases

  1. Cancer
  2. AIDS
  3. Air Borne Diseases
  4. Cholera

Answer: 3. Air Borne Diseases

Question 57. The interval between infection and the appearance of a disease is known as

  1. Inoculation
  2. Penetration
  3. Infection Period
  4. Incubation period

Answer: 4. Incubation period

Question 58. Microbes that generally enter the body through the nose are likely to affect

  1. Gut
  2. Lungs
  3. Liver
  4. Lymph nodes

Answer: 2. Lungs

Question 59. Which of the following is a mismatch?

  1. AIDS – Bacterial infection
  2. Polio – Viral infection
  3. Malaria – Protozoan infection
  4. Elephantiasis – Helminth infection

Answer: 1. AIDS – Bacterial infection

Question 60. The type of disease that begins abruptly, affects a patient’s normal functioning but lasts for a short duration is termed as

  1. Chronic Disease
  2. Acute Disease
  3. Hormonal Disease
  4. Deficiency disease

Answer: 2. Acute Disease

Why Do We Fall Ill Class 9 NCERT MCQs with Answer Key

Question 61. Goitre is related with

  1. Vitamin A
  2. Florine
  3. Iodine
  4. Pancreas

Answer: 3. Iodine

Question 62. An animal that transmits a disease from an infected person or its stools etc. to another potential host is called

  1. Primary Host
  2. Secondary Host
  3. Parasite
  4. Vector

Answer: 4. Vector

Question 63. Which one of the following has a long-term effect on the health of an individual?

  1. Common cold
  2. Chickenpox
  3. Chewing tobacco
  4. Stress.

Answer: 3. Chewing tobacco

Question 64. We should not allow mosquitoes to breed in our surroundings because they

  1. Multiply Very Fast And Cause Pollution
  2. Are Vectors For Many Diseases
  3. Bite And Cause Skin Diseases
  4. Are Not important insects

Answer: 2. Are Vectors For Many Diseases

Question 65. Making anti-viral drugs is more difficult than making antibacterial medicines because

  1. Virus Make Use Of Host Machinery
  2. Viruses Are On The Border Line Of Living And Nonliving
  3. Viruses Have Few Biochemical Mechanisms Of Their Own
  4. Viruses Have A Protein Coat

Answer: 3. Viruses Have Few Biochemical Mechanisms Of Their Own

Question 66. Which one of the following diseases is caused by protozoans?

  1. Malaria
  2. Influenza
  3. AIDS
  4. Cholera

Answer: 1. Malaria

Question 67. Which one of the following is not important for individual health?

  1. Living in a clean space
  2. Good economic condition
  3. Social equality and harmony
  4. Living in a large and well-furnished house

Answer: 4. Living in a large and well-furnished house

Question 68. Vectors can be defined as

  1. Animals Carry The Infecting Agents From a Sick Person To Another Healthy Person
  2. Microorganisms That Cause Many Diseases
  3. Infected Person
  4. Diseased plants

Answer: 1. Animals Carry The Infecting Agents From Sick Person To Another Healthy Person

Question 69. The disease caused due to worms is

  1. Tetanus
  2. Rabies
  3. Sleeping Sickness
  4. Fiariasis

Answer: 4. Fiariasis

Question 70. Penicillin is a drug that can

  1. Interfere In The Biological Pathway Of Bacteria
  2. An Antibiotic That Can Kill Bacteria
  3. Interfere In The Biological Pathways Of Virus
  4. None of the above

Answer: 3. Interfere In The Biological Pathways Of Virus

Question 71. Which one of the following is attacked by the HIV virus?

  1. Red-blood cell
  2. White-blood cells
  3. Liver cell
  4. Long cell

Answer: 2. Liver cell

Multiple Choice Questions on Why Do We Fall Ill for NEET Exam

Question 72. Trypanosoma, Leishmania, and Plasmodium are the examples of

  1. Virus
  2. Bacteria
  3. Protozoa
  4. Worm

Answer: 3. Protozoa

Question 73. The pathogens of disease are

  1. Bacteria
  2. Virus
  3. Protozoa
  4. All Of the above

Answer: 4. All Of the above

Question 74. Diarrhea, cholera, and typhoid, are diseases that have one thing in common, that is

  1. All Of Them Are Caused By Bacteria
  2. All Of Them Are Transmitted By Contaminated Food And Water.
  3. All Of Them Are Cure By Antibiotics
  4. All Of the above

Answer: 4. All Of the above

Question 75. The commonest antimalarial drug is obtained from

  1. Roots Of Cinchona Tree
  2. Bark Of Cinchona Tree
  3. Leaf Of Cinchona Tree
  4. Any Part Of The Plant.

Answer: 2. Bark Of Cinchona Tree

Question 76. The vaccine is not available against which of the following diseases?

  1. Polio
  2. Tuberculosis
  3. Diphtheria
  4. Malaria

Answer: 4. Malaria

Question 77. In chronic disease-patient suffers from

  1. Poor Appetite
  2. Short Breath
  3. Tiredness
  4. All The above.

Answer: 4. All The above

Question 78. Tuberculosis can be prevented through vaccination with

  1. MMR
  2. BCG
  3. Hib
  4. TAB

Answer: 2. BCG

Question 79. Which of the following is a non-communicable disease?

  1. Allergy
  2. Malaria
  3. Diarrhea
  4. Tuberculosis.

Answer: 1. Allergy

Question 80. Ascaris lumbricoides is a common roundworm of

  1. Large Intestine
  2. Liver
  3. Bile Duct
  4. Small Intestine

Answer: 4. Small Intestine

Question 81. The droplet method of transmission of the disease is found in

  1. Common cold
  2. AIDS
  3. Hepatitis
  4. Syphilis

Answer: 1. Common cold

Question 82. A chronic disease is

  1. Hypertension
  2. Typhoid
  3. Diarrhea
  4. Kala-Azar

Answer: 1. Hypertension

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