MCQ Class 9 Science Chapter 13 Why Do We Fall ill

Please refer to the MCQ Questions for Class 9 Science Chapter 13 Why Do We Fall ill. The following Why Do We Fall ill Class 9 Science MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 9. Our experts have designed MCQ Questions for Class 9 Science with Answers for all chapters in your NCERT Class 9 Science book.

Why Do We Fall ill Class 9 MCQ Questions with Answers

See below Why Do We Fall ill Class 9 Science MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. Elephantiasis is a disease that results in
(a) long-term effect on health.
(b) short-term effect on health.
(c) no effect on health.
(d) occasional bad effects on health.   

Question. Microbes that generally enter the body through nose, are likely to affect
(a) gut
(b) lungs
(c) liver
(d) lymph nodes 

Question. Find a chronic disease.
(a) Kala-azar
(b) Typhoid
(c) Diarrhoea
(d) Hypertension   

Question. What do you mean by ‘Congenital diseases’ ?
(a) These are deficiency diseases.
(b) These are present from time of birth.
(c) These are spread from man to man.
(d) These occur during lime time.     

Question. Health can be defined as a state of
(a) being physically healthy
(b) not being diseased
(c) being physically healthy and disease-free
(d) being well enough to function well physically, mentally and socially.   

Question. Find the statement that is incorrect about tuberculosis.
(a) It is caused by salmonella.
(b) It commonly affects lungs.
(c) The causative bacteria releases a toxin tuberculin.
(d) Patient’s sputum contains blood. 

Question. What is ‘hare-lip’ ?
(a) An acquired disease
(b) An infectious disease
(c) A metabolic disease
(d) A congenital disease    

Question. Identify a bacterial disease.
(a) Hepatitis B
(b) Poliomyelitis
(c) Tetanus
(d) Malaria  

Question. Which disease is different among the following on the basis of mode of transmission?
(a) AIDS
(b) Syphilis
(c) Gonorrhoea
(d) Rabies   

Question. Which of the following is not a non-infectious disease?
(a) High blood pressure
(b) Cancer
(c) Malaria
(d) Diabetes    

Question. What will happen if the kidneys are not filtering urine?
(a) Urine will be filtered by urinary bladder.
(b) Lungs will filter the urine.
(c) Brain will not think normally.
(d) Blood gets rich in carbon dioxide.     

Question. Which of the following statements is incorrect about a cell?
(a) Cells are the basic units of living beings.
(b) Cells cannot move from place to place.
(c) The living cell is a dynamic place.
(d) In cells that do not move, there is a repair going on. 

Question. Which one is an acute disease?
(a) Diabetes
(b) Tuberculosis
(c) Hypertension
(d) Typhoid    

Question. Find from the following, a disease caused by helminth.
(a) Common cold
(b) Chicken pox
(c) Elephantiasis
(d) Malaria   

Question. Which of the following diseases in not a congenital disease?
(a) Haemophilia
(b) Sickle-cell anaemia
(c) Down syndrome
(d) Dengue    

Question. Which of the following are protozoan diseases that are transmitted by mosquito vectors?
(a) Filariasis and typhus
(b) Kala-azar and diphtheria
(c) Malaria and kala-azar
(d) Yellow fever and dengue fever 

Question. Who were awarded Nobel prize for discovering the causative organism of peptic ulcer?
(a) Alexander Fleming and Darwin
(b) Barry Marshall and Leeuwenhoek
(c) Fleming and Edward Jenner
(d) Barry Marshall and Robin Warren    

Question. Define ‘Vector’.
(a) Micro organisms which cause many diseases.
(b) Animals carry the infecting agents from a sick person to a healthy person.
(c) Infected person
(d) Diseased plants 

Question. Identify a mis-match pair.
(a) Leprosy – bacterial infection
(b) AIDS – bacterial infection
(c) Malaria – protozoan infection
(d) Elephantiasis – nematode infection   

FILL IN THE BLANK :

Question. ………. is a dreadful viral disease transmitted to human by the bite of a dog. 

Question. Any organism capable of producing a disease is called ………. 

Question. Infectious diseases are caused by ……….  

Question. Diseases which are present right from the birth are called ………. 

Question. The organism which spreads the disease from an infected person to a healthy person is called ……….

Question. Cholera is caused by ………. 

Question. Ability of an organism to resist disease is called a ………. 

Question. ………. vaccine gives considerable protection against tuberculosis. 

TRUE/FALSE :

Question. The process of vaccination was developed by Jenner in the year 1796.

Question. HIV virus is a retrovirus.

Question. Hepatitis B is more dangerous than Hepatitis A.

Question. When the diet is deficient in proteins as well as carbohydrates, the child suffers from marasmus.

Question. Lack of any nutrient in the diet is known as balanced diet.

Question. Drugs like Ampicillin and Chloramphenicol are preventive measures against typhoid.

Question. Ringworm is caused by a nematode worm.

Question. AIDS can be transmitted through blood transfusion.

Question. Interferons produced in our body, fight against the viral infections.

Question. Penicillin is effective against bacteria because it inhibits their wall formation.

MATCHING QUESTIONS :

Question.

Question.

ASSERTION AND REASON :

DIRECTION : In each of the following questions, a statement of Assertion is given and a corresponding statement of Reason is given just below it. Of the statements, given below, mark the correct answer as:
(a) Both assertion and reason are true and reason is the correct explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Both Assertion and Reason are false.

Question. Assertion : In many species of mosquitoes, only the females feed on warm-blooded animals, including humans.
Reason : Female mosquitoes are vectors of many diseases.   

Question. Assertion : Dengue can be treated by taking antibiotics.
Reason : Antibiotics block the biochemical life processes of viruses.   

Question. Assertion : Its okay to sit near a person suffering from cold.
Reason : Cold is a non-communicable disease.  

Question. Assertion : Rabies virus is spread by the bite of infected dogs and other animals.
Reason : There are anti-rabies vaccines for both humans and animals.   

Question. Assertion : Cancer is a non-infectious disease.
Reason : Cancer impairs normal body activities only for few days.