Biology

Why Do We Fall Ill?

Question:

What are the immunisation programmes available at the nearest health centre in your locality? Which of these diseases are the major health problems in your area ?

Answer:

The following immunisation programmes are available at the nearest health centre in our locality :
In our locality, diphtheria, pertussis, tetanus, polio, typhoid and measles are major health problems. In order to prevent these diseases, an expanded programme of immunisation is carried by the government of India which covers all these diseases and provide free vaccination in our locality.
important-question-for-cbse-class-9-science-why-do-we-fall-iii-5

previuos
next

Why Do We Fall Ill?

Q 1.

Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.

Q 2.

Give two examples of bacterial antibiotics.

Q 3.

Name a disease which was earlier considered to be chronic but now can be treated in short duration?

Q 4.

What is inflammation ? Write the symptoms of this in human body.

Q 5.

Give an example of fungal antibiotic.

Q 6.

Name the vector which causes malaria.

Q 7.

Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.

Q 8.

Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?

Q 9.

Differentiate between acute diseases and chronic diseases.

Q 10.

(i) Why a person suffering from AIDS cannot fight even small infections ?
(ii) In a slum area, many people are suffering from malaria. Mention any two unhygienic conditions that must be prevailing in that locality.
(iii) Why female Anopheles mosquito feeds on human blood ? [SAII – 2014]

Q 11.

In which of the following case do you think the long-term effects on your health are likely to be most unpleasant? a. if you get jaundice, b. if you get lice, c. if you get acne. Why?

Q 12.

Why Colostrum is good for infants?

Q 13.

List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor ? Why or why not ?

Q 14.

Classify infectious agents into different categories and also mention the diseases caused by them.

Q 15.

Define Health? What do you interpret when we say a person is in good health?

Q 16.

Why is it important that we think of these categories of infectious agents?

Q 17.

Name the vector that can cause sleeping sickness.

Q 18.

Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.

Q 19.

State any two conditions essential for being free of disease.

Q 20.

A baby is not able to tell her/his caretakers that she/he is sick. What would help us to find out (a) that the baby is sick? (b) what is the sickness?

Q 21.

Why are we normally advised to take bland and nourishing food when we are sick?

Q 22.

What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]

Q 23.

How can we prevent water borne and vector borne infections ?

Q 24.

What precautions will you take to justify “prevention is better than cure” ?

Q 25.

Differentiate between communicable and non-communicable diseases. Give one example of each.

Q 26.

What is a balanced diet?

Q 27.

Differentiate between Acute Diseases and Chronic Diseases.

Q 28.

What are congenital diseases? Give two examples of such disease.

Q 29.

Name the protozoan pathogen that causes kala-azar.

Q 30.

(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?

Q 31.

A baby is not able to tell her / his caretakers that she / he is sick. What would help us to find out:
(a) that the baby is sick ?
(b) what is the sickness ?

Q 32.

What do you mean by immune response ? , [SAII – 2014]

Q 33.

What is 'germ theory of disease'? Who proposed it?

Q 34.

What do you mean by Phagocytosis?

Q 35.

Write differences between 'Being Healthy' and 'Disease Free'.

Q 36.

What is the purpose of vaccination ?

Q 37.

Name any two diseases which are caused due to unprotected sexual intercourse.

Q 38.

What is an antibiotic ? Give two examples.

Q 39.

Name any four diseases transmitted through vectors.

Q 40.

List any four essential factors that must be taken icare of by an individual for keeping good health.

Q 41.

(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?

Q 42.

What is an antibiotic ? Give its one example.

Q 43.

Under which of the following conditions are you most likely to fall sick ?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles. Why ?

Q 44.

Who discovered ‘vaccine’ for the first time ? Name two diseases which can be prevented by using vaccines.

Q 45.

“On exposure with an infectious microbe does not necessarily mean developing noticeable disease”. Do you agree ? Explain with reason. If yes, how severe infections occur in our body ?

Q 46.

Why is immune system essential for our health ?

Q 47.

Why do some children fall ill more frequently than others living in the same locality ?

Q 48.

Why are antibiotics not effective for viral disease ?

Q 49.

Common cold spreads faster and is difficult to control. Give reason. [SAII -2014]

Q 50.

State giving reasons whether the following statements are correct or not:

  1.  Our surrounding area should be free from stagnant water.
  2. Staying clean is not necessary as long as you eat a balanced diet.
  3.  Social equality and harmony are necessary for good health.