Ncert class 9 chapter 13(why do we fall ill) activity solution
Answers
Answer:
1. State any two conditions essential for good health.
Solution:
Two conditions essential for good health are:
1. State of physical, mental and social well-being.
2. Better surroundings or environment.
2. State any two conditions essential for being free of disease.
Solution:
Two conditions essential for being free of disease are:
1. Personal and domestic hygiene.
2. Clean environment and surroundings.
3. Are the answers to the above questions necessarily the same or different? Why?
Solution:
The answers to the above questions are different because a person may be free of disease but not be good mentally, socially and economically.
In-Text Questions 13.2.5
1. 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?
Solution:
1. Headache
2. Cough
3. Loose motions
These indicate that there may be a disease, but they don’t indicate what the disease is. Hence, one would still visit the doctor for treatment and to know the cause of the above symptoms.
Even a single symptom is present one needs to consult the doctor to get proper treatment.
2. In which of the following case do you think the long-term effects on your health are likely to be most unpleasant?
if you get jaundiceif you get liceif you get acne. Why?
Solution:
Lice and acne will not cause any long-term effects on the human body. However, the effects of jaundice will be long-term and most unpleasant.
Jaundice is a chronic disease that impacts the whole body and takes a longer time to be cured completely.
In-Text Questions 13.3.5
1. Why are we normally advised to take bland and nourishing food when we are sick?
Solution:
During sickness the body becomes weak, and the digestive system does not work properly. So easily digested food needs to be taken during this period as well as food rich in nutrients are advised to take. The immunity of the body decreases during disease or infection. Hence, bland and nourishing food is given for speedy recovery.
2. What are the different means by which infectious diseases are spread?
Solution:
Infectious diseases are generally spread through the following modes – Water, air, vector such as mosquito, sexual contact, physical contact with the affected, or by using affected person’s clothes, bedding, utensils, etc.
3. What precautions can you take in your school to reduce the incidence of infectious diseases?
Solution:
Some of the precautions that we can take in our school to reduce the incidence of infectious diseases are :
1. Drinking clean and hygienic water.
2. Preventing the accumulation of water in surroundings.
3. Keeping the toilet neat and clean.
4. Avoiding consumption of uncovered food and other eatables.
5. Taking bath daily
6. Have a balanced diet.
7. Provide a clean environment which prevents the breeding of mosquitoes. This prevents the spread of vector-borne diseases.
4. What is immunisation?
Solution:
The method to boost our immune system with the help of vaccines that help the body to fight against infectious diseases is called immunisation.
5. What are the immunisation programs available at the nearest health center in your locality? Which of these diseases are the major health problems in your area?
Solution:
The following immunization programme is available at the nearest health centre in our locality
1. Immunization for infants—DPT, BCG, polio, measles and MMR.
2. For children—Typhoid, TT, DT, small pox and TAB.
3. For pregnant woman— TT and hepatitis-B.
The diseases like typhoid, polio, measles are the major health problems in our locality.
Exercise Questions
1. How many times did you fall ill in the last one year? What were the illnesses? (a). Think of one change you could make in your habits in order to avoid any of/most of the above illnesses.
(b). Think of one change you would wish for in your surroundings in order to avoid any of/most of the above illnesses.
Solution:
I fell ill twice in the last year. I suffered from diarrhoea first and then dengue fever.
Explanation:
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