Free PDF Download of NCERT Solutions Class 9 Science Chapter 13 – CBSE Term II
Chapter 13 provides students with precise solutions to all of the exercises and in-text questions found in the CBSE-aligned NCERT Class 9 textbook. Students are given the best study material available, the NCERT Class 9 Solutions, which are created by a team of subject matter experts that have a full understanding of the subject. Referring to and solving these solutions should be one of the most effective approaches to ace the term II exams and achieve excellent results.
The problems are addressed deftly and in an easily understandable way for Class 9 pupils. This aids in their comprehension of topics, fostering active learning and concept learning. The solutions are meticulously constructed to obtain maximum points on the CBSE Term II test and are evaluated by an expert team.
The NCERT Solutions help students become more familiar with the textbook. These solutions are simple to use and entirely dependable, with step-by-step instructions to help you comprehend the answers in the simplest way possible. One of the most effective ways for outperforming in the CBSE Term II tests is to use Practising Solutions.
CHAPTER 13_WHY DO WE FALL ILL ?NCERT SOLUTIONS
1. A doctor / nurse / health worker is exposed to more sick people than others in the community. Find out how she / he avoids getting sick herself / himself ?
A. i) A doctor / nurse / health worker when exposed to sick people keep their nose and mouth covered, wash hands with a soap before drinking water or eating food.
ii) They use mask, gloves etc. to avoid the direct contact with the person suffering from infectious diseases.
iii) In this way they avoid getting sick.
2. Under which of the following conditions is a person most likely to fall sick ?
a) When she is recovering from malaria.
b) When she has recovered from malaria and is taking care of someone suffering from chicken-pox.
c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chicken-pox. Why ?
A. A person is most likely to fall sick when she is on four-day fast after recovering from malaria and is taking care of some one suffering from chicken-pox.
The reasons are :
i) Due to malaria the person looses body fluids and become weak. Under these conditions if the person is on four-day fast the immune system of the person will be weakened further. This may lead to the death.
ii) With the weak immune system if she is taking care of someone suffering from chicken pox then she may also get the disease.
3. Under which of the following conditions are you most likely to fall sick ?
a) When you are taking examination.
b) When you have travelled by bus and train for two days.
c) When your friend is suffering from measles. Why ?
A. i) We are most likely to fall sick when we are near to our friend who is suffering from measles.
ii) As measles is an acute infectious disease caused by a virus and is characterized by fever and a rash, we are more likely to fall sick.
iii) This means that, one should stay away from a person suffering from measles.
4. State any two conditions essential for good health.
A. i) Person should be physically fit.
ii) He / She should have good social and economic conditions.
iii) Clean environment.
5. State any two conditions essential for being free of diseases.
A. i) Person should take balanced diet.
ii) Personal and community hygiene should be maintained.
6. Are the answers to the above questions necessarily the same or different ? Why ?
A. i) To some extent they are the same, because if the conditions that are essential for good health are maintained, then the chances of getting a disease will be minimized.
ii) But at the same time, we can say that they are different because being healthy or good health means physical, mental and social well-being. While being disease-free means not suffering from a particular disease.
7. 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?
A. Common symptoms which indicate sickness are :
i) Headache ii) Cough and iii) Fever
i) If I see any one of the above symptoms, I’ll immediately go to the doctor.
ii) It is because any of these symptoms can be the signs of sickness or ignoring the disease may aggravate the disease.
iii) The doctor will make his diagnosis and if needed, he’ll get some tests done and then start medication, if needed.
8. 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?
A. i) Having lice and acne will not have long-term effects on our body.
ii) In case of jaundice as liver does not function properly it will have drastic long term effects on the body.
9. Why are we normally advised to take bland and nourishing food when we are sick ?
A. i) When we are sick, the normal body functioning gets disturbed.
ii) In such a situation, food that is easily digestible and contains adequate nutrients is required for the speedy recovery.
iii) Hence, we will be advised to take bland and nourishing food when we are sick.
10.What precautions can you take in your school to reduce the incidence of Infectious diseases?
A. The precautions that one can take in school to reduce the incidence of infectious diseases are:
i) Using handkerchief while coughing and sneezing.
ii) Washing hands before and after eating food.
iii) Staying at home if any one suffers from infectious diseases.
iv) Getting vaccinated before the infection affects.
v) Keeping the surroundings of the school clean, checking for stagnant water.
11. What is immunization ?
A. A specific method of preventing diseases by inoculating vaccines in the human body is called immunization. / A process in which a person is made immune or resistant to infectious diseases is called immunization.
12. What immunization programmes are available at the nearest health centre in your locality?
A. The immunization programmes available at the nearest health centre in our locality are :
i) Tetanus vaccine boosters are given for every 10 years.
ii) Diphtheria, Pertussis, Tetanus, Polio and Small pox vaccines. Haemophilus influenza, Hepatitis type B/A, Influenza, Mumps, Rubella, Typhoid fever, Yellow fever, Encephalitis, etc.,
NCERT Exemplar Solutions for Science Chapter 13 in Class 9
Notes for Class 9 Science Chapter 13 from CBSE
Why Do We Get Sick? NCERT Solutions for Class 9 Science Chapter 13 – Why Do We Get Sick?
Why Do We Get Sick? Is the 13th Chapter of the NCERT Class 9 Science textbook covers numerous concepts of health, diseases, types of diseases, and disease prevention strategies? The weightage for this Chapter is 3 marks, as seen in past years’ question papers, and it is expected to follow the same trend this time around, with a 3-mark question. As a result, students are urged to practice NCERT Solutions in order to achieve the best results.
Students who have a thorough understanding of all of the ideas in this chapter will be better able to earn their assigned marks, which will contribute considerably to their ultimate score on the Term II CBSE examination. Because the questions are drawn from the NCERT textbook recommended by the CBSE board, there is a good likelihood that they will feature in the CBSE Term II test. As a result, solutions are prepared in a timely manner.
The following is a list of subtopics covered in Chapter 13 – Why Do We Get Sick?
| Number | Subtopic |
| 13.1 | Health and its failure |
| 13.1.1 | The significance of ‘Health’ |
| 13.1.2 | Personal and community issues both matter for health |
| 13.1.3 | The distinction between healthy and disease-free |
| 13.2 | Diseases and their causes |
| 13.2.1 | What do diseases look like? |
| 13.2.2 | Acute and chronic diseases |
| 13.2.3 | Chronic diseases and poor health |
| 13.2.4 | Causes of diseases |
| 13.2.5 | Infectious and non-infectious diseases |
| 13.3 | Infectious diseases |
| 13.3.1 | Infectious agents |
| 13.3.2 | Means of spread |
| 13.3.3 | Organ-specific and tissue-specific manifestations |
| 13.3.4 | Principles of treatment |
| 13.3.5 | Principles of prevention |
Exercising Schedule
3 Question Number 13.1 – 13.1.3 (3 short)
Question 13.1.4 -13.2.5 Number 13.1.4 -13.2.5 (2 short)
Question number 13.3.5 5 (5 short)
Question 3: Exercise Solutions (2 long, 1 short)
Question 3: Exercise Solutions (1 long, 2 short)
Why do we get sick? NCERT Solutions for Class 9 Science Chapter 13 – Why do we get sick?
We will study numerous facets of health in this chapter, from the definition to the treatment of various disorders. The many sorts of diseases, such as infectious and non-infectious diseases, are also explored, as well as the distinction between being healthy and being disease-free.
We will learn about illness origins, pathogens, disease vectors, and how we are infected with diseases as a result of our physical surroundings in this chapter. The unit also provides information on various treatment options as well as the importance of public health and personal cleanliness through immunization and other techniques.
NCERT Solutions for Class 9 Science Chapter 13 – Why Do We Get Sick? Key Points
- The most crucial and relevant material regarding the issue has been extracted from NCERT Solutions for the chapter ‘Why do we fall ill?’
- The answers are succinct and to the point.
- To learn rapidly and remember effortlessly use pointers.
- The solutions have been created in such a way that they would get the best possible results.
- Wherever possible, use tabular columns.
NCERT Solutions for Class 9 Science Chapter 13 Frequently Asked Questions
What are the subjects and subtopics covered in NCERT Solutions for Class 9 Science Chapter 13?
The following are the themes and subtopics covered in Chapter 13 of NCERT Solutions for Class 9 Science:
13.1 Health and its failure
13.1.1 The significance of ‘Health’
13.1.2 Personal and community issues both matter for health
13.1.3 The distinction between healthy and disease-free
13.2 Diseases and their causes
13.2.1 What do diseases look like?
13.2.2 Acute and chronic diseases
13.2.3 Chronic diseases and poor health
13.2.4 Causes of diseases
13.2.5 Infectious and non-infectious diseases
13.3 Infectious diseases
13.3.1 Infectious agents
13.3.2 Means of spread
13.3.3 Organ-specific and tissue-specific manifestations
13.3.4 Principles of treatment
13.3.5 Principles of prevention
How can I get a perfect score on NCERT Solutions for Class 9 Science Chapter 13?
After completing extensive research on each idea, the NCERT Solutions for Class 9 Science Chapter 13 are created by highly experienced professors. Students can use these solutions to acquire a general sense of the concepts covered in this chapter while working on the textbook questions. Students can access the solutions both online and offline, depending on their needs. On INFINITY LEARN, solutions are provided in PDF format, which students can download and use to get their questions answered quickly.
Explain the concept of immunization as it is presented in NCERT Solutions for Class 9 Science, Chapter 13.
Immunization is the process of increasing the immune system of people by administering vaccines that assist the body fight infectious diseases. Students in Class 9 are encouraged to use INFINITY LEARN NCERT Solutions to obtain a better understanding of the key concepts. The solutions were created with the primary goal of assisting students in their preparation for the CBSE Term II test. The step-by-step explanations in plain English provide pupils the confidence they need to take the term-by-term exam without fear.
