# NCERT Solutions for Class 9 Science Chapter 13 Why Do We Fall ill?

### Let us start reading the preparation article Regarding CBSE 9 Class

NCERT Solutions for Class 9 Science Chapter 13 - Why Do We Fall ill?: You will study that health is a state of physical, mental and social well-being. The health of an individual is dependent on his/her physical surroundings and his/her economic status. Diseases are classified as acute or chronic, depending on their duration. The disease may be due to infectious or non-infectious causes. Infectious agents belong to different categories of organisms and may be unicellular and microscopic or multicellular. The category to which a disease-causing organism belongs decides the type of treatment. Infectious agents are spread through the air, water, physical contact or vectors. Prevention of disease is more desirable than its successful treatment. Infectious diseases can be prevented by public health hygiene measures that reduce exposure to infectious agents. Infectious diseases can also be prevented by using immunization.

Here are the important Topics of NCERT Solutions for Class 9 Science Chapter 13 - Why Do We Fall ill? mentioned below:

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 Distinctions Between ‘healthy’ and ‘disease-free’

13.2 Disease and Its Causes

13.2.1 What Does Disease 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 Causes

13.3 Infectious Diseases

13.3.1 Infectious Agents

13.3.3 Organ-specific and Tissue-specific Manifestations

13.3.4 Principles of Treatment

13.3.5 Principles of Prevention

After going through this chapter, you must be able to get the NCERT Solution of these questions which are mentioned below, as these questions are from NCERT.

Q1. 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?

Q2. 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?

If you have any problem in answering these questions or you are not getting the correct answers then don't worry, NCERT Solutions for Class 9 Science Chapter 13 - Why Do We Fall ill? is there for you to help. Solutions for NCERT Class 9 Science Chapter 13 - Why Do We Fall ill? will give you answers to all the questions which are mentioned in the NCERT book.

First of all, try to answer all the questions by yourself. Then, if you need any help, will suggest you the best answer written by our experts.

## NCERT Solutions for Class 9 Science- Chapter Wise

 Chapter No. Chapter Name Chapter 1 Matter in Our Surroundings Chapter 2 Is Matter Around Us Pure Chapter 3 Atoms and Molecules Chapter 4 Structure of The Atom Chapter 5 The Fundamental Unit of Life Chapter 6 Tissues Chapter 7 Diversity in Living Organisms Chapter 8 Motion Chapter 9 Force and Laws of Motion Chapter 10 Gravitation Chapter 11 Work and Energy Chapter 12 Sound Chapter 14 Natural Resources Chapter 15 Improvement in Food Resources