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Why do we fall ill Important Questions





Given below are the Why do we fall ill Important Questions for Class 9 Biology
a. Concepts questions
b. Multiple choice questions
c. Long answer questions

Long Answer Questions

1. ‘Prevention is better than cure’. Justify the statement with three reasons?
2. Explain the process of inflammation? Mention the local effects and the general effects of inflammation?
3. Name any two groups of microorganisms from which antibiotics can be extracted?
4. Mention any three basic conditions required for good health?
5. Why are we normally advised to take blend and nourishing food when we are sick?
6. Why a person suffering from AIDS cannot fight even small infections?
7. In a slum area, many people are suffering from malaria. Mention any two unhygienic conditions that must be prevailing in that locality?
8. Why female Anopheles mosquito feeds on human body?
9. With the diagram only, depict the common methods of transmission of diseases?
10. During a health check up camp in a school, the doctor talked about prevention of diseases. Which main points will you share with your friends on “prevention of diseases is more desirable than its successful treatment”?

11. Differentiate between communicable and non-communicable diseases?
12. ‘Over crowded and poorly ventilated housing is a major factor in the spread of airborne diseases’. Explain the statement and support your answer with diagram also?
13. Arun is having headache and fever. He takes some pills to bring down the fever and headache before going to the doctor. What is this type of treatment called? How can we reduce the effects of the diseases? What is the limitation of this type of treatment? What is the possible remedy of these diseases?
14. Write a brief note on peptic ulcers?
15. Health is not merely absence of diseases. How can we define health? Classify diseases on the basis of:
a) Duration of the diseases.
b) Cause of the diseases.
16. Penicillin is not effective against common cold. Why?
17. Mention any two preventive measures given to the patient after a rabid animal bites?
18. 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?
19. Mention any five common preventive measures against infectious diseases?
20. AIDS is a syndrome which damages body’s immune system.
a.Name the causative agent of the disease.
b.List four ways through which the AIDS pathogen enter the body of a healthy person?

Multiple choice questions

21. Which one of the following is not a viral disease?
(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza
22. Which one of the following is not a bacterial disease?
(a) Cholera
(b) Tuberculosis
(c) Anthrax
(d) Influenza
23. Which one of the following disease is not transmitted by mosquito?
(a) Brain fever
(b) Malaria
(c) Typhoid
(d) Dengue
24. Which one of the following disease is caused by bacteria?
(a) Typhoid
(b) Anthrax
(c) Tuberculosis
(d) Malaria
25. Which one of the following diseases is caused by protozoans?
(a) Malaria
(b) Influenza
(c) AIDS
(d) Cholera

Concepts questions

26. Classify the following diseases as infectious or non-infectious.
(a) AIDS
(b) Tuberculosis
(c) Cholera
(d) High blood pressure
(e) Heart disease
(f) Pneumonia
(g) Cancer



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Class 9 Maths Class 9 Science
Reference Books for class 9 science

Given below are the links of some of the reference books for class 9 science.

These books by S.Chand Publications are detailed in their content and are must have books for class 9 students.
  1. Science for Ninth Class Part1 Physics
  2. Science for Ninth Class Part2 Chemistry
  3. Science for Ninth Class Part3 Biology
Some other books that might be worth considering are
  1. Oswaal CBSE Question Bank Class 9 Science Chapterwise & Topicwise We all know importance of practicing what we have studied. This book is perfect for practicing what you have learned and studied in the subject.
  2. Pearson Foundation Series (IIT-JEE/NEET) Physics, Chemistry, Maths & Biology for Class 9 (Main Books) | PCMB Combo These Foundation books would be helpful for students who want to prepare for JEE/NEET exams. Only buy them if you are up for some challenge and have time to study extra topics. These might be tough for you and you might need extra help in studying these books.
  3. Foundation Science Physics for Class - 9 by H.C. Verma This is one of my favorite Physics book for class 9. Most of the book is within the limits of CBSE syllabus. It might overwhelm you with its language but I feel if you can understand the content is authentic with plenty of problems to solve.

You can use above books for extra knowledge and practicing different questions.







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