Class 9 Exam > Class 9 Notes > Chemistry for Class 9 > Worksheet: Why do we fall ill
Why do we fall ill Class 9 Worksheet Science
Q.1. Fill in the blanks
(i) The ______ system helps in reducing the number of microbes in body and thus controls the disease.
(ii) _______are the animals that can carry the pathogen from unhealthy person to a healthy person.
(iii) _______ is caused by bacteria Salmonella typhi.
(iv) Genetic disorders of deficiency of nutrient are the examples of factors that can cause ______ diseases.
(v) _______ disease is a long duration, slow developing, disabling disease.
Q.2. Which one of the following causes kala-azar?
(a) Ascaris
(b) Trypanosome
(c) Leishmania
(d) Bacteria
Q.3. If you live in a overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases.
(a) Cancer
(b) AIDS
(c) Air borne diseases
(d) Cholera.
Q.4. The chemical that kill or stop the growing of certain kinds of microbes are called-
(a) Vaccines
(b) Microbes
(c) Antibiotics
(d) Fungi
Q.5. Which one of the following is not important for individual health?
(a) Living in clean space
(b) Good economic condition
(c) Social equality and harmony
(d) Living in a large and well-furnished house.
Q.6. Name the approaches generally adopted to treat infectious diseases.
Q.7. How are diseases diagnosed by physician?
Q.8. Which bacterium causes peptic ulcers? Who discovered the above pathogen?
Q.9. What is peptic ulcer?
Q.10. Define carriers. Give two examples.
Q.11. What are the different aspects of maintaining good health?
Q.12. What are the causes of diseases?
Q.13. What are the means of spread of diseases?
Q.14. What is inflammation? What are the changes occur during inflammation?
Q.15. What precautions can you take in your school to reduce the incidence of infectious diseases?
The document Why do we fall ill Class 9 Worksheet Science is a part of the Class 9 Course Chemistry for Class 9.
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FAQs on Why do we fall ill Class 9 Worksheet Science
| 1. What are the common causes of falling ill? |  |
Ans. Falling ill can be caused by various factors such as viral or bacterial infections, poor hygiene practices, weak immune system, unhealthy lifestyle choices, and environmental factors like pollution.
| 2. How does a weak immune system contribute to falling ill? | |
Ans. A weak immune system makes the body more susceptible to infections and diseases. It fails to effectively fight off harmful pathogens, making it easier for individuals to fall ill.
| 3. Can stress and mental health affect our chances of falling ill? | |
Ans. Yes, prolonged stress and poor mental health can weaken the immune system, making individuals more prone to falling ill. Stress hormones can suppress the immune system's response, making it less effective in fighting off infections.
| 4. How can poor hygiene practices lead to falling ill? | |
Ans. Poor hygiene practices like not washing hands regularly, not maintaining cleanliness in living spaces, and not following proper food handling techniques can lead to the transmission of diseases-causing germs. This increases the chances of falling ill.
| 5. What lifestyle choices can contribute to falling ill? | |
Ans. Unhealthy lifestyle choices such as a sedentary lifestyle, poor diet, lack of exercise, smoking, excessive alcohol consumption, and inadequate sleep can weaken the immune system and increase the risk of falling ill.
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Dec 24, 2024 Last updated |
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