Diseases Cause and Control — Chapter Summary
ICSE · Class 9 · Biology
Summary of Diseases Cause and Control for ICSE Class 9 Biology. Part of the ICSE Class 9 Biology syllabus. Disease is a departure from normal health.
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Overview
Disease is a departure from normal health through structural or functional disorder of the body. Diseases are caused by germs or by poor functioning of the body, and they can be grouped by their spread, cause, and mode of transmission. Some diseases spread through food, water, air, contact, blood, o
Key Concepts
Disease is a condition in
Disease is a condition in which the normal functioning of the body is disturbed. It may be mild and temporary or serious and even fatal.
Incubation period is the period between
Incubation period is the period between the entry of germs and the appearance of the first symptoms of the disease. It may range from a few hours to m
Communicable or infectious diseases are caused
Communicable or infectious diseases are caused by pathogens and can spread from one person to another. Non-communicable or non-infectious diseases do
Endemic diseases are found in
Endemic diseases are found in a certain area, epidemic diseases spread rapidly in many places at the same time, pandemic diseases spread worldwide, an
Cholera
Cholera, typhoid, and tuberculosis are bacterial diseases. Cholera attacks the intestinal tract, typhoid attacks the intestines, and tuberculosis usua
Learning Objectives
- Understand the meaning of disease and incubation period
- Classify diseases as communicable and non-communicable
- Recognize endemic, epidemic, pandemic, and sporadic diseases
- Identify major bacterial, protozoan, helminthic, and viral diseases
- Learn common modes of transmission and prevention
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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