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Chapter Summary

Diseases Cause and Control

ICSE · Class 9 · Biology

Summary of Diseases Cause and Control for ICSE Class 9 Biology. Key concepts, important points, and chapter overview.

45 questions25 flashcards5 concepts

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An infographic illustrating the four categories of diseases based on their extent of occurrence: Endemic, Epidemic, Pandemic, and Sporadic, with examples for each.
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Overview

Disease is a condition where the normal functioning of the body is disturbed. Understanding different types of diseases, their causes, modes of transmission, and prevention methods is crucial for maintaining good health. This chapter explores various categories of diseases and helps us learn how to

Key Concepts

Disease is a departure from normal

Disease is a departure from normal health through structural or functional disorder of the body. It disrupts the normal functioning of body systems.

A disease found in a certain

A disease found in a certain area only, attacking fewer people. Example: goitre in sub-Himalayan regions, yellow fever in certain African countries.

A disease that breaks out

A disease that breaks out and spreads from place to place affecting large numbers of people at the same time. Example: plague in India in 1994.

A disease that is widely distributed

A disease that is widely distributed worldwide. Example: AIDS affecting people across all continents.

Diseases caused by pathogens that can

Diseases caused by pathogens that can spread from one person to another through various modes of transmission. Include bacterial, viral, protozoan, an

Learning Objectives

  • Understand what constitutes a disease and how it affects normal body functions
  • Classify diseases based on extent of occurrence (endemic, epidemic, pandemic, sporadic)
  • Distinguish between communicable and non-communicable diseases
  • Identify bacterial diseases like cholera, typhoid, and tuberculosis with their symptoms and prevention
  • Learn about viral diseases including AIDS, chicken pox, and hepatitis

Frequently Asked Questions

What are the important topics in Diseases Cause and Control for ICSE Class 9 Biology?
Diseases Cause and Control covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Diseases Cause and Control — ICSE Class 9 Biology?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Diseases Cause and Control

All 19 chapters — ICSE Class 9 Biology Chapter Summary

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