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Diseases and First Aid

ICSE · Class 8 · Biology

Quick revision notes for Diseases and First Aid — ICSE Class 8 Biology. Key concepts, formulas, and definitions for last-minute revision.

59 questions36 flashcards5 concepts

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Key Topics to Revise

1

Health and Disease

  • Health is a state of complete physical, mental, and social well-being.
  • Disease is a departure from normal health through structural or functional disorders of the body.
  • Physical health and mental health are inter-related.
2

Types of Diseases

  • Diseases are mainly of two types: communicable and non-communicable.
  • Communicable diseases are caused by pathogens and spread from infected to healthy persons.
  • Non-communicable diseases are not caused by germs and cannot spread from person to person.
3

Spread of Communicable Diseases

  • Communicable diseases spread by direct contact and indirect methods.
  • Direct contact spreads diseases such as measles, chicken pox, and fungal infections.
  • Indirect spread can happen through shared items, contaminated food and water, vectors, and droplet infection.
4

Important Communicable Diseases

  • Influenza causes cold, fever, and chills, and spreads through droplet infection.
  • Measles is a highly contagious viral infection with nasal discharge, redness of eyes, coughing, fever, and red papules.
  • AIDS is caused by HIV, which weakens the immunity or self-defence mechanism of the human body.

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Full Notes

Key Concepts

Health is a state of completeDisease is a departure from normalThese diseases are caused by pathogensThese diseases are not caused byPathogens are disease

Frequently Asked Questions

What are the important topics in Diseases and First Aid for ICSE Class 8 Biology?
Diseases and First Aid covers several key topics that are frequently asked in ICSE Class 8 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 and First Aid — ICSE Class 8 Biology?
Understand the core concepts first, then work through the 59 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.

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