Skip to main content
Super TutorResources
Chapter 16 of 19
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Diseases Cause and Control

ICSE · Class 9 · Biology

Quick revision notes for Diseases Cause and Control — ICSE Class 9 Biology. Key concepts, formulas, and definitions for last-minute revision.

42 questions42 flashcards5 concepts

Interactive on Super Tutor

Studying Diseases Cause and Control? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

1,000+ Class 9 students started this chapter today

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

Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.

Get started

Key Topics to Revise

1

1. Meaning and Classification of Diseases

  • Disease means the normal functioning of the body is disturbed.
  • Diseases may be serious, and some can become fatal.
  • Diseases are classified by extent of occurrence, communicability, kind of pathogen, and mode of transmission.
2

2. Germs That Cause Disease

  • Diseases are caused by pathogens, which are disease-causing organisms.
  • The main pathogen groups here are bacteria, viruses, protozoa, and helminths.
  • Bacterial diseases in the syllabus are cholera, typhoid, and tuberculosis.
3

3. Bacterial Diseases

  • Cholera attacks the intestinal tract and is caused by Vibrio cholerae.
  • Cholera spreads through food and water by the faeco-oral route, aided by flies.
  • Cholera causes vomiting, loose motions, very little urination, and dehydration.
4

4. Protozoan Diseases

  • Malaria is caused by Plasmodium and is transmitted by the bite of the female Anopheles mosquito.
  • Plasmodium grows and multiplies in red blood cells and destroys them.
  • The incubation period of malaria is about three weeks.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Disease is a condition inIncubation period is the period betweenCommunicable or infectious diseases are causedEndemic diseases are found inCholera

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 42 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 Revision Notes

For serious students

Get the full Diseases Cause and Control chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 9 Biology.

Try Super Tutor Free
Try the full chapter — Free