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Revision Notes

Hygiene a Key to Healthy Life — Revision Notes

ICSE · Class 9 · Biology

Hygiene a Key to Healthy Life revision notes for ICSE Class 9 Biology: 4 topics in quick points. Part of the ICSE Class 9 Biology syllabus.

44 questions38 flashcards5 concepts

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An infographic illustrating the main categories of hygiene: personal hygiene and social/public hygiene, with key components for each.
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Key Topics to Revise

1

1. Meaning and Branches of Hygiene

  • Hygiene means the science and practice of maintaining good health.
  • It includes caring for one's own body and taking proper care of surroundings.
  • Personal hygiene means keeping the body clean and healthy.
2

2. Personal Hygiene

  • Hands and skin must be cleaned regularly because many objects may carry germs.
  • Washing hands with soap after using toilets is very important.
  • A daily bath keeps the skin clean, removes body odours from perspiration, and keeps sweat pores open.
3

3. Disease Carriers and Their Control

  • Vector is any agent that acts as an intermediate carrier of the pathogen.
  • Housefly, mosquito, and cockroach are the main vectors given maximum priority for control.
  • Housefly is a natural scavenger, but it is also called Public Enemy No. 1 because it spreads many diseases.
4

4. Mosquitoes and the Diseases They Spread

  • Anopheles mosquito spreads malaria in man, monkeys, and birds.
  • The malaria germ is the protozoan Plasmodium.
  • Culex mosquito spreads elephantiasis, also called filariasis.

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Full Notes

Key Concepts

Hygiene is the science and practicePersonal hygiene includes cleanlinessSocial hygiene means keeping public placesA vector is any agentThe housefly is a natural scavenger

Frequently Asked Questions

What are the important topics in Hygiene a Key to Healthy Life for ICSE Class 9 Biology?
Key topics in Hygiene a Key to Healthy Life include Meaning and Branches of Hygiene, Personal Hygiene, Disease Carriers and Their Control, Mosquitoes and the Diseases They Spread. Study these first, then practise questions on each for Class 9 exams.
How should I revise Hygiene a Key to Healthy Life for Class 9 exams?
Learn the core ideas first, then work through the 44 practice questions on Hygiene a Key to Healthy Life. Revise 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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All ICSE Class 9 Biology Revision Notes

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