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Syllabus

Five Kingdom Classification — Syllabus

ICSE · Class 9 · Biology

What Five Kingdom Classification covers in ICSE Class 9 Biology: 4 topics, for the 2026-27 session. Part of the ICSE Class 9 Biology syllabus.

41 questions40 flashcards5 concepts

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An infographic summarizing the universal rules of binomial nomenclature, including Latin origin, italicization/underlining, capitalization of genus, lowercase for species, and author citation, with ex
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4 Topics · ICSE Class 9 Biology · 2026-27

Topics in Five Kingdom Classification

1

1. Levels of Classification

  • The taxonomic hierarchy from highest to lowest is: Kingdom → Phylum → Class → Order → Family → Genus → Species.
  • Species is the lowest category and kingdom is the largest division of living beings.
  • All individuals of a species can normally interbreed among themselves.
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2. Species and Scientific Naming

  • Species means an organism of a particular kind whose members can interbreed among themselves to produce fertile young ones.
  • All house cats belong to one species: Felis domesticus.
  • All mankind belongs to one species: Homo sapiens.
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3. Drawbacks of the Old Two-Kingdom Classification

  • The old classification divided living organisms into Plantae and Animalia.
  • Bacteria and fungi are not plants because they have no chlorophyll and do not carry out photosynthesis.
  • Some unicellular organisms such as Euglena cannot be called only plant or only animal.
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4. The Five Kingdoms

  • The five kingdoms are Monera, Protista, Fungi, Plantae and Animalia.
  • Monera organisms are unicellular and prokaryotic.
  • Monera have no organized nucleus and no membrane-bound organelles.

Key Concepts

Central concept: Classification of living organisms into five kingdoms based on cell structure, body organisation, and mode of nutrition

SpeciesGenusFamilyOrderClassPhylumKingdomOld two kingdom classification

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Frequently Asked Questions

What are the important topics in Five Kingdom Classification for ICSE Class 9 Biology?
Key topics in Five Kingdom Classification include Levels of Classification, Species and Scientific Naming, Drawbacks of the Old Two-Kingdom Classification, The Five Kingdoms. Study these first, then practise questions on each for Class 9 exams.
How should I revise Five Kingdom Classification for Class 9 exams?
Learn the core ideas first, then work through the 41 practice questions on Five Kingdom Classification. 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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