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Revision Notes

The Living World

CBSE · Class 11 · Biology

Quick revision notes for The Living World — CBSE Class 11 Biology. Key concepts, formulas, and definitions for last-minute revision.

153 questions76 flashcards5 concepts

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Key Topics to Revise

1

Diversity in the Living World

  • Living organisms occur in a huge variety of forms and habitats.
  • Each different kind of plant, animal, or organism is a species.
  • The number of known and described species ranges between 1.7 and 1.8 million.
2

Nomenclature and Binomial Nomenclature

  • Nomenclature is the standardisation of naming living organisms.
  • Scientific naming gives each organism only one universal name.
  • Plants are named under ICBN, and animals under ICZN.
3

Classification and Taxonomy

  • Classification groups organisms into convenient categories based on observable characters.
  • Taxa are the categories used in classification.
  • Taxonomic hierarchy is the ordered arrangement of categories from species to kingdom.
4

Taxonomic Categories: Species to Kingdom

  • Species is the lowest taxonomic category for both plant and animal kingdoms.
  • Genus is a group of related species with more characters in common than species of other genera.
  • Family is a group of related genera with fewer similarities than genus.

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Full Notes

Key Concepts

The living world contains a veryNomenclature is the standardised namingIdentification is the correct recognitionBinomial nomenclature is the twoMangifera indica is the scientific name

Frequently Asked Questions

What are the important topics in The Living World for CBSE Class 11 Biology?
The Living World covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in The Living World — CBSE Class 11 Biology?
Understand the core concepts first, then work through the 153 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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