CBSE · Class 11 · Biology · Chapter 1

The Living World

Introduction to the diversity and characteristics of living organisms.

6 lessons 45 min
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Lessons in this chapter

  1. 1Diversity in the Living WorldExplore the extraordinary range of life and why biology needs a shared system for identifying and grouping organisms.
  2. 2Identification, Scientific Names and Binomial NomenclatureLearn how an organism receives a universal scientific name and apply binomial nomenclature rules accurately.
  3. 3Classification, Taxonomy, Systematics and the Three DomainsUnderstand how taxonomic classification works, why it evolves, and how the three domains extend the textbook's hierarchy.
  4. 4Species, Genus and Family: The Closest Taxonomic RanksExplore species concepts and the nested relationships among species, genera and families through plant and animal examples.
  5. 5Higher Taxonomic Categories and Complete HierarchiesTrace families through orders, classes, phyla or divisions and kingdoms using the textbook's organisms and hierarchy diagram.
  6. 6Chapter Summary and PracticeIntegrate biodiversity, scientific naming, taxonomy, three domains, and the taxonomic hierarchy through mixed revision and extended practice.