CBSE · Class 11 · Biology · Chapter 2

Biological Classification

Five-kingdom classification and biological diversity.

10 lessons 150 min
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Lessons in this chapter

  1. 1Why Biological Classification ChangedUnderstand why two kingdoms were inadequate and how five-kingdom classification uses cellular, nutritional and evolutionary criteria.
  2. 2Kingdom Monera: Bacterial Shapes and ArchaeaStudy bacterial shapes, prokaryotic structure, habitats and the distinctive biology of archaea.
  3. 3Eubacteria, Cyanobacteria and MycoplasmaHow common bacteria make food, recycle nutrients, reproduce and interact with living organisms.
  4. 4Kingdom Protista: Diatoms, Dinoflagellates and EuglenoidsUnderstand major photosynthetic and mixotrophic protists through their cell structures and ecological roles.
  5. 5Slime Moulds and Major Protozoan GroupsExplore how slime moulds and heterotrophic protists move, feed, disperse and sometimes cause disease.
  6. 6Kingdom Fungi: Hyphae, Nutrition and ReproductionUnderstand fungal cell structure, methods of absorbing nutrients, symbiotic relationships and the sequence of sexual reproduction.
  7. 7Fungal Groups: Phycomycetes to DeuteromycetesCompare four traditional fungal groups by hyphal structure, spores, sexual processes, habitats and familiar species.
  8. 8Kingdom Plantae, Animalia and Alternation of GenerationsCompare plants and animals and understand how haploid and diploid phases alternate during plant life cycles.
  9. 9Viruses, Viroids, Prions and LichensDistinguish acellular infectious agents and discover how fungal–photosynthetic partnerships form lichens.
  10. 10Chapter Summary and PracticeReview five-kingdom classification, prokaryotes, protists, fungal reproduction, plant and animal traits, and acellular agents.