CBSE Class 9 Science – Diversity in the Living World

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Study Materials

9th

9th - Science

Diversity in the Living World

Chapter Overview

This chapter focuses on the vast diversity of life forms and their classification based on similarities and differences. It explains the need for classification, different classification systems, and how living organisms are grouped into hierarchical categories. The five-kingdom classification system by Whittaker is also discussed in detail.

Important Keywords

  • Biodiversity: Variety of life forms on Earth.
  • Taxonomy: Science of classification.
  • Binomial Nomenclature: System of naming organisms with two names (Genus & Species).
  • Five-Kingdom Classification: Monera, Protista, Fungi, Plantae, and Animalia.
  • Hierarchy of Classification: Kingdom → Phylum → Class → Order → Family → Genus → Species.
  • Autotrophs: Organisms that make their own food.
  • Heterotrophs: Organisms that depend on others for food.
  • Vertebrates: Animals with a backbone.
  • Invertebrates: Animals without a backbone.

Detailed Notes

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