CBSE Class 9 Biology Notes for Chapter 3 Diversity in Living Organisms

  • by
                CHAPTER 3 DIVERSITY IN LIVING ORGANISMS
 
HIERACRCHY OF CLASSIFICATION- GROUPS
There are five groups/ kingdoms: Monera, Protista, Fungi, Plantae, Animalia
Monera

  • No defined nucleus or organelles.
  • Mode of nutrition: Autotrophic or heterotrophic
  • Includes bacteria, blue green algae, etc.

 
Protista

  • Unicellular eukaryotic organisms
  • Some organisms use appendages like cilia or flagella for moving around.
  • Mode of nutrition: Autotrophic or heterotrophic
  • Examples: Unicellular algae, protozoans

 
Fungi

  • Heterotrophic eukaryotic organisms
  • Use decaying organic material as food and therefore called saprophytes.
  • Some fungal species have symbiotic relationship with other life forms  such as algae.

 
Plantae

  • Multicellular eukaryotes
  • Have cell walls
  • Mode of nutrition: Autotrophic
  • Divided into 5 groups:
    • Thallophytes
    • Byrophytes
    • Pteridophytes
    • Gymnosperms
    • Anglosperms

 
Animalia

  • Multicellular eukaryotes
  • Do not have cell walls
  • Mode of nutrition: Heterotrophic
  • Divided into 10 groups:
    • Porifera
    • Coelenterata
    • Platyhelminthes
    • Nematoda
    • Annelida
    • Arthropoda
    • Mollusca
    • Echinodermata
    • Protochordata
    • Vertebrata

Leave a Reply

Your email address will not be published. Required fields are marked *