Overview of Animal Kingdom and Diversity

Animal Diversity

• Diversity of Life: Animal groups classified into various categories include:
  • Plants
  • Molluscs: Soft-bodied animals, often with shells.
  • Crustaceans: Crustaceans are arthropods with a hard exoskeleton and typically aquatic habitats.
  • Protozoans: Single-celled organisms classified as protists.
  • Chordates: Animals with a notochord, including mammals, birds, reptiles, amphibians, and fish.
  • Other Groups:
  • Bacteria: Unicellular microorganisms without a nucleus.
  • Viruses: Acellular agents that require a host to replicate.
  • Fungi: Spore-producing organisms feeding on organic matter.
  • Algae: Simple photosynthetic organisms, often aquatic.
  • Arachnids: Joint-legged invertebrates including spiders and scorpions.
  • Nematodes: Also known as roundworms, they are elongated and cylindrical.
  • Insects: The most diverse group of animals, characterized by a three-part body structure.