5 Kingdoms of Life


Kingdom Animalia

- Kingdom Animalia is also called as Metazoa

- Does not contain the prokaryotes or the protists

- All members of Animalia are multicellular and heterotrophs (rely directly or indirectly on other organisms for their nourishment)

- Most of the K.Animalia ingest and digest food in their internal cavity

- Animal cells lack the rigid cell walls that characterze plant cells

- Bodies of most animals are made up of cells organized into tissues and each tissue is further organized into specialized organs

- Most Animals are capable of complex and relatively rapid movement compared to plants and other organisms

- Most Animals reproduce sexually

- Most Animals are diploid

- Between 3 to 30 million species of animals inhabit in the Earth, only a rough estimate could be made

- Range in size from microscopic animals such as plankton to massive blue whales.

- Largest subgroup of animals is the insects

- Animals are thought to have evolved from flagellate protozoa and the oldest animal fossils date back 600 million years, to the latter part of precambrian.

- Most major groups of animals evolved during the Cambrian period

Phyla of Kingdom Animalia


Example of Kingdom Animalia - Canis lupus familiaris

Domain- Eukarya
    Kingdom- Animalia
        Phylum- Chordata
                Class- Mammalia
                    Order- Carnivora
                        Family- Canidae
                            Genus- Canis
                                Species- Canis lupus
                                             Subspecies- Canis lupus familiaris (Dog)

Example of Kingdom Animalia - Felis catus

Kingdom - Animalia
    Phylum - Chordata
        Class - Mammalia
            Order - Carnivora
                Family - Felidae
                    Genus - Felis
                        Species - Felis catus (House Cat)

Example of Kingdom Animalia - Orcinus orca

Kingdom - Animalia
    Phylum - Chordata
        Class - Mammalia
            Order - Cetacea
                Family - Delphinidae
                    Genus - Orcinus
                        Species - Orcinus orca (Killer Whale)

Summary of K.Animalia


Characteristics of Animalia Kingdom:
  1. Eukaryote
  2. Multicellular
  3. Heterotrophic
  4. Terrestrial and Aquatic
  5. Sexual ( a few asexual)
  6. Motile ( a few are nonmotile)

Examples: sponges, jellyfish, mollusks, round worms, flat worms, segmented worms, arthropods, starfish, fish, amphibians, reptiles, birds, mammals