Animal Kingdom
The scientific name of Animals is “Animalia”. Thus, Kingdom Animalia is also refereed to as Animal Kingdom or Metazoa.
Animals are many celled motile organisms. They are divided into two major classes:
- invertebrates and
- vertebrates.
Invertebrate animals are those which do not have any backbone, e.g. earthworms, prawns, crabs, insects, snails, etc.
Both invertebrate and vertebrate animals are divided into smaller groups called phylum depending on the similarities.
Like plants, thousands of animals live on this earth which differs greatly in their sizes, forms, habits and habitats.