Classification of Living Things

After completion of this lesson, student must be able to:

  • Classify nonflowering plants up to subdivision and explain their characters with suitable example.
  • Classify invertebrate animal up to phylum and explain their characters with different examples.

Notes

Classification of Living Things

The arrangement of organisms into groups based on particular characters is called classification. The system of assigning two names, first generic name and second specific name in Latin to an organism is called binomial system of nomenclature. This note provides us the information about classification and its importance.

Plant Kingdom

Plant kingdom includes all the unicellular and multicellular plants. Cryptogams are primitive and simplest plants while all kinds of flowering plants are called phanerogams. Algae include all those thallophytes which contain green pigment as chlorophyll. This note provides us the information about plant kingdom and it's classification with example.

Animal Kingdom I

On the basis of presence or absence of vertebral column, animal kingdom is divided into invertebrate and vertebrate. The animals which lack backbone are called invertebrates. This note provides us the information about the animal kingdom, protozoa, Porifera, coelenterates, Platyhelminthes, and Annelida.

Animal Kingdom II

Phylum protozoa includes small, microscopic animals. Poriferons are aquatic and most of them are marine. Coelenterates are hollow and tubular and their cells are much more specialized than sponges. This note provides further information about classification of animal kingdom.