Organisms are divided into five major kingdoms. R.H Whittaker proposed the five kingdom classification in 1969. The most common system of classification in use today is the Five Kingdom Classification. In this system all living organisms are divided into five kingdoms:
The classification of living organisms according to Whittaker into five kingdoms namely are as follows:
Kingdo Monera - It consists of primitive organisms. The organisms are very small and single celled. They consists of prokarytotes which includes species like the bacteria, archae bacteria, cyanobacteria and mycoplasma.
Protista are single-celled eukaryotes and are mainlky aquatic. It includes diatoms, golden algae, euglena and protozoans like amoeba, paramoecium, plasmodium etc. They are mostly marine and photosynthetic.
Kingdom Mycota or Kingdom Fungi consists of network of thread-like structures called as mycelium. The bodies consists of long, thread-like structures which are called hyphae. These organisms are mostly saprophytes or parasites and also symbionts. This kingdom of fungi also includes lichens, mycorrhiza, etc.
Kingdom Metaphyta or Kingdom Plantae are eukaryotic, mutlicellular plants, They contain chlororphyll pigment, which helps them prepare their own food by the process of photosynthesis. This kingdom includes all types of plants like herbs, shrubs, trees, flowering and non flowering plants.
Example: rose plant, mango tree, etc.
Kingdom Animalia or Kingdom Metazoa are heterotrophic, eukaryotic, multicellular organisms. They lack cell wall. This kingdom includes all types of animals.
Example: lion, peacock, etc.