Kingdom Fungi

            A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and moulds), as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi, which is separate from plants, animals, and bacteria. One major difference is that fungal cells have cell walls that contain chitin, unlike the cell walls of plants, which contain cellulose.There are about 40 000 different kinds of fungi. 

             

            These are organisms without chlorophyll, have heterotrophic mode of nutrition.Fungi have evolved to use a lot of different items for food. Some are decomposers living on dead organic material like leaves. Some fungi cause diseases by using living organisms for food. These fungi infect plants, animals and even other fungi. Athlete’s foot and ringworm are two fungal diseases in humans. The mycorrhizal fungi live as partners with plants. They provide mineral nutrients to the plant in exchange for carbohydrates or other chemicals fungi cannot manufacture.

             

                   They have wide variety of organisms which range from yeasts, fungi to mushrooms. The branch of science which deals with disease causing fungi is known as Fungal Pathology. Saprotrophic organisms are known as decomposer as their organic food comes from dead and decayed matter.Mycology is the branch of biology which deals with the study of fungi.

Example :

•  Rust
• Smut
• Truffles
• Mushrooms 
• Yeast

Kingdom Protista

      Protists are a diverse group of eukaryotic microorganisms. Historically, protists were treated as the kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms, but this group is contested in modern taxonomy. Instead, it is "better regarded as a loose grouping of 30 or 40 disparate phyla with diverse combinations of trophic modes, mechanisms of motility, cell coverings and life cycles."

       The protists do not have much in common besides a relatively simple organization either they are unicellular, or they are multicellular without specialized tissues. This simple cellular organization distinguishes the protists from other eukaryotes, such as fungi, animals and plants.Some members of Kingdom Protista are unicellular, others are colonial, and yet others are multicellular. Note that in the colonial forms, all the cells are similar with similar, generalized functions, whereas in the truly multicellular species, the “body” of the organism consists of a variety of types of cells, each type with its own specialized function. These organisms are all eukaryotes (they have a true nucleus). They all need some kind of a water-based environment--which can be fresh or marine water, snow, damp soil, polar bear hairs--in which to live. All are aerobic and have mitochondria to do cellular respiration, and some have chloroplasts and can do photosynthesis. Most of them reproduce or grow by mitosis, and some reproduce by meiosis and fertilization. Many can form cysts in adverse conditions. Protists are a major component of plankton.

                Examples

• Paramecium
• Amoeba 
• Giardia
• Trichonympha

Five kingdom classification

 Five kingdom classification

This is the five kingdom classification given by scientist Whittaker (1969).This scheme was based on -

• Structure of Cells - {prokaryotic or eukaryotic }
• Structure of Organism - {unicellular or Multicellular}
• Mode of nutrition - Photosynthesis in green plants, absorption in fungi and ingestion in animals. 

1.  Kingdom Monera
2.  Kingdom Protista
3.  Kingdom Fungi
4.  Kingdom Plantae
5.  Kingdom Animalia