The kingdom Protista consists of unicellular, colonial and multicellular organisms that contain a nucleus enclosed in a membrane. Another organelle found in protists, which are also eukaryotes, is the mitochondria. The protists are subdivided into three categories: plant-like, animal-like and fungi-like protists.Continue Reading
Examples of animal-like protists are amoebas, and plant-like protists are some types of algae and seaweed. Slime mold is an example of a fungi-like protist. Protists can be autotrophs, like the algae that make their own food, or heterotrophs that feed on other organisms.
Protists can move through organelles such as cilia, flagella or pseudopodia. Although most protists reproduce asexually, others are capable of sexual reproduction.
The kingdom Protista contains a very diverse group of organisms. They can range in size from microscopic amoeba to large seaweed.Learn more about Cells
Prokaryotic cells are single cells that evolved before eukaryotes, which are organisms whose cells contain nuclei and organelles. A prokaryotic cell has no true nucleus or membrane-bound structures called organelles. Prokaryotic cells are usually bacterial species.Full Answer >
The most significant importance of the kingdom Protista is as primary producers, and thus food sources, for other organisms, as well as generators of oxygen. Single-celled oceanic algae, which are members of Protista, actually produce the majority of atmospheric oxygen via photosynthesis. Protista are also important as pathogens, consumers and decomposers. In a few cases, as with coral and termites, they are also crucial symbiotes.Full Answer >
Kingdom Protista includes mostly unicellular, eukaryotic life forms that behave similar to animals, plants and fungi based upon how the organisms obtain nutrition from their environment. These creatures do not fit into other kingdoms of life, mostly live in water and have a nucleus in their cells.Full Answer >
A vacuole membrane, or tonoplast, is a lipid structure that surrounds and encases the vacuole. The membrane allows certain substances to flow in and out of the vacuole from areas of low concentration to high concentration. When necessary, the tonoplast stretches, allowing a great deal of fluid inside the vacuole.Full Answer >