Protists space a diverse group of eukaryotic organisms belonging come Kingdom Protista. There are couple of similarities between individual members the this Kingdom, as it consists of all the eukaryotes that are not animals, plants, or fungi.

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Most protists room microscopic and also unicellular, despite a few species are multicellular. Typically, protists give birth asexually, though some are qualified of sex-related reproduction. Part protists room heterotrophs, and feed on other microscopic organisms and also carbon-rich materials they discover in their surrounding environment; others room photosynthetic and also make their own food making use of chloroplasts.

Protists might be classified as animal-like, fungus-like, or plant-like

Classification that Protists

Protists are always eukaryotic, and also all protists save on computer a nucleus and other membrane-bound organelles. They are frequently unicellular organisms, though a few are multicellular. Protists live in aquatic environments and also may be found in freshwater, saltwater, or damp soil habitats.

Besides these features, the members of Kingdom Protista have little in common with one another. Protists come in a wide selection of various forms and also may be classified as animal-like, plant-like, or fungus-like, depending on their characteristics.

Animal-like Protists

Animal-like protists are calledprotozoa(meaning ‘first animal’). Every protozoans room unicellular and also heterotrophic, an interpretation they seek out food in their neighboring environments. Part animal-like protists prey on other, smaller microorganisms, which lock engulf and digest in a procedure known asphagocytosis.Others may feed ~ above non-living, organic matter.Many protozoa have a mouthlike structurethrough which they have the right to ingest food particles, while some absorb nutrients through their cell membrane.

Protozoa frequently have digestive secret but, uneven other species of protists, they nothing contain chloroplasts. Animal-like protists also lack a cell wall.

Animal-like protists are called protozoa

Examples of Animal-like Protists

There are four main types of animal-like protists; these space the amoeba, the flagellates, the ciliates, and the sporozoans.

Amoeboid Protozoans

Amoeba are defined by the presence of pseudopodia, or ‘false feet,’ which they usage to catch bacteria and also smaller protists.

Amoeba have actually pseudopods (AKA ‘false feet’)

Flagellated Protozoans

Flagellates haveflagella,whip, or tail-like frameworks which they usage to propel themselves with water. Part flagellates room parasitic, when others are free-living.

Ciliated Protozoans

Ciliates room covered incilia,tiny hair-like structures which they use to move around and also waft food right into their mouths.

Ciliates space covered in tiny, hair-like structures


Sporozoans room parasitic organisms. One famous instance isPlasmodium,the parasite well-known to cause malaria.

Fungus-like Protists

Fungus-like protists are known asmolds.Like true fungi, they space heterotrophic feeders and also absorb nutrient from disk organic matter in your environment. They also reproduce utilizing spores. However, they differ from true mushroom in the their cell wall surfaces contain cellulose, rather than chitin.

Examples the Fungus-like Protists

The two significant types that fungi-like protists room slime molds and also water molds.

Slime Molds

Slime molds are often found on rotting logs, wherein they feed on decaying essential matter. These molds are often unicellular but, when food is scarce, have the right to swarm together to form a slimy mass. This brightly colored blobs can move an extremely slowly in their find for food and, in part cases, have the right to fuse to type one enormous, multinucleated cell.

Slime molds can form multicellular structures

Water Molds

Water molds commonly live on the surface of water, or in damp soil and, like slime molds, feed on decaying essential matter. This group consists of several plant pathogens, consisting of the disastrous potato disease known together potato blight.

Some fungus-like protists cause serious tree diseases

Plant-like Protists

Plant-like protists (AKAalgae) are usually photosynthetic organisms, and also most save on computer chloroplasts and/or chlorophyll. Algal cell usually have actually a cell wall which, like the cell walls of true plants, save cellulose. However, uneven true plants, algae lack leaves, stems, and roots. Plant-like protists might reproduce asexually or sexually.

Most algal varieties are unicellular, despite some type large, multicellular structures (for example,seaweeds). Plant-like protists live in aquatic environments and most varieties are uncovered in oceans, lakes, and also ponds.

Plant-like protists are dubbed algae

Examples that Plant-like Protists

The 7 major groups that algae room red algae, green algae, brown algae, fire algae, golden-brown algae, yellow-green algae, and euglenids.

Red Algae

Red birds are typically found in tropical marine settings where they often prosper on flat surfaces, such together reefs. Despite red algae might be unicellular, they are generally multicellular organisms and kind a range of seaweeds.

Red algae deserve to be multicellular seaweeds

Green Algae

Green algae room the most abundant group of algae. Castle contain chloroplasts and also cell walls and are thought to it is in the evolutionary ancestors of land plants. Eco-friendly algae may be uncellular cells or multicellular.

Brown Algae

Brown birds are generally found in naval environments. They space multicellular organisms and type a variety of plant-like species. The biggest known example of brown birds is the large kelp, which frequently grows to end 30m in length.

Giant kelp is the largest species of maritime algae

Fire Algae

Fire algae include a team of unicellular organisms called thedinoflagellates.Some dinoflagellates arebioluminescentand can light increase the surface ar of the s with one eerie, night-time glow. When current in big numbers, dinoflagellates can additionally cause a phenomenon known as ‘red tide.’

Golden-brown Algae and Diatoms

Golden-brown algae have the right to be uncovered in both marine and also freshwater environments. This group includes thediatoms,photosynthetic organisms through transparent cell wall surfaces made the silica. Many species of naval plankton room diatoms.

Many varieties of marine plankton space diatoms

Yellow-green Algae

Yellow-green algae room photosynthetic organisms that live mainly in freshwater environments. Many have a cell wall that does not contain cellulose (as in plants and algae) or chitin (like fungi and also molds). The cell wall composition the yellow-green algae isalmost totally unknown.

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Euglena room photosynthetic birds that are uncovered in a range of aquatic habitats. Euglenids commonly have one or more flagella however lack a cabinet wall, and also are rather encased by a protein-rich structure called apellicle.