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Protozoa
Protozoans are unicellular organisms found in many different habitats. They are eukaryotic and can be predators, herbivores or parasites, depending upon the species. The well-known disease malaria is caused by a protozoa.
1,445 Questions
yes they do ----------------------- how they digest- if interested... credit: http://answers.yahoo.com/question/index?qid=20080314060010AAHwv5K OKIM IM's original work Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather its food, the paramecium uses its cilia to sweep the food along with some water into the cell mouth after it falls into the oral groove. The food goes through the cell mouth into the gullet, which is like the stomach. When enough food has accumulated, it breaks away and forms a food vacuole. The food vacuole travels through the cell, through the back end first. As it moves along, enzymes from the cytoplasm enter the vacuole and digest it. The digested food then goes into the cytoplasm and the vacuole gets smaller and smaller. When the vacuole reaches the anal pore the remaining undigested waste is removed.
In the case of paramecium, ingestion is getting the food particle into the food vacuole. Digestion is the enzymatic breakdown of food.
What are amoeba characteristics?
amoeba are a single celled life form, a single celled organism and measured to be around 0.25 mm!
Why fresh water protozoa bear contractile vacoule?
Because their membranes are not selectively permeable and let water through. These vacuoles fill up with water in order to collect water and make sure the protists don't overflow and overfill with water and explode. After the vacuoles are full they release the water back into the environment.
Euglena is a single-celled organism that is similar to algae in that they both perform photosynthesis. However, euglena is considered a protist while algae can encompass a diverse group of photosynthetic organisms including seaweeds and microscopic phytoplankton.
What is the difference between protists and bacteria?
Bacteria are prokaryotic, unicellular organisms. The cell structure is clearly different in having no true nucleus nor membrane surrounded organelles.
Some protists are unicellular, eukaryotic organisms with a true nucleus and membrane-bound organelles.
Are dinoflagellate a algae or a protozoa?
Dinoflagellates are actually neither plants nor animals. They are single-celled organisms and are, in fact, members of the Protist kingdom. They are plankton and can be either zooplankton or phytoplankton, which means they can be plant-like (photosynthetic producers) or animal-like (heterotrophic consumers).
No. Amoeba and ciliates are two groups of protozoan parasites. The amoeba are unicellular, which are characterized by the pseudopodia. Ciliates are protozoa, unicellular and use cilia on their surface.
How does a euglena use to move?
Euglena are flagellated unicellular organisms, so they move by beating their flagella.... somewhat like a tadpole.
What is the difference between euglena and paranema?
Euglena, Paramecium and Amoeba are all monocellular organisms. The major difference lies in their mode locomotion. The amoeba moves with the help of its pseudopodia, that are temporary protrusions of cytoplasm, giving leg like appearance. In paramecium, there are small outgrowths that are called as Cilia (Sing. Cilium). These cilia are thousands in number and are present all over the cells' surface. They act like an oar. Finally, Euglena have Flagellum (plur. flagella). A flagella beats like a whip to provide driving force for the movement.
Apart from this, both Euglena and Paramecium have a fixed body shape but amoeba continuously keeps on changing its shape . Amoeba and Paramecium are heterotrophic and lack chloroplast while Eugena has chloroplasts and could synthesise its own food. Amoeba and Euglena are monokaryotic ( One nucleus only) while paramecium has two nuclei and is dikaryotic.
What method of locomotion do paramecium use?
Paramecium uses cilia, which are like tiny hairs all around the organism, to pull itself through water. Sometimes, not all the cilia move in the same direction, so the cell spirals as it pulls itself through the water.
Do paramecium prefer light or dark?
Paramecium move to avoid light by using their small hairs projected all over their bodies to move.
Why zooflagellates and euglena classified differently?
The Euglena's pellicle is stiff whereas the zooflagellates' pellicle is flexible.
