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Some protists can function as mixotrophs
- Some protists can function as mixotrophs, obtaining nutrition by photoautotrophic or heterotrophic routes, depending on whether sunlight or organic nutrients are available.
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Protists. See also. Notes. External links. Mixotroph. A mixotroph is an organism that can use a mix of different sources of energy and carbon, instead of having a single trophic mode on the continuum from complete autotrophy at one end to heterotrophy at the other.
Many coloured (i.e., photosynthetic) protists combine autotrophy with heterotrophy and therefore are mixotrophs. For example, some members of the euglenid and cryptomonad groups are mixotrophs.
Some protists can function as mixotrophs, obtaining nutrition by photoautotrophic or heterotrophic routes, depending on whether sunlight or organic nutrients are available. Motility The majority of protists are motile, but different types of protists have evolved varied modes of movement (Figure \(\PageIndex{2}\)).
- Cell Structure. The cells of protists are among the most elaborate of all cells. Most protists are microscopic and unicellular, but some multicellular forms exist.
- Metabolism. Protists exhibit many forms of nutrition and may be aerobic or anaerobic. Protists that store energy by photosynthesis belong to a group of photoautotrophs and are characterized by the presence of chloroplasts.
- Motility. Most protists are motile, but different types of protists have evolved different modes of movement (Figure \\(\\PageIndex{6}\\)). Some protists have one or more flagella, which they rotate or whip.
- Life Cycles. Protists reproduce by many mechanisms. Most undergo some form of asexual reproduction, such as binary fission, to produce two daughter cells.
Those that combine autotrophy (self-sustaining food production from a carbon source and inorganic nitrogen) and heterotrophy (ingesting other organisms to acquire carbon) are known as mixotrophs. The degree of mixotrophy in a…. Read More. In protozoan: Symbiotic mixotrophy. Mixotrophy is a common phenomenon among free-living protozoans, which ...
Apr 10, 2024 · For instance, many protists are mixotrophs, capable of both heterotrophy (secondary energy derivation through the consumption of other organisms) and autotrophy (primary energy derivation, such as through the capture of sunlight or metabolism of chemicals in the environment). Examples of protozoan mixotrophs include many chrysophytes.
Some protists can function as mixotrophs, obtaining nutrition by photoautotrophic or heterotrophic routes, depending on whether sunlight or organic nutrients are available. Motility The majority of protists are motile, but different types of protists have evolved varied modes of movement (Figure \(\PageIndex{3}\)).
