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In biology, “kingdom” refers to one of the five major groups of organisms, used to classify and group living things based on their common characteristics.
One of the five kingdom classifications is Protista, namely eukaryotic unicellular organisms such as unicellular algae and protozoa, which are not included in the other kingdoms. The following is the complete review.
What are Protists?
Protista are simple eukaryotic organisms that do not belong to the groups of plants, animals, or fungi.
Protists are generally unicellular but can also be found in the form of cell colonies. Most Protists live in water, moist terrestrial environments, or even as parasites.
Reporting from BYJU’S, scientists speculate that Protista forms a relationship between plants, animals and fungi because all three kingdoms originate from a common Protista ancestor, dating back billions of years.
Although these “Protista-like” ancestors are hypothetical organisms, we can trace some of the genes found in modern animals and plants to these ancient organisms.
Characteristics of Protista
Living creatures belonging to the kingdom Protista have the following characteristics:
1. Unicellular and Multicellular
Kingdom Protista consists of organisms that are generally unicellular, but can also be multicellular (have many cells). Protista multicellular organisms tend to live in colonies.
2. Eukaryotic Cells
Protists have a nuclear membrane, making them more complex compared to prokaryotic bacteria.
3. Living Free or Parasitic
Protists can live freely or as parasites that cause various diseases.
4. Live in Humid Habitats
Protista habitat generally lives in moist places, such as fresh water or the sea.
5. Role as Phytoplankton
Most of the Protista in the sea act as phytoplankton, the main contributors in providing energy in the food web.
6. Aerobic and Anaerobic
Protists can be aerobic or anaerobic. This depends on the need for oxygen in respiration.
7. Characteristics of Heterotrophs and Photoautotrophs
Protists can be heterotrophs (obtain food by absorbing organic molecules) or photoautotrophs (use chloroplasts to capture solar energy).
8. Distracted
Motiles are living things that move or are capable of moving by themselves.
Many Protists have locomotor organs such as flagella, cilia, or pseudopodia, which allow them to move freely.
Classification and Examples of Protista
Reporting from Geeksforgeeks, the classification of Protista is divided into 3, namely plant-like Protista, animals and fungi.
Plant-Like Protists
These organisms are similar to plants because they have the same similarity, namely carrying out photosynthesis. Some Protista that are plant-like are Dinoflagellates, Chrysopita, and Euglenoids.
Animal-Like Protists
These protists, also known as protozoa, are organisms that carry out heterotrophic metabolism. Examples of the Protista category that resemble animals are Euglena, Zooflagellates, Foraminifera, and Ciliates.
Fungus-Like Protists
Fungi-like protists are not part of the Fungi kingdom because their body structure and reproductive methods are different from the Fungi group, but are similar because they do not have chlorophyll, can produce spores, and are heterotrophs.
Examples of Protists that are similar to fungi are Oomycetes, Slime molds (slime molds), and Labyrinthulomycetes.
So, that’s a review of Protista. What are Protists? That is the kingdom (kingdom) in the classification of living things, which are simple eukaryotic organisms, which are not included in the groups of plants, animals or fungi. I hope this information is helpful.
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2024-04-02 23:00:00
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