Why would algae be placed in kindom protista, not plantae?
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Protista is mostly reserved for single-celled eukaryotes, whether they photosynthesize or not, whule Plantae is usually reserved for multicellular, photosynthesizing organisms.
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"No protists are producers."\n\nI'm sure of it. Protists are the "junk drawer" of kingdoms.\nThe category of Protists includes many widely ranging microbes, including slime molds, protozoa and primitive algae. They are all eukaryotic <you-carry-ah-tick> creatures, meaning their DNA is enclosed in a nucleus inside the cell (unlike bacteria, which are prokaryotic <pro-carry-ah-tick> and have no nucleus to enclose their DNA. \n\nAlgae, Protozoa, Slime molds: Some produce and some consume.
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Harmful algae are microscopic,single-celled plants that live in the sea. Most species of algae or\n phytoplankton are not harmful and serve as the energy producers at the base of the food web, \nwithout which higher life on this planet would not exist.\n Occasionally, the algae grow very fast or "bloom" and accumulate into dense,\n visible patches near the surface of the water. "Red Tide" is a common name \nfor such a phenomenon where certain phytoplankton species contain reddish pigments\n and "bloom" such that the water appears to be colored red. The term "red tide" is \nthus a misnomer because they are not associated with tides; they are usually not harmful;\n and those species that are harmful may never reach the densities required to discolor the water.\n\nUnfortunately, a small number of species produce potent neurotoxins that can be transfered through the\n food web where they affect and even kill the higher forms of life such as zooplankton, shellfish, fish,\n birds, marine mammals, and even humans that feed either directly or indirectly on them.\n\nScientists now prefer the term, HAB, to refer to bloom phenomenon that contain toxins or that\n cause negative impacts.
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Unicellular organisms are placed in both Monera and Protista.  Also there are Archaeans that are single celled prokaryotes that are not placed in either Monera or Protista and are given their own domain called Domain Archaea.  \n\nFor the old classification system unicellular organisms are broadly placed into Monera if they lack a nucleus.  Unicellular organisms are lumped into protista if they have a nucleus and membrane bound organelles, such as mitochodria, and in some cases chloroplasts.  \n\nFor example a bacterium does not possess a nucleus.  Therefore all bacteria are placed into Monera.  \nProtista contains many different kinds of unicellular organisms such as amoeba and green algae.  All of the protists will have a nucleus and mitochondria at the very least.
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Completly false.  Plenty of organisms have flagellas.
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These marne and freshwater golden algae has role as producers in the ecosystem.In low light conditions, may lose their chlorophyll and turn heterotrophic feeding on bacteria and/or diatoms so form the food chain and trophic structure of aquatic ecosystem.The diatoms and golden-brown algae are of great importance as components of the plankton and nanoplankton that form the foundation of the marine food chain.Silica is presents in the cell wall od Diatoms , so they are great soil former.
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Yes, blue green algae (also known as cyanobacterium) is a type of bacteria.  It was once thought to be part of plant kingdom however further studies indicated that it possesses more characteristics of a bacteria than an algae, thus the reclassification to kingdom Monera (microscopic monocellular prokaryotic organisms that mostly reproduce by asexual fission, sporulation, or budding)
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Lichens do not belong to a single taxonomical category because they're the result of a symbiosis (syn=together + bios= life) of algal (phycobiont) and fungal (mycobiont) individuals that live together and exchange mutual benefits. The algae involved may be prokaryotic (cyanobacteria -division Cyanophyta, see first link for classification) or photosynthetic eukaryotic algae(division Chlorophyta). The fungi belong to the Ascomycota.
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< The golden algae or chrysophytes are a large group of heterokont algae, found mostly in freshwater. Originally they were taken to include all such forms except the diatoms and multicellular brown algae, but since then they have been divided into several different groups based on pigmentation and cell structure. They are now usually restricted to a core group of closely related forms, distinguished primarily by the structure of the flagella in motile cells, also treated as an order Chromulinales. It is possible membership will be revised further as more species are studied in detail. They come in a variety of morphological types, originally treated as separate orders or families.
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It could be that lol or it may be due to the bacteria that lives within the body of water, such as blue algae. :)
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1. Kingdom Monera [10,000 species]: Unicellular and colonial--including the true bacteria (eubacteria) and cyanobacteria (blue-green algae).\n\n2. Kingdom Protista (Protoctista) [250,000 species]: Unicellular protozoans and unicellular & multicellular (macroscopic) algae with 9 + 2 cilia and flagella (called undulipodia).\n\n3. Kingdom Fungi [100,000 species]: Haploid and dikaryotic (binucleate) cells, multicellular, generally heterotrophic, without cilia and eukaryotic (9 + 2) flagella (undulipodia).\n\n4. Kingdom Plantae [250,000 species]: Haplo-diploid life cycles, mostly autotrophic, retaining embryo within female sex organ on parent plant.\n\n5. Kingdom Animalia [1,000,000 species]: Multicellular animals, without cell walls and without photosynthetic pigments, forming diploid blastula.\n\n\nSo far those are the five Kingdoms I know of if there are a few more I have no idea but it is possible. Or you are confusing with bilogical organizations, which are 7
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1.\n\n\n\n\n\n\n2. Viruses are neither unicellular nor multicellular organisms; they are somewhere between being living and non-living. Viruses have genes and show inheritance, but are reliant on host cells to produce new generations of viruses. Many viruses have similarities to complex molecules. Because viruses are dependent on host cells for their replication they are generally not classified as "living". Whether they are "alive", they are obligate parasites, and have no form which can reproduce independently of their host. Like most parasites, they have a specific host range, sometimes specific to one species (or even limited cell types of one species) and sometimes more general.\n\n3. protozoa and algae. I don't know why\n\n4. The protozoa are mostly single-celled, motile, and feed by phagocytosis, though there are numerous exceptions. They are usually only 0.01-0.5 mm in size, generally too small to be seen without a microscope. They are ubiquitous throughout aqueous environments and the soil, commonly surviving dry periods as cysts or spores, and include several important parasites. Based on locomotion, protozoa are grouped into:\n\nFlagellates with long flagella  -like Euglena\nAmoeboids with transient pseudopodia   -like Amoeba\nCiliates with multiple, short cilia    -Paramecium\nSporozoa non-motile parasites; form spores like Plasmodium.\n\n\n\n5. The algae gather light energy through photosynthesis. They include many single-celled creatures that are also considered protozoa, such as Euglena and Paramecium bursaria, which have acquired chloroplasts through secondary endosymbiosis. Others are non-motile, and some are truly multicellular, including some members of the following groups:\nChlorophytes green algae, related to higher plants  -like Ulva\nRhodophytes red algae  -like Porphyra\nHeterokontophytes brown algae, diatoms, etc.  -like Macrocystis\n\nThe green and red algae, along with a small group called the glaucophytes, appear to be close relatives of other plants, and so some authors treat them as Plantae despite their simple organization. Most other types of algae, however, developed separately. They include the haptophytes, cryptomonads, dinoflagellates, euglenids, and chlorarachniophytes, all of which have also been considered protozoans.\n\n\n6.\n\n\n\n\n\n\n7.\n\n\n\n\n\n\n8. hyphae is any of the threadlike filaments forming the mycelium of a fungus. Hyphae is a long, branching filament that, with other hyphae, forms the feeding thallus of a fungus called the mycelium. Hyphae are also found enveloping the gonidia in lichens, making up a large part of their structure. A typical hypha consists of a tubular wall, usually made of chitin, which surrounds, supports, and protects the cells that compose a hypha. For most fungi, a cell within a hyphal filament is separated from other cells by internal cross-walls called septa (singular septum).\n\nSome forms of parasitic fungi have a portion of their hyphae modified to form haustoria that are able to penetrate the tissues of a host organism. Similar, yet mutualistic forms of penetrating hyphae are called mycorrhizae and are important in assisting nutrient and water absorption by plants.\n\n\n\n9. \n\n\n\n\n\n\n\n\n10. Lichen is a fungus, usually of the class Ascomycetes, that grows symbiotically with algae, resulting in a composite organism that characteristically forms a crustlike or branching growth on rocks or tree trunks.
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Just to add to Acraz's answer, Plants and fungi are also made up of eukaryotic cells. \nOnly bacteria are prokaryotic.
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It's a type of green algae.  So, it's part of the kingdom Plantae and the phylum Chlorophyta.
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Theory? I mean, I can think of the endosymbiotic theory, but that's eukaryotes. Perhaps you mean the organelle that carries out photosynthesis in prokaryotes?
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Originally classified as plants, fungi are not at all plants, because they are heterotrophs (they do not fix their own carbon through photosynthesis but use the carbon fixed by other organisms). Indeed, fungi are now thought to be more closely related to animals than to plants, and are placed together with animals in the monophyletic group of opisthokonts. However, unlike animals, fungi absorb their food rather than ingest it, and their cells have cell walls surrounding them. For these reasons, these organisms are placed in their own kingdom, Fungi.\n\nThe Fungi are a monophyletic group, meaning all varieties of fungi come from a common ancestor. Mycologists (scientists who study fungi) believe they are monophyletic because they have chitin in their cell walls and are absorbtive heterotrophs, along with other shared characteristics.
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Many of the microorganisms in the pond water are actually plants.\n\nThe microscopic organisms living in the water column are usually refered to as plankton.  The phytoplankton are the microscopic plants, while the zooplankton are the microscopic animals.  The phytoplankton are the majority of the mass, mostly single celled algae and diatoms.