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What protists appear most closely related to animals?
Choanoflagellates are the group of protists most closely related to animals, including humans. Choanoflagellates are known for their distinctive cell morphology.
What is the habitat of chaonoflagellate?
choanoflagellates are sessile marine and in freshwater habitat.
Names of 6 single celled organisms?
archaea, protozoans, thermophilla, pyriformus, choanoflagellates, protozoa
Did animals evolve from protists?
Annelida, Arthropoda, mollusa, Nematoda, platyhelminthes, Cnidaria porifera
What has the author Shigemitsu Hara written?
Shigemitsu Hara has written: 'Studies on marine Choanoflagellates I, new genera, species and combinations of Acanthoecidae from Shioya Coast (Seto Inlandsea, Japan)' -- subject(s): Marine plankton, Zooflagellates
What are the six phyla of plant like protists?
There are more than 15. I counted 51 but it is probably more by now because my list is a little old (1995). They are divided into groups but there are 16 groups on my list Chromobionts, Chlorobionts, Euglenozoa, Rhodophytes, Cryptomonads, Dinozoa, Chytrids, Choanoflagellates, Polymastigotes, Rhizopod sarcodines, Actinopod sarcodines, Microsporidia, Haplosporidia, Apicomplexans, Myxozoa and Ciliates.means of locomotion.
Protist are what kind of organism?
Protists are eukaryotic organisms that are neither plants, animals, fungi, or bacterias. The 5 Super groups of Protists Include: Excavata, Chromalveolates, Rhizaria, Archaeplastida, and Unikonts. Excavata: Diplomonads, Parabalalids, Eugleozoans (Kinetoplastids and Euglenids) Chromalveolates: 1. Alveolates (Dinoflagellates, Apicomplexans, Ciliates) 2. Stramenophiles ( Golden Algae, Brown Algae, Diatoms, and Oomycetes) Rhizaria: Chlorarachniophytes, Forams, Radiolarians Archaeplastida: Red Algae, Green Algae (Cholorophytes, Charophyceans), Land Plants* Unikonts: Amoebazoans (Slime mold, Gymnamoebas, Entamoebas), and Opisthokonts ( Nucleariids, Fungi*, Choanoflagellates, Animals*) * Although these Eukaryotic groups are also kingdoms, they share similarities to certain groups of Protists. The protist kingdom is a very diverse and vast grouping that is sometimes difficult to characterize.
Why are protistan cells not analogous to a single cell from a multicellular organism?
The protists comprise the unicellular organisms that are part of the eukaryotic domain of life (cell that contains a nucleus). The main part of the eukaryotic diversity is composed of lineages with living beings made of one cell (alveolates, rhizaria, amoebozoa, chlorophytes, choanoflagellates, glaucophytes, stramenopiles, some fungi...). The cell in itself is a living organism able to use the environmental ressources to grow, to reproduce, to divide, to communicate with its environment. A single cell from a multicellular organism is a subset of an organism, oftenly, part of a tissue, which is highly specialized in a function even if the cell is able to realize a lot of activities. What about the totipotent cells? They have a potential of differentiation. Sometimes, they are a mandatory step of the life cycle of some organism (via sporulation). Their main characteristic is their potency, but by themselves, before they are specialized, they are just 'potential' cells. Protists are organisms, able to perpetuate a lineage, while a cell from a multicellullar organism is able to perpetuate nothing or may perpetuate a function within a multicellular organism.
Are bacteria and fungi plants or animals?
Neither. Plant and animal cells have nuclei and that is one of the main characteristics (eukaryote) while bacterial cells don't have a nucleus (prokaryote), are much smaller, and have different proteins on the surface.
What are mushrooms closely related to?
The simple answer is that Fungi are the sister group to animals. However, the proper answer is a bit more complex than that. (It might be best to simply say fungi are closely related to animals.) Animals and Fungi are the major clades forming the superclade Opisthokonta. One of the major synapomorphies uniting this clade is the single, posterior, whiplash flagellum on their motile cells. This feature has been lost in the late diverging branches within the fungal kingdom. It is also missing in some of the early branches that belong neither to the animal or fungal kingdoms. These branches contain protists such as the nucleariids and microsporidia, which are the true sister group to the kingdom Fungi, and choanoflagellates, which are sister to the animal kingdom. These protist groups complicate the question because they can wander and because they are early diverging. Early diverging branches are harder to classify than the so called "crown clades" (i.e. fungi, plants, animals). They form a bush at the the base of these "crown clades." In the most recent taxonomic studies (ie. Katz et al. 2011 doi: 10.1146/annurev-micro-090110-102808 & Katz et al. 2012 doi: 10.1093/sysbio/sys026), fungi and animals do form the superclade Opisthokonta. The problematic protist groups are either left out or in between the two.
What is the oldest land on earth?
Harriet was a Giant Galapagos Land Tortoise and the world's oldest living creature. The giant tortoise was taken from the Galapagos Islands by naturalist Charles Darwin in 1835 as a personal pet during his five-year voyage on the HMS Beagle. On that voyage was a young naval officer, John Clements Wickham. After studying Harriet whilst formulating his theory of evolution, Darwin handed the tortoise on to Wickham when the latter sailed for Brisbane to take up a post as police magistrate. Over the years, the tortoise was carefully tended, and in 1958, was moved to naturalist David Fleay's wildlife park on the Gold Coast. She was moved to Australia Zoo on the Sunshine Coast in 1987 where she enjoyed celebrity status until her death on 23 June 2006.The Marine Clam Quahog has a life span of 220 years. Researchers at Bangor University in the United Kingdom recently counted 405 annual growth rings in the shells of a quahog clam from the Arctic. There may well be older individuals.However, in terms of the first "animal", i.e. vertebrate, to appear on Earth (i.e. the oldest type of animal)this would be fish. Fossils of fish have been found which date further back than fossils of larger organisms, and regardless of whether one ascribes to the Scientific or Creationist view, evidence seems to suggest that fish were the first animals.Other evidence suggests that the first organism on earth may well have been a flagellated eukaryote. Their closest known living relatives are the choanoflagellates, collared flagellates that have a morphology similar to the choanocytes of certain sponges. Molecular studies place animals in a supergroup called the opisthokonts, which also include the choanoflagellates, fungi and a few small parasitic protists.the giant galapogos land tortiuseOldest mammal - Whale Approx 180 years documented ageOldest animal overall- Giant turtle -- documented over 200 years.
