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simple Facts listed for every phylum handily graltoalsimce.org organisms" taxonomy, structure, and also function, in a concise layout for ease of reference.
Kingdom Protista: Single-Celled Organisms Taxonomic level: kingdom Protista; class of construction: in effect, single autonomous cells; symmetry: variable; form of gut: none; form of body cavity other than gut: none; segmentation: none; circulatory system: none; nervous system: none; excretion: diffusion from cell surface.
other features: autonomous solitary cells, reproducing through fission.
variety of species: over 30,000
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Phylum Porifera: Sponges, simplest of Animals Taxonomic level: phylum Porifera; class of construction: cellular, through no unique tissues or organs; symmetry: variable; kind of gut: none; kind of body cavity other than gut: none; segmentation: none; circulatory system: none; concerned system: none; excretion: diffusion from cell surface.various other features: flagellated cells dubbed choanocytes journey water v pores and also cavities.
number of species: 5,000
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Phylum Cnidaria: Hydrozoans, Jellyfish, Anemones, and also Corals Taxonomic level: phylum Cnidaria; class of construction: 2 tissue layers; symmetry: radial; form of gut: blind gut; kind of human body cavity various other than gut: none; segmentation: none; circulatory system: none; worried system: network of nerve cells; excretion: diffusion from cell surface.other features: two simple stages—sessile polyp and also swimming medusa, both tentaculate; consists of anemones, corals, sea whips.
number of species: 9,000
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Phylum Platyhelminthes: Flatworms Taxonomic level: phylum Platyhelminthes; class of construction: organs obtained from three tissue layers; symmetry: bilateral; kind of gut: blind; form of body cavity other than gut: none; segmentation: absent; circulatory system: none; concerned system: small bundles of nerves (ganglia), 2 ventral nerve cords; excretion: excretory offal in many species.other features: flattened free-living worms, often with tubular pharynx to gather food; also, many parasitic species; representatives include the typical freshwater planaria and also the tapeworms.
number of species: 12,000
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Phylum Nemertea: Ribbon Worms Taxonomic level: phylum Nemertea; class of construction: organs acquired from three tissue layers; symmetry: bilateral; type of gut: complete, with anus; form of human body cavity various other than gut: rhynchocoel bordering proboscis; segmentation: absent; circulatory system: present; nervous system: small bundles the nerves (ganglia), two nerve cords; excretion: excretory guts in countless species.other features: elongate free-living worms, with finish gut; carnivorous, using barbed proboscis to death prey.
number of species: better than 800
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Phylum Nematoda: The Roundworms Taxonomic level: phylum Nematoda; class of construction: organs derived from 3 tissue layers; symmetry: bilateral; type of gut: complete; kind of human body cavity other than gut: pseudocoel; segmentation: absent; circulatory system: present; concerned system: little bundles that nerves (ganglia), 2 nerve cords; excretion: one-of-a-kind excretory cells.various other features: tiny free-living and parasitic worms with only longitudinal muscles, circular in overcome section; extended by cuticle; both free-living and also parasitic.
number of species: 12,000
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Phylum Annelida: Segmented Worms Taxonomic level: phylum Annelida; class of construction: organs acquired from three tissue layers; symmetry: bilateral; type of gut: finish with anus; form of human body cavity other than gut: coelom; segmentation: present; circulatory system: closeup of the door system; nervous system: brain, through nerve cords and also bundles (ganglia); excretion: excretory guts in most segments.various other features: segmented worms, with an excellent diversity of head and locomotory appendages; consists of earthworm, sandworm, and lugworm.
number of species: 12,000
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Phylum Sipuncula: Peanut Worms Taxonomic level: phylum Sipuncula; class of construction: organs acquired from three tissue layers; symmetry: bilateral; form of gut: finish with anus; kind of human body cavity other than gut: coelom; segmentation: absent; circulatory system: huge coelomic cavity bathes many tissues; nervous system: mind with solitary ventral nerve cord, through branches; excretion: combine organs.various other features: worm shaped, living in sediment and among rocks, feeding top top sediment v protrusible organ called an introvert.
number of species: about 300
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Phylum Ponogonophora: Gutless Wonders Taxonomic level: phylum (might effectively belong in ~ the Annelida) Pogonophora; grade of construction: organs obtained from 3 tissue layers; symmetry: bilateral; form of gut: none; form of body cavity other than gut: coelom in several sections; segmentation: present in one region; circulatory system: dorsal and also ventral blood vessels, with part of the dorsal ship muscularized into a heart; worried system: brain with rudimentary nerve cords; excretion: paired organs.other features: solitary worm-shaped individuals with no gut; count upon symbiotic bacteria because that nutrition.
number of species; around 100
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Phylum Mollusca: Shelled Invertebrates (Mostly) Taxonomic level: phylum Mollusca; great of construction: organs obtained from 3 tissue layers; symmetry: bilateral; kind of gut: complete, v anus; kind of body cavity various other than gut: coelom; segmentation: absent; circulatory system: usually open up to huge coelomic cavity; worried system: brain, with nerve cords and also bundles (ganglia), mind very well emerged in squids and also relatives; excretion: excretory organs.other features: frequently externally shelled, mantle secretes shell; respires v ctenidium; has clams, snails, squids, octopus.
number of species: much more than 100,000
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Phylum Arthropoda: Jointed Appendages Taxonomic level: phylum Arthropoda; class of construction: organs derived from 3 tissue layers; symmetry: bilateral; type of gut: finish with anus; kind of body cavity various other than gut: coelom; segmentation: present; circulatory system: usually open up to big coelomic cavity; nervous system: brain, v nerve cords and bundles (ganglia), compound eyes; excretion: excretory organs.various other features: outside cuticle, jointed appendages; includes horseshoe crabs, shrimp, crabs, sow bugs, insects.
variety of species: over one million
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Phylum Bryozoa: Moss Animals Taxonomic level: phylum Bryozoa; great of construction: organs obtained from three tissue layers; symmetry: bilateral; form of gut: complete; kind of human body cavity other than gut: coelom, typically reduced; segmentation: absent; circulatory system: absent; concerned system: single ganglion with nerves branching throughout zooid; excretion: no distinct structures.various other features: early american invertebrates, with small individuals (zooids) feeding through lophophore, farming in sheets or erect colonies; a colonial nervous system allows coordination that zooids.
number of species: around 4,000
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Phylum Brachiopoda: Lingulas and Lampshells Taxonomic level: phylum Brachiopoda; grade of construction: organs derived from three tissue layers; symmetry: bilateral; kind of gut: complete; type of human body cavity other than gut: coelom, in two sections; segmentation: absent; circulatory system: heart v blood vessels; worried system: rudimentary, but pets respond to light; excretion: no unique structures.other features: solitary people with 2 valves, attached to bottom through pedicle, feed v ciliated lophophore.
variety of species: around 300
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Phylum Phoronida: Wormlike pets with a Lophophore Taxonomic level: phylum Phoronida; great of construction: organs obtained from three tissue layers; symmetry: bilateral; type of gut: complete; kind of body cavity various other than gut: coelom in number of sections; segmentation: absent; circulatory system: blood vessels moving fluid with peristaltic action; worried system: rudimentary, but giant neurons prolong for the size of the pet to permit instant shortening; excretion: possible presence of offal of excretion.other features: solitary individuals, wormlike, life in vertical tubes through lophophore protruding into water above.
number of species: around 10
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Phylum Echinodermata: animals with Fivefold Symmetry Taxonomic level: phylum Echinodermata; class of construction: organs acquired from 3 tissue layers; symmetry: radial, sometimes combined with bilateral; form of gut: remote sac with very reduced anus, or finish with anus; type of human body cavity other than gut: coelom; segmentation: none; circulatory system: usually open to big coelomic cavity; concerned system: significant nerves expanding from nerve ring, no brain; excretion: diffusion.other features: A spiny skin enclosed an inner skeleton that interlocking calcium carbonate plates; feeding and also locomotion on tube feet connected to water vascular system; includes starfish or sea stars, sea cucumbers, sea urchins.
number of species: around 6,000
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Phylum Chordata: The Sea Squirts Taxonomic level: Subphylum Urochordata; great of construction: organs derived from three tissue layers; symmetry: bilateral; kind of gut: complete, v anus; type of human body cavity various other than gut: coelom; segmentation: none; circulatory system: heart with vessels; nervous system: brain with nerve cords; excretion: diffusion.See more: What State Is Surrounded By The Most Water ? State Surrounded By The Most Water
other features: benthic sea squirts have a barrel-shaped body, through incoming and also outgoing siphons; tadpole larvae have attributes allying this graltoalsimce.org v vertebrates.