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an easy Facts listed for each phylum handily team organisms" taxonomy, structure, and function, in a concise style for lull of reference.

Kingdom Protista: Single-Celled Organisms   Taxonomic level: kingdom Protista; great of construction: in effect, solitary autonomous cells; symmetry: variable; kind of gut: none; kind of human body cavity other than gut: none; segmentation: none; circulatory system: none; worried system: none; excretion: diffusion from cell surface.

other features: autonomous solitary cells, reproducing through fission.

number of species: over 30,000

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Phylum Porifera: Sponges, easiest of Animals
Taxonomic level: phylum Porifera; class of construction: cellular, through no unique tissues or organs; symmetry: variable; form of gut: none; kind of body cavity various other than gut: none; segmentation: none; circulatory system: none; worried system: none; excretion: diffusion from cell surface.

various other features: flagellated cells referred to as choanocytes drive water v pores and also cavities.

number of species: 5,000

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Phylum Cnidaria: Hydrozoans, Jellyfish, Anemones, and Corals
Taxonomic level: phylum Cnidaria; grade of construction: 2 tissue layers; symmetry: radial; kind of gut: remote gut; type of body cavity various other than gut: none; segmentation: none; circulatory system: none; worried system: network the nerve cells; excretion: diffusion from cabinet surface.

other features: two simple stages—sessile polyp and swimming medusa, both tentaculate; has anemones, corals, sea whips.

variety of species: 9,000

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Phylum Platyhelminthes: Flatworms
Taxonomic level: phylum Platyhelminthes; great of construction: organs obtained from three tissue layers; symmetry: bilateral; form of gut: blind; kind of body cavity various 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.

various other features: planarization free-living worms, often with tubular pharynx to gather food; also, countless parasitic species; representatives include the usual 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; type of body cavity various other than gut: rhynchocoel neighboring proboscis; segmentation: absent; circulatory system: present; nervous system: small bundles that nerves (ganglia), 2 nerve cords; excretion: excretory offal in countless species.

various other features: elongate free-living worms, with finish gut; carnivorous, utilizing barbed proboscis to kill prey.

variety of species: better than 800

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Phylum Nematoda: The Roundworms
Taxonomic level: phylum Nematoda; grade of construction: organs derived from three tissue layers; symmetry: bilateral; type of gut: complete; type of body cavity other than gut: pseudocoel; segmentation: absent; circulatory system: present; concerned system: tiny bundles the nerves (ganglia), 2 nerve cords; excretion: special excretory cells.

other features: tiny free-living and parasitic worms with only longitudinal muscles, circular in cross section; spanned 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; kind of gut: finish with anus; kind of human body cavity various other than gut: coelom; segmentation: present; circulatory system: closed system; nervous system: brain, with nerve cords and also bundles (ganglia); excretion: excretory guts in most segments.

various other features: segmented worms, with great diversity of head and locomotory appendages; consists of earthworm, sandworm, and also lugworm.

variety of species: 12,000

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Phylum Sipuncula: Peanut Worms
Taxonomic level: phylum Sipuncula; grade of construction: organs obtained from 3 tissue layers; symmetry: bilateral; type of gut: finish with anus; type of human body cavity various other than gut: coelom; segmentation: absent; circulatory system: huge coelomic cavity bathes most tissues; nervous system: mind with solitary ventral nerve cord, v branches; excretion: paired organs.

other features: worm shaped, life in sediment and amongst rocks, feeding top top sediment with protrusible organ referred to as an introvert.

variety of species: around 300

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Phylum Ponogonophora: Gutless Wonders
Taxonomic level: phylum (might appropriately belong in ~ the Annelida) Pogonophora; class of construction: organs obtained from three tissue layers; symmetry: bilateral; form of gut: none; type of human body cavity other than gut: coelom in several sections; segmentation: existing in one region; circulatory system: dorsal and also ventral blood vessels, with part of the dorsal ship muscularized into a heart; concerned system: brain with rudimentary nerve cords; excretion: paired organs.

other features: solitary worm-shaped people with no gut; rely upon symbiotic bacteria for nutrition.

number of species; around 100

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Phylum Mollusca: Shelled Invertebrates (Mostly)
Taxonomic level: phylum Mollusca; grade of construction: organs obtained from 3 tissue layers; symmetry: bilateral; form of gut: complete, v anus; kind of body cavity other than gut: coelom; segmentation: absent; circulatory system: usually open to large coelomic cavity; concerned system: brain, with nerve cords and also bundles (ganglia), brain very well developed in squids and also relatives; excretion: excretory organs.

various other features: typically externally shelled, mantle secretes shell; respires through ctenidium; contains clams, snails, squids, octopus.

number of species: more than 100,000

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Phylum Arthropoda: Jointed Appendages
Taxonomic level: phylum Arthropoda; class of construction: organs derived from three tissue layers; symmetry: bilateral; type of gut: complete with anus; type of body cavity other than gut: coelom; segmentation: present; circulatory system: usually open to big coelomic cavity; nervous system: brain, with nerve cords and bundles (ganglia), compound eyes; excretion: excretory organs.

various other features: outside cuticle, jointed appendages; contains horseshoe crabs, shrimp, crabs, sow bugs, insects.

number of species: over one million

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Phylum Bryozoa: Moss Animals
Taxonomic level: phylum Bryozoa; grade of construction: organs obtained from three tissue layers; symmetry: bilateral; form of gut: complete; kind of human body cavity various other than gut: coelom, generally reduced; segmentation: absent; circulatory system: absent; concerned system: single ganglion through nerves branching throughout zooid; excretion: no unique structures.

various other features: colonial invertebrates, with little individuals (zooids) feeding through lophophore, farming in sheets or erect colonies; a early american nervous system permits coordination the zooids.

number of species: about 4,000

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Phylum Brachiopoda: Lingulas and Lampshells
Taxonomic level: phylum Brachiopoda; class of construction: organs obtained 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 with blood vessels; worried system: rudimentary, but animals respond come light; excretion: no one-of-a-kind structures.

various other features: solitary people with two valves, attached come bottom through pedicle, feed with ciliated lophophore.

number of species: around 300

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Phylum Phoronida: Wormlike pets with a Lophophore
Taxonomic level: phylum Phoronida; class of construction: organs derived from 3 tissue layers; symmetry: bilateral; kind of gut: complete; type of human body cavity various other than gut: coelom in several sections; segmentation: absent; circulatory system: blood vessels moving liquid with peristaltic action; nervous system: rudimentary, but giant neurons extend for the size of the pet to allow instant shortening; excretion: possible presence of guts of excretion.

various other features: solitary individuals, wormlike, living in upright tubes through lophophore protruding into water above.

variety of species: roughly 10

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Phylum Echinodermata: pets with Fivefold Symmetry
Taxonomic level: phylum Echinodermata; class of construction: organs derived from three tissue layers; symmetry: radial, sometimes merged with bilateral; kind of gut: remote sac with an extremely reduced anus, or finish with anus; form of human body cavity various other than gut: coelom; segmentation: none; circulatory system: usually open to big coelomic cavity; worried system: major nerves expanding from nerve ring, no brain; excretion: diffusion.

other features: A spiny skin enclosed an interior skeleton that interlocking calcium carbonate plates; feeding and locomotion on pipe feet connected to water vascular system; contains starfish or sea stars, sea cucumbers, sea urchins.

variety of species: approximately 6,000

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Phylum Chordata: The Sea Squirts
Taxonomic level: Subphylum Urochordata; grade of construction: organs acquired from 3 tissue layers; symmetry: bilateral; type of gut: complete, through anus; type of body cavity other than gut: coelom; segmentation: none; circulatory system: heart with vessels; worried system: brain with nerve cords; excretion: diffusion.

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other features: benthic sea squirts have actually a barrel-shaped body, v incoming and outgoing siphons; tadpole larvae have functions allying this team with vertebrates.