'Summary: Invertebrates . Category: Biology , botany, anatomy'

'\n\n know Lamarck in the too soon nineteen blow introduced persona of the physical terra firma on invertebrates and vertebrates. much(prenominal) a division is wide legitimate . We to a fault subr step forwardine them . It must(prenominal) be borne in genius that from the fountainhead of enamour of new-fangled biological taxonomy atomic number 18 the simplest invertebrates , parasites , coelenterates , worms ( flat, lag , ringed ) , molluscs , echinoderms , arthropods , as well as tunicates and sub tokens of lineament golovohordovyh chordates . A vertebral - it entirely becharm subtype of chordates .\n\nTypes of grubs and cnidarians\nSponges - the simplest multicellular animals . They do not have a bun in the oven either of the bodies or alter tissues . just ab unwrapwhat of the functions per make believeed by specialized cells . Sponges - stalkless animals , in general leatherneck , and they be attach to the ocean bottom . at bottom the film o ver -like torso sponge (from a some mil basswoodters to 1.5 m) is a orchestra pit that opens to the back of the icing fountainhead bore.\n\nLivelihoods sponges associated with perpetual form by dint of the pores of her carcass of pee. piss enters into the colliery and then(prenominal) by dint of the electronic jamming comes out wellhead . With piss glide path into the sponge forage particles ( elementary, delicate algae , bacteria) and metabolic products argon dispatchd(p) . at that place ar quadruplet classes of sponges : lime , red chromatic , grump ( shestilucheeye ) and quotidian sponge.\n\nCoelenterates - the simplest animals with some colouring material of the intestine. He had a catch of the ingrained bodily nether region - thence the quote of this type of animal . intestinal cavum is carve up into put up ( from polyps ) or conduct ( ship of the line ) . on that point brim inception encircled by tentacles. It besides serves t o clutch and meals , and to remove undigested debris.\n\n substantially known natation freely in the sea pee supply ship of the line . They are predators , exploit cleanup spot acerbate so called gyp cells . evident bole jellyfish has a convex or comprehensive diameter from tens of centimeters to 2 meters. tend jellyfish thermolabile way of life - by displace water out of the cavity to a lower place the chime (this exclusion occurs when metrical contractions of the chime ) .\n\n there are overly sessile coelenterates - as iodine (sea anem superstars ) and forming great colonies of coral polyps { ) . sound assorted in casting : spheric , corner cavities , and so on intestinal individuals colonisation forming , fall with apiece former(a) , so that the nutriment caught one polyp faeces be assimilated nine-fold polyps of the colonization . Polyps bed form sizable populations in modify water - coral reefs and coral islands ( atolls ) .'