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3D Models of Animals ready made royalty free for 3D modeling.
In the scientific classification of living beings, the kingdom Animalia (in Latin, “animals”) or Metazoo (“metazoans”) is a large group of organisms that are eukaryotic, heterotrophic, multicellular and tissue (except poriferous ). They are characterized by their wide capacity for movement , for not having chloroplast (although there are exceptions, as in the case of Elysia chlorotica ) or cell wall , and for its embryonic development ; that is going through a phase of blastula and determines a fixed body plan (although many species can undergo a later metamorphosis ). The animals form a natural group closely related to fungi. Animalia is one of the four kingdoms of the Eukaryota domain, and to him belongs to the human being.
The best-known animal phyla appear in the fossil record during the so-called Cambrian explosion, which occurred in the seas around 542 to 530 million years ago. The animals are divided into several subgroups, some of which are vertebrates : ( birds , mammals , amphibians , reptiles , fish ) and invertebrates : arthropods ( insects , arachnids , myriapods , crustaceans ), annelids ( earthworms ,leeches ), mollusks ( bivalves , gastropods , cephalopods ), porphyry ( sponges ), cnidarians ( jellyfish , polyps , corals ), echinoderms ( starfish ), nematodes ( cylindrical worms ), flatworms ( flatworms ), etc.
n this field of transition can be mentioned, on the one hand, Proterospongia , coanoflagelado marine and planktonic that forms a gelatinous mass with choanocytes on the outside and amoeboid cells in the interior, and on the other to the small marine organism Trichoplax adhaerens ( placozoos edge) ) that forms a closed plate by squamous epithelium in the dorsal and cylindrical part in the central part, and presents in the inner cavity star-shaped cells; it is reproduced by flagellated buds and eggs. Another simple form of metazoan is Xenoturbella, who lives on the muddy bottoms of the sea. They have a few centimeters long and leaf shape, a ventral mouth that leads to a stomach-shaped sac. Between the epidermis and the intestine there is a layer of connective tissue with a longitudinal muscular tube and muscle cells in the mesenchyme ; in the basal part of the epidermis there is a nervous plexus and in the anterior part it presents a statocyst ; It produces ova and sperm , these identical to those of different primitive metazoans. Its systematic position is uncertain, having been proposed as a member of an independent phylum ( xenoturbélidos), perhaps to place at the base of the deuterostomes . As for the mesozoos , they are no longer considered a transition state between protists and metazoans ; their parasitic way of life seems to have led them to an extreme reduction and simplification from plumed worms .
"Kuchunguza matokeo ya utafiti huu, ""Mifano ya 3D ya Wanyama tayari kufanywa bila malipo kwa ajili ya 3D modeling.""" Katika uainishaji wa kisayansi wa viumbe hai, ufalme wa wanyama (katika Kilatini, <unk> wanyama <unk>) au metazoa (<unk> metazoans <unk>) ni kundi kubwa la viumbe ambao ni eukaryotic, heterotrophic, multicellular na tishu (isipokuwa poriferous). Kwa sababu ya uwezo wao mkubwa wa kusonga, kwa kutokuwa na chloroplast (ingawa kuna ubaguzi, kama ilivyo katika Elysium chlorophyta) au ukuta wa seli, na kwa maendeleo yake ya kiinitete, ambayo hupitia awamu ya blastula na kuamua mpango wa mwili uliowekwa (ingawa spishi nyingi zinaweza kupitia metamorphosis ya baadaye). Wanyama hao hufanyiza kikundi cha asili kinachohusiana sana na kuvu. Animalia ni moja ya falme nne za Eukaryota, na ni sehemu ya jamii ya binadamu. "Kama ilivyoelezwa hapo juu, ""mlipuko wa Cambrian"" uliotokea katika bahari za dunia miaka milioni 542 hadi 530 iliyopita." Wanyama wanaotambuliwa kwa majina kama: Wanyama wenye uti wa mgongo (mammals, amphibians, reptiles, fishes, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles, reptiles Katika eneo hili la mpito, inaweza kutajwa, kwa upande mmoja, Proterospongia, coanoflagellates, na planktonic, ambayo huunda wingi wa gelatin na choanocytes nje na amyeboi ndani, na kwa upande mwingine, kwa viumbe vidogo vya baharini (Trichoplax adherens, placozoa edge) ambayo huunda sahani iliyofungwa na epithelium squamous katika sehemu ya nyuma na cylindrical katika sehemu ya kati, na inaonyesha katika cavity ya ndani ya seli za nyota. Aina nyingine rahisi ya metazoan ni Xenoturbella, ambaye huishi kwenye sakafu ya bahari yenye matope. Wao ni urefu wa sentimeta chache na umbo la jani, kinywa ventral kwamba inaongoza kwa tumbo-umbo mfuko. Kati ya epidermis na matumbo kuna tabaka la tishu ya kuunganisha na bomba la misuli ya mstari wa mstari katika mesenchymum; katika sehemu ya msingi ya epidermis kuna plexus ya neva na katika sehemu ya mbele ina statocyst; inazalisha yai na spermatozoa, hizi ni sawa na zile za metazoa tofauti za primitive. Msimamo wake wa utaratibu ni usio hakika, baada ya kupendekezwa kama mwanachama wa phylum huru ( xenoturbélidos), labda kuweka katika msingi wa deuterostomes. Kwa upande wa mesozoans, hawachukuiwa kama hali ya mpito kati ya protists na metazoans; njia yao ya maisha ya vimelea inaonekana kuwa imewaongoza kwa kupunguzwa sana na kurahisisha kutoka kwa minyoo ya manyoya.