Inda akwai wani hydra narkewa? Features na narkewa hydra

Hydra - da saukin da oda Coelenterates. A kusan kowace jiki na ruwa sanaki da ruwa tare polyp. Yana da wani Semi-m gelatinous jiki, kama da kansa matsar da ciki inda narkewa auku hydra.

Yana ciyarwa da hydra

A size daga cikin na farko jiki da wuya wuce 2 cm. Hydra zahiri kama mucous tube ko greenish ruwan kasa launi. Its launi dogara a kan abinci. Daya karshen na jiki shi ne a haɗe zuwa shuke-shuke, da duwatsu ko driftwood, a cikin ruwa don kama sauran ganima. M shi ne kananan kwaro - daphnia, Cyclops, oligochaetes-naidids. Wani lokaci da abinci da kuma bauta wa kananan crustaceans da kifi soya.

The baka bude kewaye da tentacles hydra, wanda akwai shida zuwa ashirin guda. Su ne a akai motsi. Da zarar aka azabtar da aka taɓa shi, harbin Kwayoyin, dake a cikin tentacles, nan da nan ya jefa a nuna thread dauke da guba. Tunkuɗa su zuwa cikin dabba kusata, shi paralyzes shi da kuma ja da tentacles kawo bakinsa. Wannan halitta da alama cewa, jikin ta kamar yadda aka saka a kan wanda aka azabtar dai itace ya zama haka a cikin hanji, inda narkewa fara a Hydra. Harbin guba kwantena za a iya amfani da sau daya, bayan da aka maye gurbinsu.

A tsarin da narkewa kamar tsarin

Hydra jiki ne sosai kama da biyu-ply jakar, cikin matsanancin Layer na sel da ake kira da ectoderm da ciki - indodem. Tsakãninsu akwai wani structureless abu kira mesoglea.

A abun da ke ciki na ciki Layer, inda da narkewa faruwa hydra wakiltar kagaggun glandular da kuma narkewa kamar cell. A farko saki a cikin hanji lumen narkewa kamar ruwan 'ya'yan itace, wanda shi ne ƙarƙashin rinjayar feed ci thickens kuma karya saukar zuwa kananan barbashi. Sauran ciki Layer na sel dauka wadannan guda kuma zana su a ciki.

Saboda haka, narkewa kamar tsari zai fara a cikin hanji lumen da ciki ƙare indodem Kwayoyin. All ragaggen abinci da zai iya ba nike, an jẽfa fitar ta bakin.

Ta yaya narkewa abinci a Hydra

Narkewa kamar ciki Layer na sel ne a karshen flagella 1 zuwa 3 a cikin abin da lafiya barbashi an kõma baxini da kuma abinci nike. Rashi na kai tsarin a cikin jiki hydra dagula aiki na samar da gina jiki ga sel da ectoderm, ba cewa mesoglea isasshe m. Wannan matsala ne warware ta data kasance growths a kan duka cell yadudduka. Sun ƙetare intercellular abu, a haɗa via rata mararraba. Organic kwayoyin kamar sunadaran amino acid da sugars, ta hanyar wucewa su, samar da abinci ectoderm.

Glandular Kwayoyin nuna narkewa kamar enzymes wanda fada cikin ciki rami, inda narkewa auku hydra. Sun rushe sunadaran da samar da horo ga abinci zuwa nike. Wannan ake kira cavernous narkewa. Shi ne halayyar da hakan kwayar dabbobi.

Lokacin da abinci da aka narkewar a cikin narkewa kamar vacuole - wannan kwayuka narkewa, halayyar protozoa. A hade da wadannan nau'o'i guda biyu na abinci narkewa, samar da rarraba da na gina jiki a ko'ina cikin jiki, ya tabbatar da dangantakar kwayar kuma unicellular dabbobi.

Lokacin da akwai, inda akwai wata hydra narkewa, suna tõzarta na cell metabolism, shi ne matsa, sakamakon da fitarwa.