Polyp hydra - a rare zari

Hydra - shi ne na musamman iyali, memba na aji na hydroids irin coelenterates. Suna zaune ne kawai a ruwa tare, yafi tsaurara da Duckweed. Sun yarda da su shirya a cikin haske yankunan da tafkunan da Marshes, kamar yadda kamar hasken rana. Suka ciyar a kan ruwa fleas, kananan sauro larvae, toya, Cyclops, vodoemnym plankton.

Polyp Hydra ne irin wannan a cikin size zuwa ƙwãya daga sha'ir. Ya translucent, grayish ya dafa. A daya hannun yana da wani rami, wanda abubuwa a matsayin rami da nufin cire sharar kayayyakin kewaye tentacles. A gefe guda shi ne ake kira tafin kafa da wanda shi kulake da tukwãne ruwa surface.

A jikin kunshi biyu cell iri - waje da ciki. Duk da ciki - dai kawai da hanji kogo. Numfasawa ne da za'ayi a ko'ina cikin jiki surface.

By al'amurra da wani barga matsayi, ruwa tare hydra freezes a jira na azabtar. A cikin tentacles ne kankanin cilia cewa taimaka wajen gane gabatowa ganima. A hydra jiki surface zuwa mafi girma har a kan tentacles, akwai Kwayoyin tare da wani gashi doguwar dauke da kwantena guba. A lamba tare da samar da irin wannan cell, kamawa guba ya kashe ta. Hydra tentacles Firaministan ganima ga bakin da tsattsewa shi.

Polyp hydra - a real zari. Shi ne iya ci da adadin abinci sau uku mafi girma daga kansa. Lõma da abinci da ke tsaye a cikin hanji lumen, wanda aka narkewar da sauri.

Idan wani hakar ma'adinai da'awar biyu na hydra, suka fara zuwa tsotse hadaya a garesu. Lokacin da lamba ne manyan, mai ƙarfi hadiye kanana. Amma da paradox, ya yi lõma da hydra ba ya mutu. Bayan wani lokaci shi ta barke daga kuru zaa iya hadiye. Bayan kasance a cikin hanji lumen ma'abũcin zumunta, "otryahnuvshis", ta sami wani dadi wuri, da sandunansu, kuma freezes a jira na abinci.

Hydra ruwa tare iya ninka hanyoyi biyu: budding (asexual) da kuma rarraba (jima'i). A farko Hanyar samar da daya ko fiye growths a jikinsa, wanda, a lokacin da balagagge, ana rabu da "mahaifiyarka." Domin a watan da hydra zai iya haifar da up to 15 jinsunan nasu irin. Wannan sauki hanya ne quite m saboda mafi yawan yara sai ya samu, tsira.

Na biyu embodiment yana amfani da yaduwa a yanayin da karancin abinci. A tamowa yanayi ne da samuwar na jam sel. Kuma a kan wasu samfurori namiji Kwayoyin suna kafa, da kuma a kan sauran - mata. Bayan hadi, kwai da aka kafa, yayin da ya fara tasawa mutum ya mutu, da kuma sakamakonsa kwai sinks zuwa kasa. Bayan kwance don wani lokaci, saboda shi za a iya kafa a cikin bazara na hydra, amma mafi sau da yawa shi ya mutu.

Ruwa tare polyp Hydra mafi rayukansu har yanzu. Idan dole, ya iya motsawa, motsi da kuma lankwasawa da jiki tafin kafa. Gano wani sabon gida, shi sucked.

Polyp hydra yana da babban ikon mai da batattu ko lalace sassan jiki (sake halitta). Lokacin da dissection na mutum daya cikin kashi biyu, kamar zalunci, ya zama biyu hydra. Masana kimiyya sun nuna cewa hydra rubuce m.