Polyp hydra - ochepa chabe wosusuka

Hydra - ndi banja wapadera, membala wa gulu la hydroids coelenterates mtundu. Iwo amakhala yekha mu madzi oyera, makamaka omangika ndi duckweed. Iwo amakonda kusamukira ku madera yowala mayiwe ndi m'madambo, monga ngati dzuwa. Iwo kudya utitiri madzi, ang'ono udzudzu mphutsi, mwachangu, cyclops, vodoemnym zomera.

Polyp Hydra ndi ofanana mu kukula kwa mbewu ya barele. Iye translucent, grayish hue. Pa dzanja limodzi kuti ali dzenje, yomwe imateteza M'mimbamo ndi anafuna kuchotsa zinthu zotha atazunguliridwa tentacles. Mosiyana ndi otchedwa yekha ndi umene amakhala pamwamba n'kupuma madzi.

thupi imakhala mitundu selo awiri - kunja ndi mkati. Mkati onse - ziri chabe matumbo patsekeke. Kupuma ikuchitika mu pamwamba thupi.

Ndi kukhala ndi malo okhazikika, madzi oyera hydra amaundana pokonzekera wovulalayo. Pa tentacles ndi cilia ting'onoting'ono kuti kuthandiza kupeza nyama likuyandikira. Pa hydra thupi pamwamba Pamlingo wamkulu pa tentacles, pali maselo ndi tsitsi projecting munali kapisozi poizoni. Pokhudzana ndi kupanga amenewa khungu, kugwira ululu wakupha ake. tentacles Hydra amakankhira nyama kukamwa ndi kumeza izo.

Polyp hydra - wosusuka weniweni. Iye akhoza kudya kuchuluka kwa chakudya katatu kuposa yake. Kumeza chakudya amapita mwachindunji ku lumen wa matumbo, amene m'mimba msanga.

Ngati migodi ndi amati awiri hydra, iwo amayamba kukoka nsembe mbali zonse. Pamene kukhudzana ndi lalikulu, lamphamvu kumeza ang'onoang'ono. Koma chododometsa, kuwameza hydra sadzafa. Patapita nthawi izo Inayamba ku guts kuti kumeza. Atakhala mu lumen wa matumbo Wachibale, "otryahnuvshis", iye wapeza omasuka, timitengo ndi amaundana pokonzekera chakudya.

Hydra madzi oyera akhoza kuchulukitsa njira ziwiri: budding (asexual) ndi kugawa (kugonana). Mu njira woyamba umabala zophuka chimodzi kapena zingapo pa thupi lake, imene okhwima, anasiyanitsidwa ndi "mayi." Kwa mwezi wa hydra Ngokhoza kulenga kwa mitundu 15 ya mtundu wawo. njira imeneyi imayenda ndithu chifukwa ambiri a ana kotero analandira umapulumuka.

Chimake chachiwiri amagwiritsa kafalitsidwe vuto la kusowa kwa chakudya. Mu zikhalidwe kutupikana ndi mapangidwe maselo nyongolosi. Ndipo ena toyesa maselo wamwamuna anapanga, ndipo ena - akazi. Pambuyo umuna, dzira aumbike, pamene munthu wamkulu umafa, ndipo chifukwa limalephera dzira pansi. Pambuyo atagona chifukwa nthawi zina, chifukwa akhoza kupangidwa m'chaka cha hydra, koma nthawi zambiri amafa.

Madzi oyera polyp Hydra kwambiri moyo wawo akali. Ngati ndi kotheka, akhoza kusuntha, akusuntha ndi kupinda yekha thupi. Kupeza nyumba yatsopano, ndi mawere.

Polyp hydra ali ndi luso mkulu kuchira otaika kapena kuonongeka ziwalo (kusinthidwa). Pamene kung'ambika munthu wina pawiri, ngakhale wosiyana, amakhala hydra awiri. Asayansi asonyeza kuti hydra theoretically wosafa.