Apho coelenterates nokugaya ukutya: ingakumbi zomzimba

Amanzi hydra, jellyfish nekorale - Zinjalo coelenterates izilwanyana multicellular. Hlobo luni lwendlela yokuphila ntoni ukuphila? I feed? Apho coelenterates nokugaya ukutya? Iimpendulo zale mibuzo neminye emininzi inokufumaneka kwinqaku lethu.

iimpawu ngokubanzi coelenterates

Nangona ukuba multicellular, coelenterates akukho iithishu. Ngoko ke, akukho bona kunye namaziko. Coelenterates lolona ubukho iiseli ezizodwa ukuba zibe umzimba umaleko ezimbini. Le ngaphandle kuthiwa ectoderm. Le nto ndiyibhalayo iiseli eziphakathi, sihlabe, ulusu, izihlunu, isini kunye luvo.

Endoderm - elingaphakathi umzimba umaleko coelenterates. Le yinxalenye yomzimba apho coelenterates ukwetyisa ukutya. Cinga iimpawu komzimba kule nkqubo ngokuthi ngumzekelo amanzi hydra.

ukugaywa cavitary

Hydra ayikwazi ukwenza intshukumo esebenzayo. Umsebenzi uhlobo ngumtya besenza ematheni, kwelinye icala apho ngumlomo. It ingqongwe nemisipha. Apho coelenterates nokugaya ukutya? Le nkqubo iqala em- emzimbeni.

Hydra luchaphazela kwezilwanyana kwindawo neentlanzi usebenzisa iiseli ehlabayo. Further ukukhutshwa okuva ehamba umlomo kuloo ndawo ibinomthwebeba emzimbeni. iiseli Glandular ziyingxenye endodermal, mfihlelo ekwanti, apho kuyasa ukutya zibe ziingceba ngamnye.

ukugaywa yeselula

Ngesakhiwo zilandelayo, apho ukutya zifunxe coelenterates iiseli yokwetyisa. Baye misila, adala yangoku yamanzi. Xa oku kutya amasuntswana kwaziswa yeseli ngaphezulu. Kuya kubakho isigaba esilandelayo cleavage yakhe.

iiseli yokusila abe unyawo lobuxoki. Oku outgrowths kukho icytoplasm edlulayo. Baya kuthatha ukutya, yaye ngaphakathi kwiseli. Apho, ku vacuoles ometyiso lwenzeka inkqubo cleavage yokugqibela. iintsalela Undigested kwakhona ahluka ngomlomo.

Ngoko ke, sizicingele apho coelenterates ukwetyisa ukutya. Le nkqubo iqhutywa ngezigaba ezibini. Zonke coelenterates are ngamarhamncwa. Ne ukuba ungenwe iiseli amaxhoba ehlabayo. Iimpondo akuyo emlonyeni, yishenxisele kungena sayo emathunjini. Kukho iqala lokuqala ukwetyisa, leyo encochoyini iiseli ezikhethekileyo endoderm.