Chaza inkqubo ukwetyisa ukutya kunye hydra: Iimpawu zomzimba of coelenterates

"Chaza inkqubo ukwetyisa ukutya kunye hydra" - ukwenza umsebenzi onjalo ngokuqinisekileyo hayi zonke. Emva ke ngezilwanyana yesikolo hayi kakhulu zineenkcukacha ukuba siqwalasele lo mba. Sisonke, makhe ukuhlaziya ulwazi lwethu kwaye sijonge indlela hydra feeds.

iimpawu noshowo i Hydra

Amanzi hydra ngummeli wendlela uhlobo Coelenterata. Lo ngumzekelo isifundo isilwanyana multicellular njani le umanyano nokwenza. Ukuma komzimba Hydra ufana micingeni encinane, nto leyo iqhotyoshelwe kwisiseko. Baye kundikhonza njengoko ezantsi ichibi, amatye okanye enye zeendawana. Ekupheleni sesisa Mpondwana akhiwe umzimba. Nge hydra wabo amandla uzingela izilwanyana zasemanzini ezifana ciliates, kwezilwanyana okanye maxa wambi nkqu Qhotsa yeentlanzi.

Lunye kweeseli

Siza kuqhubeka ukwenza umsebenzi "Chaza inkqubo ukwetyisa ukutya kunye hydra". Ukuze uqonde lo mbuzo, kuqala ufumanise ukuba amalungiselelo njani esi silwanyana. Ngaphandle kwento yokuba hydra yinto ephilayo multicellular, eli laphu langoku engazange. Kodwa umzimba wakhe luqokelelane Asiyiyo iiseli efanayo, ezizodwa, uhlobo ngalunye elenza umsebenzi wayo. Ngoko ke, ngoncedo ulusu kunye izihlunu Hydra kuvunyelwane. Kodwa iiseli zemithambo saa kuwo wonke umzimba, wenziwe ulwalamano kunye nokusingqongileyo. Kukho umzimba hydra kunye gametes - amaqanda kunye amadlozi. Abawenza inkqubo coelenterates ukuzala ngokwesondo.

Yintoni nendlela adle Hydra

izilwanyana ezincinane ezineseli kunye ezinomqolo, leyo ukuhamba kufutshane hydra amatsha, kuba kuyo lixhoba lula kakhulu. Animal emke kubo kunye nemisipha, wamthuma sayo wamathumbu ukuba ukugaywa ngakumbi. Kodwa ngaphambi kokuba eso silwanyana paralyzes ixhoba laso. Iimpawu Hydra ke phambi iiseli ehlabayo. Ngamnye kubo iquka isingxobo apho umsonto ezijijekileyo. iseli Top abuhlungu na iinwele onovakalelo. Xa kufikwa apho ixhoba, obenosinga ujika kwaye ngamandla wahlaba waya emzimbeni. Inoku bubuhlungu imveliso engena umzimba, oko paraliziruyuschy ngokupheleleyo. iseli abuhlungu yenza umsebenzi wayo kanye kuphela, emva koko afe. Kodwa kumzimba hydra kubonakala kwangoko ezintsha. Oku kungenxa nokwahlulwa iiseli zemfundo, nto leyo enokwenza ukuba zonke ezinye iintlobo.

komgodi isisu

Ngoko ke, ngenxa yomsebenzi eququzelelweyo le Mpondwana kunye iiseli ebuhlungu production ngokupheleleyo sayo ethunjini le hydra. Apha ubethwa enzymes iiseli glandular. Avelisa ehlanganisa zebhayoloji, phantsi inyathelo apho inxalenye enkulu isidlo aqhekeke abe iziqwenga. Kuthiwa inkqubo yokucola zonke iintlobo yabaMeli Coelenterates ivaliwe uhlobo. Kuyinto isintu kubume kwaye imelwe kuphela ukuvulwa komlomo kwisisu emathunjini. Amacandelo eseleyo zilahlekile. Oku kuthetha ukuba undigested doti ukutya kususwa ngomlomo. Kakade ke, le nkqubo yokusila ilula kwaye kwakudala. Noko ke, xa siqwalasela umcimbi ekukhanyeni zazivelela, siyakwazi ukubona kunye neempawu okuqhubekayo. Ukuba izilwanyana multicellular lokuqala - imihlathi - inkqubo yokuhluza Power emelwe amasuntswana ezityiwayo ezivela emanzini, hydra ngokuzimeleyo kuzingela, ine- amadlala analogu kwaye uphumeza unyango imichiza yokutya. Ngoko ke ukuba ukwakheka ingqalelo kwingxaki ngeliso lenyama. Apha ngokuyinxenye wasondela impendulo 'Chaza inkqubo ukwetyisa ukutya kunye hydra ".

ukugaywa yeselula

Kodwa kwisisu isisu inkqubo ukwetyisa e hydra, njengazo zonke coelenterates kuphela. Emva sokonakalisa zibe ngamaqhekeza amancinci amasuntswana kokuba sijongana namanye amaqumrhu ezikhethekileyo. Oku iiseli sokugaya abafunyanwa umaleko engaphakathi umzimba amanzi hydra. Baye misila zabo, ezinako ukukulumkisela ukujikelezisa umsinga wamanzi. Naye ukutya ufikelela kumphezulu ezi seli. Okulandelayo, mbambe unyawo lwakhe zobuxoki. Ngoko ke ukudla ngaphakathi iiseli ezikhethekileyo. Le ndawo ke isigaba sokugqibela kwinkqubo ekugayeni. It iphela vacuoles ometyiso usebenzisa enzyme hydrolytic. Kwakhona bakha iintsalela undigested iyasuswa ngomlomo.

Ngoko ke, ngokuba amanzi hydra ukwetyisa ngaxeshanye ngokuqhelekileyo iintlobo ezimbini: cavernous kunye zeselula. Eyokuqala lwenzeka kwi sayo isisu nge iiseli glandular iienzymes ukwenzela ukwetyisa ukutya. Eyesibini linqanam lokugqibela. Kuyinto uphawu iiseli ezizodwa kunye vacuoles esiswini. Ndicinga ukuba ngoku lo msebenzi "Chaza inkqubo ukwetyisa ukutya kunye hydra" akayi kubangela inkathazo mntu.