Izilwanyana: inkcazelo emfutshane kwiklasi

Izilwanyana kakhulu kakhulu uhlobo kwiklasi molluscs. Njengoko umthetho, amalungu eli qela bahlala emanzini aselwandle kwaye ukhetha emvula okanye sezulu. Noko ke, ezinye iintlobo bahlala kwiimeko ziingcathu ngakumbi, kuquka iindawo ezibandayo.

Iklasi izilwanyana: ukwakha umzimba

Iqumrhu eli qela luphawulwa macala amabini kwaye yahlulwe ngokucacileyo iinxalenye ezimbini eziphambili - intloko umntla. squid Leg ngethuba yendaleko ukujika, ube ifanele ibekwe ngeenxa Mpondwana zakhe. Yona esinkini, ngoko iintlobo phambili ngakumbi sinciphile kwaye phantsi kwesikhumba (kungangabikho). Abameli Primitive luphawulwa kwiqokobhe enkulu zangaphandle kunye nobuninzi nesamagumbi ezahlukeneyo.

Eluswini, nolwenzelwa umzimba, iquka umaleko ube mnye epithelium kunye nokuqina ijwabu umaleko. Ngendlela, ezinye zezinto eziphilayo chromatophores iiseli sakhi, apho umzimba uyakwazi ukutshintsha umbala, ukuba phantse ezingabonakaliyo ngokuchasene nentsukaphi kokusingqongileyo.

Kwicala ventral komzimba yokwaleka yi umngxuma apho nemibhobho ngokwesondo kunye ezivulekileyo iinkqubo excretory, kunye ezimpundu.

Izilwanyana basebenzisa indlela umdla kakhulu ukuhamba. zokurhwaqela kwezihlunu Strong tyhala amanzi avela lweHo- yokwaleka kokusingqongileyo, ukudala amandla sisenzo.

Izilwanyana: isakhiwo yangaphakathi

Le nkqubo yokwetyisa. Kuphela onke amalungu odidi liqela ezidla. Ixhoba ezona intlanzi, intlanzi encinane kunye nezinye saselwandle esineqokobhe. isilwanyana lokuqala idlulisela ixhoba usebenzisa Mpondwana yayo. Okubangel 'umdla kukuba kwezinye iintlobo kwamadlala amathe ukuvelisa iyityhefu ukuba nisithimbile isilwanyana amadini. Okulandelayo, liboleke abanye ukutya ngokwayo ukuba imihlathi enamandla horny, uze engena umqala. Le pharyngeal kwisisu imibhobho evulekileyo kwamadlala amathe, leyo kwetyiswe polysaccharides kunye namacandelo protein. Kuba bolus esophageal kuya esiswini, nto leyo eyabangela ngo esibindini kunye nee-enzayim pancreatic. ukutya ukudla zityhalelwa ukuya emathunjini, ophela nge empundwini.

Ngendlela, ezinye izilwanyana kule klasi isixhobo okhethekileyo - babizwa ngokuba "sac inki", nto leyo iqulethe esimnyama. Xa ingozi yimfihlelo liphuma isikhwama uhambele ngayo ezimpundu, nto leyo eyenza kube lula ngokukhawuleza ukufihla silwanyana.

isixokelelwano sokuphefumla ibandakanya iigilizi ibunjwe-kakuhle apho zicwangciswe emacaleni lweHo- kwi ingubo. inkqubo wedwa ali-2 - nezintso 4.

Inkqubo yegazi nayo aphuhliswe kakuhle kwaye iqulathe intliziyo, imithambo yegazi, wabiza-njalo 'iintliziyo kumculo ", enika igcwala pulsation igazi. Okubangel 'umdla kukuba, njengokuba ngombala yokuphefumla afumaneka kwezinye ngabameli kokubeka, leyo iqulathe zezobhedu. Kungenxa yoko le nto igazi ngwane oluhlaza.

Kufuneka kuqatshelwe kanjalo ukuba esi udidi izilwane inkqubo kakhulu kuphuhliswa luvo zonke ezingenamqolo. ukuba iNtloko ganglia wazigqubuthela into efana cranium. Izitho - amehlo, uvakalelo mechanical ngayo ingqiqo ivumba - yenziwe kakuhle kakhulu.

Izilwanyana: abameli ezaziwayo-kakuhle apha eklasini

Wonke ilungu cephalopod uneempawu zawo ezizodwa, apha naphaya emangalisayo ngokuzingela ubomi enzulwini yolwandle.

Umzekelo, cuttlefish phantse echitha lonke ixesha bakhe, bamngcwaba esantini emazantsi echibini. Oku kushiya kuphela amehlo - kuyanceda ukubona ixhoba ngokukhawuleza.

Ngwane - kwenye cephalopod edumileyo, leyo ukhetha ukuhlala emazantsi enamatye. Apha, kungaba ngokupheleleyo engaqondakaliyo uphinde ufihle ecaleni ilitye. Unyawo yesilwanyana yohlulwe Mpondwana sokufunxa eziliqela kwicala ngaphakathi.

Elinye iqela elaziwa-kakuhle - squid, olinani ubone ngoku ukuba amalungu fastest kwaye isebenza kwiklasi.