I-Gastropod mollusks: isakhiwo, umsebenzi obalulekileyo, ukuvelisa

Iigastropod okanye imiski zibhekwa njengeklasi elikhulu kakhulu lezilwanyana, elinamhlanje malunga neentsuku eziyi-100. Phantse bonke abameli basendulo beqela bezilwanyana zaselwandle, ezathi zikhokelela ekudluleleni kwimihlaba yasemanzini kunye namanzi amanzi. Amacwecwe kunye nama-parasites ayaziwa, kodwa awaninzi. Kuyathakazelisa ukuba ezinye zezilwanyana zithe zahlala kwindlela yokuphila yobomi, ookhokho babo babemvelo.

I-Gastropod mollusks: isakhiwo somzimba

Umzimba wabameli balolu hlobo uhlulwe ibe yinxalenye yentloko, i-trunk, umlenze we-muscular. Eentloko, ezininzi iintlobo zineenxalenye ezimbini okanye ezimbini. Ngokubhekiselele kwi-trunk, i-asymmetrical kunye ngokupheleleyo kwisitya. Igobolondo kwi-gastropods yinto enye kwaye ivelisa ukujikeleza ngeenombolo ezihlukeneyo. Umlenze usebenza ukuhamba nokulungisa - kwicala elingaphantsi kukho inye eyodwa. Xa kukho ingozi, intloko nomlenze ziqiniswe ngaphakathi kwegobolondo.

Isigqoko sengubo yesilwanyana sisekhoyileji ephantsi yegobolondo. Oku kuvula ii-ducts inkqubo ye-excretory, kunye ne-anus. Abanye abameli beklasi nabo banamathole enkqubo yokuzala. Kuyathakazelisa ukuba inxalenye yengubo yabahlali baselwandle yaba yimigodi, ngoxa abemi beemipompo apha.

Izembozo zomzimba zimelelwa yi-epithelium, enezityebi kwiintlanzi ezithile ezivelisa i-mucus.

I-Gastropod mollusks: isakhiwo sangaphakathi

Inkqubo yokugaya iqala ngomlomo womlomo, ukuvulwa kwayo okukuyo ngaphantsi kommandla oyintloko. Emqaleni, kukho uhlobo oluthile olubizwa ngokuthi i-radula, ebizwa ngokuba yi-carpet, esetyenziswa kuyo ukutya kunye nomhlaba. Emva koko kuza isisu (iidumba ezivulekileyo zivule apha) kunye nomathumbu, ophelela ngomngxuma.

Inkqubo ye-excretory kwiintlobo ezininzi zimelelwa yintliziyo enye, nangona kukho izilwanyana kunye nezimbini ezimbini. Inkqubo ye-circulatory yimiqathango ye-lacunar kwaye iqulethe intliziyo, inkqubo ye-lacunae kunye neempahla.

Inkqubo yokuphefumula ibhekiswe ngamagidi okanye imiphunga. Kwababameli baselwandle, njengomthetho, umntu uyakwazi ukubona i-ktenidia, okanye iigill. Ngeentlobo ezifanayo, eziphinda zadlulela ekukholeni kwamanzi, izigulane zenza umsebenzi wengubo. Abameli basemhlabeni babonakaliswa yinkqubo yokuphefumula eyinkimbinkimbi, equlethwe ngumpompo kunye nenkqubo yeethubhu ezixubileyo kwaye zithwala umoya kuwo onke amalungu omzimba.

Eyakhelwe kakuhle kunye nenkqubo yesifo, ekwahlulelwa njengoluhlobo lwe-diffuse-nodal. Uninzi lwezilwanyana zinamaqabane amahlanu e-ganglia enkulu. Kubalulekile ukuphawula iziko zentlupheko ephuculweyo , kubandakanywa amehlo kunye nama-receptors.

I-Gastropod ingaba zidibeneyo (iintlobo zaselwandle) kunye ne-hermaphrodites (abameli bamanzi kunye namanzi aphelileyo). Ukufakelwa kweziqu, njengomthetho, kwenzeka emzimbeni wesifazane, emva koko ubeka amaqanda. Kuyathakazelisa ukuba ngamanye amaxesha i-gastropod mollusks ihlehlise amaqanda amaninzi ngeyodwa, ukwenza i-masonry.

Amaqanda ahlanganiswe ne-capsule eneqhekeza encinci phezulu. Ngamanye amaxesha, ngaphandle kwendawo yokubambisa indawo, ngokuncedisa i-mucus, i-unfertilized, iifomsile ezingenanto zifakwe. Le ndlela inokukhusela - isilwanyana sidla amaqanda amaninzi angenanto, uze ushiye. Ngokuphathelele uphuhliso, lunokuthi lube luthe ngqo okanye ngokubunjwa kwezibungu.

I-Gastropod mollusks: iintlobo ezithandwa kakhulu

Ummeli ogqwesileyo weklasi nguye obizwa ngokuba ngumnquba. Kubalulekile ukuba uqaphele ukuba amaqela amakhulu alezi zilwanyana angonakalisa isivuno seidiya. Ngethuba elifanayo iimfene ezikhulayo kwilizwe elithile zibhekwa njengento ebiza kakhulu.

Kwaye abanye abanini bayayazi i-slug - i-shellfish encinci kunye negobolondo encinciweyo, edla izityalo. Le yintlanzi yangempela yemifuno yemifuno, ngoko ke iikhemikhali zisetyenziselwa ukutshabalalisa abantu.