I-mollusks ephikisanayo

I-mollusks ephikisanayo (isigaba se-lamellarbranch) ngokuvamile imilenze engasebenzi noma immobile. Bahlala phansi emagodini. Izinhlobo eziziwayo zamallusk namuhla zimelelwa inani elingaphezu kwezinkulungwane eziyishumi nanhlanu. Abaningi babo bahlala olwandle, amancane - amanzi ahlanzekile.

I-mollusks ephikisana nayo inomzimba ohlangene ohlangene. Iqukethe umlenze nesiqu, ikhanda liyancipha (lincishisiwe). Ngokujwayelekile, umlenze uhlotshiswe emgqeni. E-mollusks yeselula, iyakwazi ukuphuma egobolondo, idonsela phansi emhlabathini phansi, igodle sonke isilwane ngemuva kwayo. Ezingxenyeni ezinamathele phansi noma ezilele kuso, umlenze uvame ukunciphisa ube mncane noma ngaphezulu.

Isigqoko se-bivalve mollusks sinezinhlayiya ezihlukahlukene. Bakha ama-mucus nezinye izinto. Ngakho-ke, ngokwesibonelo, e-rock-carvers esiqongweni semilenze kukhona izigulane, ezibeka i-acid, ezikwazi ukubhubhisa i-lime. Lokhu kuvumela ukuthi isilwane siphumelele ngokukhululekile emadwaleni okubala. Imisipha kanye neDreissena kunezigcawu ezigcwala i-bisus. Lesi sici emanzini siyancipha ngesimo sezintambo ezincane, ngendlela i-bivalve mollusks eqiniswe ngayo phezu kwe-substrate.

Isigqoko sesigqoko sinqunywe ngamapulangwe amabili, alenga ezinhlangothini. Ngaphakathi kukhona izigulane. I- rectum, i- genital tract kanye nama-renal ducts nawo avulekele emgodini wezingubo. Amanzi angena nge-siphon ye-gill, isuswa nge-clockal ye-siphon, eyakhiwa yi-marginal post cloth.

Igobolondo lezilwane lenziwa ama-flaps amabili, axhunyiwe ngumgudu osondayo phezulu noma ngamazinyo wokukhiya atholakala ngasemaphethelweni angaphezulu. Kulabo abamele abaningi ekilasini, ama-valve anesayizi esifanayo. Kodwa-ke, kwezinye izinhlobo zezilwane ezilele phansi, zihlukile ngobukhulu nokuma.

Ukuvulwa kwamaphiko kuqhutshwa yisenzo somgudu ohlangene, ohlinzekwa ngezinto ezithintekayo. Ukuphindaphindiwe kubangelwa ukunciphisa izithiyo. Lezi zinhlanzi ezinamandla zibopha zombili izivini. Ukwanda kwegobolondo kungenxa yokufihla kwezingqungquthela ezisezindongweni ezingaphansi. Ebusika, i-bivalve mollusks cishe ayikhuli. Ngenxa yalokho, amaqabunga wonyaka akhiwa emaqabunga. Ngezinombolo zabo, ungakwazi ukunquma ubudala besilwane.

Uhlelo lwesimiso luyakha ama-pair of nerve nodes. Elinye litholakala ngemuva komzimba, okwesibili - emlenzeni, kanti okwesithathu - ngaphezu kwe-pharynx. I-Commissars - izintambo zokuphazamiseka - xhuma wonke ama-node.

Uhlelo lwe-circulatory of mollusks luqukethe izitsha nenhliziyo. Enhliziyweni kukhona i-ventricle eyodwa kuphela, i-atria eminingana. Inombolo yabo ihambelana nenani lamagill ngenxa yokuthi ngamunye wabo uboniswa ukwandiswa kwezitsha ezisuka ezithombeni zokuphefumula. Inhliziyo itholakala ekugcineni komzimba.

Ama-mollusk aphikisanayo anezici zengqondo ezinamandla . Amaseli azwelayo ahlakazekile ezingxenyeni ezihlukene zomzimba. Emagqumeni, kunamalungu ezinzwa zamakhemikhali - i-ophradia. I-Statocysts itholakala emlenzeni. Lezi yizitho zokulingana. Abanye abameleli bama-mollusks bahlukaniswa ukutholakala kwama-ocelli amaningi emaphethelweni.

Umlomo utholakala ngaphezu kwesisekelo sezinyawo phambi kwesiqu. Kunezinhlangothi ezimbili ezinhlangothini. Zihlanganiswa i-epithelium ehlanganisiwe - ama-cilia podgonyayut ayidla inyama yokudla emlonyeni. I-Esophagus mfushane. Ixhunywe nesisu esincane, lapho i-hepatic ducts ivuleka khona. Isifuba sisuka esiswini. Yakha izingodo eziningana, ikhuphukela ohlangothini lwe-dorsal, idlula nge-ventricle nebhayisikili ye-pericardium futhi iphela nge-siphon ye-cloacal.

Ama-molluscs asetshenziswa kakhulu emisebenzini yezomnotho yabantu. Abaningi, isibonelo, ama-scallops, ama-oysters, ama-mussels, asetshenziselwa ukudla.