Ob leeg flatworms thiab molluscs yog triploblastic, bilaterally symmetrical, thiab cephalized Tab sis molluscs tau tsim muaj tseeb coelom coelom Lub coelom (los yog celom) yog lub cev tseem ceeb kab noj hniav nyob rau hauv feem ntau cov tsiajthiab yog positioned nyob rau hauv lub cev los puag ncig thiab muaj cov hnyuv thiab lwm yam kabmob. Hauv qee cov tsiaj, nws yog kab nrog mesothelium. Nyob rau hauv lwm yam tsiaj, xws li molluscs, nws tseem undifferentiated. https://en.wikipedia.org › wiki › Coelom
Coelom - Wikipedia
lub cev sab hauv kab noj hniav uas kaw los ntawm mesodermal daim nyias nyias. … Molluscs feem ntau yog dej, thiab muaj npe los ntawm Latin molluscus, txhais tau tias "mos".
Puas yog mollusks cephalized?
Mollusks sawv cev rau lwm pab pawg nyob rau hauv uas cephalization tau ploj mus thiab rov qab los Piv txwv li, bivalves tsis tshwj xeeb cephalized (txawm tias qee cov kws tshawb fawb tau sib cav tias lawv yog "tag nrho lub taub hau"). Txawm li cas los xij, ib yam li cov echinoderms, qee cov mollusks tau rov qab los ntawm cephalization.
Puas cephalization muaj nyob rau hauv molluscs?
feem ntau molluscs muaj qhov tsim tau zoo ntawm cephalization. … feem ntau lwm tus (xav tias clam) yog grazers, scavengers, los yog cephalization.
Yuav ua li cas molluscs tsis yog cephalized?
Bivalve txhais tau tias "ob lub plhaub." Cov tsiaj ntawm no phylum muaj hinged, ob lub plhaub thiab muaj xws li clams, oysters, scallops, thiab mussels. Bivalves yog ib qho kev zam me ntsis rau lub cephalization uas characterizes feem ntau mollusks. Bivalves tsis muaj lub taub hau. Lawv pub zaub mov los ntawm cov dej uas lawv nyob.
Yog Mollusca Diploblastic lossis triploblastic?
Mollusca yog cov tsiaj loj tshaj plaws thib ob. Lawv yog cov av los yog dej. Lawv nthuav qhia lub cev-system theem ntawm lub koom haum. Lawv yog bilaterally symmetrical, triploblastic, coelomate tsiaj.
