Thaum yug, lub visceral hump tig raws nws txoj kab axis, nws thiaj li tsim kom muaj lub plhaub coiled. Cov snails hluas muaj cov plhaub uas ze li pob tshab. Thaum lawv laus zuj zus lawm, lawv cov plhaub tuab dua. Cov qog uas faib thoob plaws hauv lawv lub cev ua kom lub plhaub nrog calcium carbonate.
Nqaij ntses ua li cas?
Lub mantle yog ib yam khoom tseem ceeb uas muaj los ntawm mollusks xws li qwj. … Calcium carbonate yog cov khoom tseem ceeb hauv cov qwj nplais (txawm tias cov protein me me kuj nkag mus rau hauv qhov sib tov). Yog li txhawm rau tsim cov plhaub no, lub mantle tsim hluav taws xob tam sim no uas pab lub cev thawb calcium ions rau hauv qhov chaw.
Snails yug los nrog plhaub?
Tom qab ob peb lub lis piam, cov qe tawm thiab me me qwj tawm - twb nrog lawv cov plhaub ! … Tus me nyuam qwj noj lub qe uas nws hle vim lub qe muaj calcium uas pab nws lub plhaub tawv. Lub hlis tom ntej no, thaum cov qwj loj tuaj, lub plhaub yuav loj tuaj nrog nws.
Lub plhaub tsim li cas?
Raws li mollusks nyob lawv lub neej niaj hnub hauv hiav txwv, lawv noj ntsev thiab tshuaj lom neeg los ntawm cov dej nyob ib puag ncig lawv. Thaum lawv ua cov ntaub ntawv no, lawv tso tawm calcium carbonate, uas tawv rau sab nraud ntawm lawv lub cev thiab pib tsim lub plhaub tawv tawv.
Nqaij yuav nyob tsis muaj nws lub plhaub?
Tu siab ntau zaus tshaj qhov tsis zoo. Snails feem ntau tuaj yeem tsuas yogkho me ntsis kev puas tsuaj rau lawv cov plhaub, zaj dab neeg nplij siab uas qwj tuaj yeem 'tsav' mus rau qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob
