Seashells yog cov exoskeletons ntawm mollusksxws li qwj, clams, oysters thiab ntau lwm tus. Cov plhaub zoo li no muaj peb txheej sib txawv thiab muaj feem ntau ntawm calcium carbonate nrog tsuas yog ib qho me me ntawm cov protein - tsis ntau tshaj 2 feem pua. Cov plhaub no, tsis zoo li cov qauv tsiaj, tsis yog ua los ntawm cov hlwb.
Snail shells tuaj qhov twg?
Ib feem ntawm cov qwj lub cev, hu ua lub mantle, ua cov khoom siv mos mos tshiab thiab qhov no ntxiv rau ntawm ntug ntawm lub plhaub - qhov muag muag no hu ua daim di ncauj. Daim di ncauj ntawm lub plhaub yuav siv sij hawm kom tawv tom qab tsim. Raws li tus qwj thiab nws lub plhaub loj hlob tuaj, tus naj npawb ntawm cov kauv whorls nce.
Hiav txwv snails ua li cas?
Raws li mollusks loj hlob hauv hiav txwv, lawv cov ntaub so ntswg nqus ntsev thiab tshuaj. Lawv zais calcium carbonate, uas ua rau sab nraud ntawm lawv lub cev, tsim lub plhaub tawv. … Thaum ib tug mollusk tuag nws muab nws lub plhaub pov tseg, uas thaum kawg ntxuav ntawm ntug dej. Qhov no yog li cas seashells xaus rau ntawm lub puam.
Hiav txwv snails hloov lub plhaub?
Snails yog, qhov tseeb, yug los nrog lub plhaub, tab sis lawv tsis pib zoo li koj yuav xav txog lawv li cas. … Raws li tus qwj loj hlob zuj zus, nws plhaub loj hlob nrog nws. Cov qwj tsim cov khoom siv plhaub tshiab, zoo li cov khoom muag ntawm nws cov protoconch, uas nthuav nws lub plhaub thiab tom qab ntawd tawv.
Nqaij tuaj yeem tawm ntawm nws lub plhaub?
Aav qwj tsuas yog tuaj yeem tawm ntawm nws lub plhaub thaum ib puag ncig sov thiab noo, cov xwm txheej uas tso cai rau nws mus rau qhov chaw.
