: symmetry nyob rau hauv uas zoo sib xws anatomical qhov chaw yog teem nyob rau hauv opposite sab ntawm ib tug nruab nrab axis kom tsuas yog ib lub dav hlau thiaj li faib tus neeg mus rau hauv ib qho tseem ceeb halves.
Yuav ua li cas ob tog symmetry tso cai rau txhais lus nug?
bilateral symmetry. Muab faib ua daim iav-duab ib nrab ntawm ib lub dav hlau uas khiav mus rau nruab nrab.
ob tog symmetry tso cai dab tsi?
Cov txiaj ntsig. Bilateral symmetry txhais tau hais tias lub cev tuaj yeem faib raws lub dav hlau uas faib cov tsiaj rau sab laug thiab sab xis. Tib neeg, dev, thiab txawm sharks tuaj yeem pom ob sab symmetry. Tsim ib lub taub hau thiab tail cheeb tsam.
Koj piav li cas rau daim duab nrog ob sab sib luag?
Definition of Bilateral Symmetry
Thaum ib lub cev muaj ob tog sib luag, koj tuaj yeem kos ib txoj kab kev xav (qhov no yog hu ua lub dav hlau sagittal) los ntawm qhov kawg ntawm nws snout mus rau qhov kawg ntawm nws sab nraub qaum, thiab ntawm ob sab ntawm kab no yuav yog ib nrab uas yog daim iav duab ntawm ib leeg.
Koj txhais li cas los ntawm ob tog symmetry piav nrog piv txwv?
Lub cev ntawm ib lub cev tau muab faib ua ob qho tib si sab xis thiab sab laug los ntawm kev txiav nws tsuas yog ntawm qhov nruab nrab axis lossis ntev axis ntawm tus tsiaj Nyob rau hauv cov tsiaj uas muaj ob sab symmetry kab mob yog zoo tsim. Nyob rau hauv lawv, lub coelomic kab noj hniav yuav tsis tuaj los yog zoo tsim. Piv txwv li, Planaria (Platyhelminthes) thiab lwm yam.
