Sclereids muaj nyob hauv cov duab sib txawv (spherical, oval, lossis cylindrical) thiab muaj nyob hauv ntau cov ntaub so ntswg xws li lub periderm, cortex, pith, xylem, phloem, nplooj, thiab txiv hmab txiv ntoo Qhov nyuaj ntawm lub plhaub ntawm txiv ntseej, lub tsho tiv no ntawm ntau cov noob, thiab lub pob zeb ntawm drupes (cherries thiab plums) yog vim li no hom ntawm tes.
Puas yog sclereids pom hauv nplooj tshuaj yej?
Zoo li ntau hom nroj tsuag, hauv tshuaj yej nplooj kuj sclereids, tseem hu ua pob zeb hlwb, tau tsim. Cov no yog cov phab ntsa tuab tuab uas tsis muaj cov ntsiab lus nyob hauv cov kab noj hniav lossis lumen. Cov sclereids tau muab tso rau hauv nplooj lamina ntawm lub kaum sab xis mus rau nruab nrab tav.
Sclerenchyma Fibers pom nyob qhov twg?
Lawv pom muaj nyob hauv lub cortex ntawm stems thiab nyob rau hauv nplooj. Lub luag haujlwm tseem ceeb ntawm sclerenchyma yog kev txhawb nqa. Tsis zoo li collenchyma, cov hlwb paub tab ntawm cov ntaub so ntswg feem ntau tuag thiab muaj cov phab ntsa tuab uas muaj lignin.
Dab tsi yog sclereids hauv biology?
Sclereids yog sclerenchyma hlwb uas txawv ntawm fibers nyob rau hauv ib txoj kev uas lawv txawv nyob rau hauv cov duab Fibers yog elongated hlwb. Sclereids feem ntau yog isodiametric (piv txwv li roughly spherical lossis polyhedral). Tej zaum lawv yuav muaj ceg. Tej zaum lawv yuav tshwm sim ib leeg (ib qho idioblast) lossis hauv pawg me.
Dab tsi yog sclereids muab piv txwv?
Sclereids yog qhov sib txawv heev hauv cov duab thiab muaj nyob hauv ntau cov ntaub so ntswg ntawm cov nroj tsuag, xws li periderm, cortex, pith, xylem, thiab phloem. Lawv kuj tshwm sim hauv nplooj thiab txiv hmab txiv ntoo thiab tsim lub plhaub tawv ntawm txiv ntseej thiab lub tsho tawv tawv ntawm ntau…
