Sclerenchyma yog cog cov ntaub so ntswg muab cov neeg kho tshuab tawv thiab lub zog. Fibers thiab sclereids yog hom loj ntawm sclerenchyma hlwb. Feem ntau cov hlwb sclerenchyma qhia txog kev loj hlob. Cov phab ntsa ntawm tes ntawm sclerenchyma muaj thickened ob txheej txheej ua los ntawm cellulose, hemicelluloses thiab lignin.
sclereids thiab fibers yog dab tsi?
Qhov sib txawv tseem ceeb ntawm fibers thiab sclereids yog fibres yog unbranched, elongated cells whereas sclereids luv luv, isodiametric lossis cov hlwb tsis sib xws uas tej zaum yuav muaj ceg lossis tsis muaj ceg. … Fibers los ntawm meristematic hlwb thaum sclereids yog tsim los ntawm ob phab ntsa thickening ntawm parenchyma hlwb.
sclereids thiab sclerenchyma Fibers nyob qhov twg?
Hint: Fibers thiab sclereids, ob leeg yog sclerenchyma hlwb pom hauv cov nroj tsuag, thiab lawv yog cov ntaub so ntswg yooj yim thiab tsis muaj sia thiab lub luag haujlwm tseem ceeb ntawm cov hlwb yog muab cov ntaub so ntswg. kev txhawb nqa rau cov nroj tsuag. Thiab ob lub hlwb muaj cov lignin tuab hauv lawv cov phab ntsa.
piv txwv ntawm sclerenchyma yog dab tsi?
Flax bast fiber cells yog ib qho piv txwv zoo tshaj plaws ntawm sclerenchyma fibers, nrog rau cov phab ntsa txawv txawv ntawm tes thiab ntev. Lawv lub luag haujlwm tseem ceeb yog muab lub zog rau qhov ntev (1 m) thiab nyias (2 hli) flax qia.
Koj txhais li cas los ntawm sclereids thiab Fibers hauv sclerenchyma?
Muaj ob hom sclerenchyma hlwb: lub cell fiberthiab cov pob zeb los yog sclereids. 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 ceg.
