Qhov sib txawv tseem ceeb ntawm protostele thiab siphonostele yog tias protostele yog hom qub tshaj plaws ntawm stele uas muaj cov tub ntxhais ntawm xylem tsis muaj lub hauv paus pith thaum siphonostele yog kev hloov kho ntawm protostele uas muaj cov kab mob cylindrical vascular nyob ib puag ncig ib puag ncig. central pith.
Lub stele yog qhov nruab nrab ntawm lub qia lossis hauv paus uas muaj cov ntaub so ntswg thiab lwm cov ntaub so ntswg hauv av. Stele muaj cov ntaub so ntswg muab tau los ntawm cov procambium xws li vascular cov ntaub so ntswg, pith, pericycle, thiab lwm yam. Hauv cov lus yooj yim, stele yog lub hauv paus cheeb tsam endodermis ib puag ncig. Protostele thiab siphonostele yog ob hom steles muaj nyob hauv cov nroj tsuag. Protostele yog hom qub tshaj plaws ntawm stele tam sim no hauv cov nroj tsuag qis thaum siphonostele yog ntau dua stele tam sim no hauv lwm cov nroj tsuag.
YProtostel yog dab tsi?
Protostele yog ib qho ntawm ob hom steles tam sim no hauv cov nroj tsuag. Tus cwj pwm, nws muaj ib qho tseem ceeb ntawm cov ntaub so ntswg vascular ntawm qhov chaw. Yog li ntawd, nws tsis muaj lub hauv paus pith. Tsis tas li ntawd, nws yog ib hom ntawm cov khoom qub qub uas muaj nyob rau hauv cov nroj tsuag thaum ntxov vascular.
Daim duab 01: Protosteles
Haplostele, actinostele, thiab plectostele yog peb hom protosteles uas tuaj yeem pom hauv cov nroj tsuag.
Siphonostele yog dab tsi?
Siphonostele yog hom thib ob ntawm stele tam sim no hauv cov nroj tsuag uas muaj lub hauv paus pith. Vascular cov ntaub so ntswg tshwm sim nyob rau hauv ib tug cylindrical yam ncig lub central pith. Tsis tas li ntawd, hom stele no muaj nyob rau hauv cov paj ntoo thiab hauv ferns.
Daim duab 02: Siphonostele
Tsis tas li, muaj peb hom siphonosteles li solenostele, dictyostele, thiab eustele.
Qhov Zoo sib xws ntawm Protostele thiab Siphonostele yog dab tsi?
- Protostele thiab siphonostele yog ob hom steles tam sim no hauv cov nroj tsuag.
- Ob leeg muaj cov ntaub so ntswg tau los ntawm procambium.
- Tsis tas li, lawv muaj cov ntaub so ntswg.
- Tsis tas li ntawd, lawv muaj nyob hauv stems thiab hauv paus.
Qhov txawv ntawm Protostele thiab Siphonostele yog dab tsi?
Protostele muaj lub hauv paus tseem ceeb ntawm cov hlab ntsha ntawm qhov chaw ntawm lub stele thaum siphonostele tsis muaj cov tub ntxhais ntawm cov hlab ntsha ntawm qhov chaw. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm protostele thiab siphonostele. Tsis tas li ntawd, lwm qhov sib txawv tseem ceeb ntawm protostele thiab siphonostele yog qhov protostele tsis muaj lub hauv paus pith thaum siphonostele muaj lub hauv paus pith.
Ntxiv mus, protostele muaj nyob rau hauv cov nroj tsuag thaum ntxov vascular thaum siphonostele muaj nyob rau hauv ntau ferns thiab flowering nroj tsuag. Yog li, qhov no yog qhov sib txawv ntxiv ntawm protostele thiab siphonostele. Cov nram qab no infographic nthuav tawm cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm protostele thiab siphonostele.
Summary – Protostele vs Siphonostele
Protostele thiab siphonostele yog ob hom steles pom hauv cov nroj tsuag thiab cov hauv paus hniav. Protostele yog hom qub tshaj plaws ntawm stele thaum siphonostele yog kev hloov kho ntawm protostele. Tsis tas li ntawd, protostele muaj lub hauv paus ntawm cov ntaub so ntswg vascular. Yog li ntawd, nws tsis muaj lub hauv paus pith. Ntawm qhov tod tes, siphonostele muaj lub hauv paus pith. Vascular cov ntaub so ntswg ncig lub hauv paus pith nyob rau hauv ib tug cylindrical yam. Muaj peb hom protosteles thiab peb hom siphonosteles. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm protostele thiab siphonostele.
