Qhov txawv ntawm Pericycle thiab Endodermis

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Qhov txawv ntawm Pericycle thiab Endodermis
Qhov txawv ntawm Pericycle thiab Endodermis

Video: Qhov txawv ntawm Pericycle thiab Endodermis

Video: Qhov txawv ntawm Pericycle thiab Endodermis
Video: Qhov Txawv Ntawm Lus Hmoob Thiab Lus Mab Mawb 2024, Hlis ntuj nqeg
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Qhov sib txawv tseem ceeb ntawm pericycle thiab endodermis yog tias pericycle yog lub tog raj kheej ntawm parenchyma lossis sclerenchyma hlwb uas nyob ib puag ncig lub nplhaib ntawm cov hlab ntsha hauv lub stele, thaum endodermis yog lub tog raj kheej ntawm cov hlwb uas cais lub cortex ntawm lub stele.

Pericycle thiab endodermis yog ob hom cell cylinders pom hauv cov hauv paus hniav. Endodermis thiab pericycle nyob ze rau ib leeg. Raws li txoj cai, pericycle nyob rau hauv lub endodermis. Lub endodermis yog lub innermost cell cylinder ntawm lub cortex thaum pericycle yog lub sab nraud ntawm tes lub tog raj kheej ntawm stele. Yog li ntawd, endodermis cais lub cortex los ntawm stele thaum pericycle kos rau sab nraud ntawm stele. Ob txheej ntawm cov hlwb yog tsim los ntawm cov ntaub so ntswg hauv av. Txawm li cas los xij, pericycle yog multilayered thaum endodermis yog ib txheej ntawm tes.

Pericycle yog dab tsi?

Lub pericycle yog ib lub tog raj kheej ntawm parenchyma lossis sclerenchyma hlwb nyob rau hauv lub endodermis. Nws tseem yog txheej txheej ntawm tes uas demarcates lub stele ntawm cov nroj tsuag. Pericycle tshwm sim los ntawm procambium. Li no, nws tuaj yeem suav tias yog ib feem ntawm cov ntaub so ntswg.

Qhov sib txawv ntawm Pericycle thiab Endodermis
Qhov sib txawv ntawm Pericycle thiab Endodermis

Daim duab 01: Pericycle

Ntxiv mus, nws muaj peev xwm tsim cov hauv paus hniav. Thaum lub sij hawm kev loj hlob theem nrab, pericycle pab txhawb rau vascular cambium. Lub pericycle tseem yuav tsum tau rau xylem loading hauv paus.

Endodermis yog dab tsi?

Lub endodermis yog txheej txheej cortical innermost. Yog li ntawd, nws yog ciam teb ntawm cortex thiab nws cais cortex los ntawm stele. Nws yog ib txheej txheej ntawm lub thoob-zoo li cov cell. Nws ncig lub pericycle ntawm cov hauv paus hniav thiab stems. Zoo ib yam li pericycle, endodermis kuj yog cov ntaub so ntswg uas tsis muaj vascular. Nws yog tsim los ntawm parenchyma hlwb.

Qhov txawv tseem ceeb - Pericycle vs Endodermis
Qhov txawv tseem ceeb - Pericycle vs Endodermis

Daim duab 02: Endodermis

Cov phab ntsa ntawm tes ntawm endodermis muaj Casparian strips, uas yog dej-impermeable deposits ntawm suberin. Functionally, endodermis pab tswj cov dej ntws thiab cov dej yaj los ntawm cov cortex ib puag ncig. Ntxiv mus, endodermis khaws cov hmoov txhuv nplej siab hauv cov nroj tsuag.

Dab tsi yog qhov zoo sib xws ntawm Pericycle thiab Endodermis?

  • Pericycle thiab endodermis yog ob txheej txheej ntawm tes pom hauv cov nroj tsuag hauv paus thiab stems.
  • Lawv yog cov ntaub so ntswg.
  • Ntxiv mus, lawv yog cov ntaub so ntswg uas tsis yog vascular.
  • Pericycle lies nyob rau hauv lub endodermis.
  • Ob lub pericycle thiab endodermis ua tiav cov haujlwm tseem ceeb hauv cov nroj tsuag.

Qhov txawv ntawm Pericycle thiab Endodermis yog dab tsi?

Pericycle yog txheej txheej txheej ntawm tes ntawm stele hauv paus thiab qia ntawm cov nroj tsuag feem ntau. Nyob rau hauv sib piv, endodermis yog innermost cortical cell txheej uas cais cortex los ntawm lub stele. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm pericycle thiab endodermis. Dhau li ntawd, lwm qhov sib txawv ntawm pericycle thiab endodermis yog tias lub pericycle yog nyob nruab nrab ntawm cov endodermis thiab vascular bundles, thaum lub endodermis nyob rau hauv nruab nrab ntawm lub pericycle thiab cortex.

Ntxiv mus, pericycle yog multilayered thaum endodermis yog ib txheej ntawm tes. Tsis tas li ntawd, pericycle yog koom nrog xylem loading, lateral cag pib, thiab kev loj hlob theem nrab. Lub caij no, endodermis pab tswj cov dej ntws thiab cov tshuaj yaj yeeb los ntawm ib puag ncig cortex. Yog li, qhov no yog qhov ua haujlwm sib txawv ntawm pericycle thiab endodermis.

Hauv qab infographic qhia txog qhov sib txawv ntawm pericycle thiab endodermis.

Qhov sib txawv ntawm Pericycle thiab Endodermis hauv Tabular Form
Qhov sib txawv ntawm Pericycle thiab Endodermis hauv Tabular Form

Summary – Pericycle vs Endodermis

Pericycle thiab endodermis yog ob hom cell txheej tshwj xeeb rau cov nroj tsuag. Pericycle encircles vascular cov ntaub so ntswg ntawm cov hauv paus hniav thiab qia. Nws yog txheej txheej ntawm tes ntawm stele. Meanwhile, endodermis ncig lub pericycle. Yog li ntawd, endodermis yog lub innermost cell txheej ntawm lub cortex. Ntxiv mus, pericycle muaj ib lossis ob txheej ntawm tes, thaum lub endodermis yog ib txheej ntawm tes. Tsis tas li ntawd, cov hauv paus hniav tshiab pib loj hlob los ntawm pericycle, thaum endodermis tswj cov dej ntws thiab cov dej yaj los ntawm cov cortex ib puag ncig. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm pericycle thiab endodermis.

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