Qhov sib txawv tseem ceeb ntawm cov hauv paus plaub hau thiab qia plaub hau yog cov hauv paus plaub hau yog cov qauv unicellular tsim los ua ib qho kev loj hlob ntawm cov epidermis, thaum cov qia plaub hau yog ib tug multicellular qauv uas tsis yog ib tug outgrowth ntawm lub epidermis.
Caum thiab qia yog ob qhov tseem ceeb ntawm cov nroj tsuag. Cov qia muaj nyob saum npoo ntawm cov av thaum cov cag muaj nyob hauv cov av. Stems loj hlob upright thaum cov hauv paus hniav hlob mus rau hauv av. Li no, qia qhia tau hais tias zoo phototropic txav, thaum lub hauv paus qhia qhov zoo geotropic txav. Stems muaj qia plaub hau, uas yog cov txheej txheem multicellular. Ib yam li ntawd, cov hauv paus hniav muaj cov hauv paus plaub hau, uas yog cov qauv unicellular. Structurely, qia plaub hau yog cov hlwb ntxiv, thaum cov plaub hau hauv paus yog outgrowths ntawm epidermis. Ib yam li ntawd, muaj ntau qhov sib txawv ntawm cov hauv paus plaub hau thiab qia plaub hau, uas peb yuav tau tham hauv kab lus no.
Cov plaub hau yog dab tsi?
cag plaub hau yog ib qho tseem ceeb ntawm cov nroj tsuag. Nws yog ib tug unicellular thiab tubular qauv tsim raws li ib tug outgrowth ntawm epiblema hlwb. Tsis tas li ntawd, cov plaub hau no tsuas yog nyob rau thaj tsam ntawm kev loj hlob ntawm cov hauv paus hniav. Feem ntau, cov plaub hau no yog unbranched lateral extensions tsim los nqus dej thiab as-ham los ntawm cov av. Yog li ntawd, cov plaub hau hauv paus muaj ib thaj tsam loj. Dej nkag mus rau cytoplasm ntawm cov hauv paus plaub hau ntawm tes ntawm osmosis. Nws tshwm sim vim cov dej tsis tshua muaj peev xwm ntawm cov hauv paus plaub hau piv rau cov dej muaj peev xwm ntawm cov av tov.
Daim duab 01: hauv paus plaub hau ntawm lub hauv paus tswv yim
Cov plaub hau hauv paus pom nyob rau hauv lub teeb pom kev zoo nrog rau peb qhov muag liab qab. Tsis zoo li lwm cov nroj tsuag, lawv cov hlwb tsis muaj chloroplasts. Tsis tas li ntawd, cov plaub hau no muaj sia nyob ib ntus, thiab cov plaub hau tshiab hloov cov qub tas li. Lawv lub neej yog li ntawm ob mus rau peb lub lis piam, thiab tom qab ntawd lawv tuag, tso cov plaub hau tshiab tawm.
Cov plaub hau yog dab tsi?
qia plaub hau yog cov txheej txheem ntau lub cell faib thoob plaws hauv cov qia ntawm cov nroj tsuag. Tsis zoo li cov hauv paus plaub hau, lawv tsis yog outgrowths ntawm epidermis. Lawv yog cov hlwb ntxiv. Thiab, txoj haujlwm tseem ceeb ntawm cov plaub hau qia yog txo tus nqi ntawm transpiration.
Daim duab 02: Kab plaub hau
Ntxiv mus, qia plaub hau raug txiav, tsis zoo li cov hauv paus plaub hau. Tsis tas li ntawd, lawv tuaj yeem raug branched los yog unbranched. Tsis tas li ntawd, lawv muaj sia nyob ntev ntawm cov qia ntawm cov nroj tsuag.
Dab tsi zoo sib xws ntawm cov hauv paus plaub hau thiab qia plaub hau?
- cag cov plaub hau thiab qia plaub hau yog ob lub qauv ntawm cov nroj tsuag.
- Lawv yog lateral extensions.
- Tsis tas li, ob qho tib si yog qhov tseem ceeb vim lawv ua haujlwm tseem ceeb hauv cov nroj tsuag.
- Ntxiv mus, ob qho tib si pom ntawm peb qhov muag tsis pom.
- Qee cov plaub hau thiab tag nrho cov hauv paus plaub hau yog unbranched.
Qhov txawv ntawm cov plaub hau thiab qia plaub hau yog dab tsi?
Cov plaub hau yog ib qho kev loj hlob ntawm cov epidermis, uas absorbs dej thiab cov as-ham los ntawm cov av. Whereas, qia plaub hau yog ib tug lateral extension tam sim no ntawm qia, uas txo cov transpiration. Nws tsis yog qhov kev loj hlob ntawm cov epidermis. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov hauv paus plaub hau thiab qia plaub hau. Tsis tas li ntawd, cov plaub hau hauv paus yog ib txwm muaj unicellular qauv, thaum qia plaub hau yog feem ntau multicellular. Yog li ntawd, qhov no kuj yog qhov sib txawv tseem ceeb ntawm cov hauv paus plaub hau thiab qia plaub hau.
Ntxiv mus, cov plaub hau hauv paus yog ib txwm tsis muaj ceg, thaum qia cov plaub hau tuaj yeem ua tsis tau ceg lossis ceg. Tsis tas li ntawd, qia plaub hau muaj nyob txhua qhov chaw ntawm qia, thaum cov plaub hau hauv paus muaj nyob rau ntawm ib cheeb tsam ntawm cov hauv paus hniav.
Cov lus qhia hauv qab no qhia txog qhov sib txawv ntawm cov hauv paus plaub hau thiab qia plaub hau, sib piv.
Summary – Root Hair vs Stem Hair
Cov plaub hau hauv paus yog qhov kev loj hlob ntawm epidermis ntawm cov hauv paus hniav thaum qia cov plaub hau yog lateral extensions tam sim no thoob plaws hauv lub qia ntawm cov nroj tsuag. Tab sis, lawv tsis yog outgrowths ntawm lub epidermis. Yog li, peb tuaj yeem xav txog qhov no yog qhov sib txawv tseem ceeb ntawm cov hauv paus plaub hau thiab qia plaub hau. Tsis tas li ntawd, cov plaub hau hauv paus yog unicellular thaum qia plaub hau yog feem ntau multicellular. Tsis tas li ntawd, cov plaub hau hauv paus yog unbranched thaum qia cov plaub hau tuaj yeem tau branched los yog unbranched. Ntxiv mus, cov hauv paus plaub hau absorbs dej thiab cov as-ham los ntawm cov av thaum qia plaub hau txo tus nqi ntawm transpiration. Yog li, qhov no qhia txog qhov sib txawv ntawm cov hauv paus plaub hau thiab qia plaub hau.
