Qhov txawv ntawm Integument thiab Testa

Cov txheej txheem:

Qhov txawv ntawm Integument thiab Testa
Qhov txawv ntawm Integument thiab Testa

Video: Qhov txawv ntawm Integument thiab Testa

Video: Qhov txawv ntawm Integument thiab Testa
Video: Kawm Blend Consonant, Cov ob tug niam ntawv English lub suab hais li cas Qib-3 2024, Kaum ib hlis
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Kev sib deev kev sib deev tshwm sim ntawm ob hom gametes: txiv neej thiab poj niam gametes. Lub ovule yog poj niam gamete thaum paj ntoos nqa txiv neej gametes. Txiv neej thiab poj niam gametes sib sau ua ke thiab tsim ib tug diploid zygote. Lub zes qe menyuam yog cov qauv uas nqa lub ovule. Integuments yog kev tiv thaiv npog ntawm ovule. Tom qab fertilization, lub ovule loj hlob mus rau hauv ib lub noob. Whereas, sab nrauv integument txhim kho rau hauv cov noob lub tsho hu ua testa.

Integument yog dab tsi?

Lub integument yog lub npog sab nrauv ntawm ovule. Nws yog txheej tiv thaiv. Gymnosperms muaj ib qho kev sib koom ua ke thaum muaj ob qho kev sib koom ua ke nyob ib puag ncig lub ovule hauv angiosperms. Structurally, lub integument yog nyias thiab du. Nws muaj cov cell muaj sia. Li no, nws tsis muaj sclereids, tsis zoo li testa.

Qhov Tseem Ceeb Qhov txawv - Integument vs Testa
Qhov Tseem Ceeb Qhov txawv - Integument vs Testa

Daim duab 01: Integument

Tsis tas li ntawd, integuments tsis kaw lub nucellus kiag li. Nucellus tseem qhib ntawm micropyle los pab txhawb kev nkag mus ntawm pollens hauv ovule rau syngamy. Integuments pib los ntawm chalazal kawg ntawm lub ovule. Nws yog ua tau ib tug pre-fertilization qauv. Yog li, integument txhim kho mus rau hauv lub tsho tiv no los yog noob tom qab fertilization thiab maturation.

Testa yog dab tsi?

Testa yog qhov kev tiv thaiv sab nraud ntawm cov noob. Yog li, nws yog ib qho ntawm ob lub tsho tiv no uas yog brownish hauv xim. Sab nraud integument muab nce rau testa. Yog li ntawd, nws yog ib tug post-fertilization qauv. Structurally, muaj ob txheej ntawm testa li endotesta thiab exotesta. Nws lub luag haujlwm tseem ceeb yog los tiv thaiv cov embryo tsim los ntawm kev puas tsuaj thiab lub cev qhuav dej.

Qhov txawv ntawm Integument thiab Testa
Qhov txawv ntawm Integument thiab Testa

Daim duab 02: Testa

Ntxiv mus, lub testa tiv thaiv cov noob thaum lub sij hawm cov noob tawg. Yog li ntawd, nws yog ib qho tuab thiab tawv npog uas muaj cov hlwb tuag xws li sclereids. Tsis tas li ntawd, nws yog impermeable rau dej. Qee zaum cov cuab yeej ntawm testa ua rau cov noob dormancy.

Dab tsi yog qhov zoo sib xws ntawm Integument thiab Testa?

  • Integument thiab testa tuaj yeem pom hauv cov paj ntoo.
  • Ob lub qauv muaj feem cuam tshuam nrog kev sib deev ntawm cov nroj tsuag.
  • Ntxiv mus, integuments tsim rau hauv lub tsho tiv no thaum lub ovule matures tom qab fertilization.

Qhov txawv ntawm Integument thiab Testa yog dab tsi?

Integument thiab testa yog ob sab sab nraud. Integument ncig lub ovule thaum testa ncig lub noob. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm integument thiab testa. Ntxiv mus, lub integument yog ib tug du thiab nyias txheej muaj li ntawm cov cell nyob. Nyob rau hauv sib piv, testa yog ib tug tuab thiab tawv txheej uas muaj feem ntau ntawm cov hlwb tuag. Tsis tas li ntawd, integument tiv thaiv lub ovule thaum testa tiv thaiv cov noob. Yog li, qhov no kuj yog qhov sib txawv tseem ceeb ntawm integument thiab testa. Ntxiv rau cov no, cov kev sib koom ua ke yog cov qauv ua ntej fertilization, thaum testa yog cov qauv tom qab fertilization.

Qhov txawv ntawm Integument thiab Testa hauv Tabular Form
Qhov txawv ntawm Integument thiab Testa hauv Tabular Form

Summary – Integument vs Testa

Cov integument yog qhov npog sab nraud ntawm ovule. Yog li ntawd, nws tiv thaiv lub ovule. Nws yog ib txheej nyias muaj li ntawm cov hlwb nyob. Testa, ntawm qhov tod tes, yog kev tiv thaiv sab nrauv ntawm cov noob. Nws yog ib qho tuab thiab tawv npog tsim los ntawm cov hlwb tuag, feem ntau yog sclereids. Tom qab fertilization, txheej integument tsim mus rau testa. Testa tiv thaiv cov noob. Nws kuj plays lub luag haujlwm loj hauv cov noob dormancy. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm integument thiab testa.

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