Qhov txawv ntawm Synergid thiab qe Cell

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Qhov txawv ntawm Synergid thiab qe Cell
Qhov txawv ntawm Synergid thiab qe Cell

Video: Qhov txawv ntawm Synergid thiab qe Cell

Video: Qhov txawv ntawm Synergid thiab qe Cell
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Qhov sib txawv tseem ceeb ntawm synergid thiab qe cell yog qhov synergid cell yog ib qho ntawm ob lub hlwb uas nrog lub qe qe thaum lub qe qe yog poj niam gamete lossis poj niam kab mob ntawm angiosperms.

paj yog cov qauv kev loj hlob ntawm cov paj ntoo. Nyob rau hauv lub paj, txiv neej thiab poj niam cov qauv kev ua me nyuam muaj nyob. Lub gynoecium yog tus poj niam cev xeeb tub cov qauv, thiab nws muaj stigma, style thiab zes qe menyuam. Hauv lub zes qe menyuam, poj niam gametophyte yog tam sim no thiab nws tseem hu ua embryo sac lossis megagametophyte. Embryo sac muaj cov poj niam gamete lossis qe cell ntawm angiosperms. Nyob ib ncig ntawm lub qe qe, ob peb lwm lub hlwb tuaj yeem pom. Ntawm cov no, ob lub hlwb sib koom ua ke nrog lub qe qe.

Synergid Cell yog dab tsi?

Embryo sac ntawm angiosperms muaj plaub hom hlwb uas yog cov tshuaj tiv thaiv kab mob, cov hlwb synergid, hauv nruab nrab ntawm tes thiab qe qe. Muaj ob lub hlwb synergid hauv lub hnab embryo. Lawv yog cov hlwb uas nrog thiab txhawb lub qe cell. Lawv nyob nrog lub qe cell. Lo lus 'synergid' yog hais txog 'ua haujlwm ua ke'. Li no ob lub hlwb synergid ua hauj lwm ua ke nrog lub qe cell thaum lub sij hawm fusion ntawm qe cell thiab phev cell. Tsis tas li ntawd, synergids muab kev tiv thaiv thiab cov as-ham rau qe qe.

Qhov sib txawv ntawm Synergid thiab qe Cell
Qhov sib txawv ntawm Synergid thiab qe Cell

Daim duab 01: Synergid Cells hauv Embryo Sac

Thaum pollination tiav lawm, lub paj paj ntoos tsim ntawm qhov qias neeg. Synergid hlwb nyob rau hauv lub embryo sac tsim attractants thiab coj lub paj ntoos raj mus rau lub qe hlwb. Yog li ntawd, ib tug pollen tube loj hlob nyob rau hauv lub stele mus rau lub qe cell ntawm lub embryo sac. Lub raj paj ntoos hlob mus rau hauv ib qho ntawm ob lub hlwb sib koom ua ke. Tom qab ntawd, lub paj paj ntoos nres nws txoj kev loj hlob thiab ruptures tso ob lub phev hlwb. Synergid cell tsav cov phev cell mus rau lub qe cell rau syngamy. Tom qab ntawd lub synergid cell degenerates. Qhov no qhia txog qhov tseem ceeb ntawm cov hlwb synergid rau kev ua tiav fertilization.

Qe Cell yog dab tsi?

Qe cell yog poj niam gamete. Nws tseem hu ua poj niam kab mob cell. Hauv angiosperms, qe cell nyob hauv lub hnab embryo. Nws nrog ob lub hlwb synergid uas ua haujlwm ua ke. Qe cell koom nrog txiv neej gamete (sperm cell) thiab ua tiav cov txheej txheem fertilization. Tom qab lub koomhaum no, nws dhau los ua cov noob ntawm cov paj ntoo.

Qhov txawv tseem ceeb ntawm Synergid thiab qe Cell
Qhov txawv tseem ceeb ntawm Synergid thiab qe Cell

Daim duab 02: Qe Cell

Ntxiv mus, qe cell yog haploid, thiab nws muaj ib nrab ntawm cov chromosomes uas muaj los ntawm lwm lub hlwb. Thaum nws fuses nrog txiv neej gamete, nws yuav ua rau lub cell diploid, uas yog hu ua zygote, thaum kawg yug tau ib tsob nroj tshiab.

Dab tsi yog qhov zoo sib xws ntawm Synergid thiab qe Cell?

  • Nyob rau hauv angiosperms, synergid thiab qe cell nrhiav nyob rau hauv tus poj niam gametophyte, uas yog lub embryo sac.
  • Synergid cells txhawb qe qe kom fertilized nrog cov phev cell.
  • Ob leeg tsim nyog rau kev ua tiav fertilization.
  • Synergid thiab qe Cell tuaj yeem pom hauv gynoecium.

Qhov txawv ntawm Synergid thiab qe Cell yog dab tsi?

Synergid thiab qe cell yog ob hom hlwb hauv poj niam angiosperm gametophyte. Ob lub hlwb synergid nrog lub qe qe thiab ua haujlwm ua ke nrog rau nws kom ua tiav fertilization. Qe cell yog poj niam kab mob cell, thiab nws fuses nrog txiv neej kab mob cell thiab tsim ib tug diploid zygote. Whereas lub synergid hlwb pab lub qe qe los ntawm kev muab kev tiv thaiv thiab cov as-ham. Qhov no yog qhov sib txawv tseem ceeb ntawm synergid thiab qe cell.

Cov hauv qab no nthuav tawm cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm synergid thiab qe cell hauv daim ntawv tabular.

Qhov sib txawv ntawm Synergid thiab qe Cell hauv daim ntawv Tabular
Qhov sib txawv ntawm Synergid thiab qe Cell hauv daim ntawv Tabular

Summary – Synergid vs Egg Cell

Muaj ob lub hlwb synergid hauv lub hnab embryo thaum muaj ib lub qe qe. Synergid cells yog cov hlwb txhawb nqa uas nrog lub qe cell. Qe cell yog poj niam gamete uas sib sau ua ke nrog cov phev cell los yog txiv neej gamete thaum lub sij hawm kev sib deev ntawm angiosperms. Synergids coj lub paj paj ntoos uas nqa cov phev hlwb kom loj hlob mus rau lub qe cell rau fertilization. Tsis tas li ntawd, synergids muab kev tiv thaiv nrog rau cov as-ham rau qe cell. Qhov no yog qhov txawv ntawm synergid thiab qe cell.

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