Tsuas yog cov ntaub so ntswg triploid?

Cov txheej txheem:

Tsuas yog cov ntaub so ntswg triploid?
Tsuas yog cov ntaub so ntswg triploid?

Video: Tsuas yog cov ntaub so ntswg triploid?

Video: Tsuas yog cov ntaub so ntswg triploid?
Video: Plab Plab Ntswg..(Pluav Pluav Ntswg) Maiv Twm New Song 2023-2024 2024, Kaum ib hlis
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Teb: Cov ntaub so ntswg triploid nyob rau hauv fertilized ovule yog endosperm uas yog tsim los ntawm Primary Endosperm nucleus. Qhov kev mob triploid no tau ua tiav los ntawm kev sib xyaw ntawm peb haploid nuclei hu ua triple fusion.

Qhov twg yog piv txwv ntawm cov ntaub so ntswg triploid?

Maize thiab Lily endosperm yog piv txwv ntawm cov ntaub so ntswg triploid.

Cov ntaub so ntswg triploid hu ua dab tsi?

Cov endosperm yog cov ntaub so ntswg tsim hauv cov noob ntawm feem ntau ntawm cov paj ntoo tom qab ob zaug fertilization. Nws yog triploid (lub ntsiab lus peb chromosome teeb tsa ib lub nucleus) hauv ntau hom, uas tej zaum yuav yog auxin-tsav.

Puas yog Nucellus yog cov ntaub so ntswg triploid?

Nws yog triploid ntaub so ntswg.

YPuas yog nucellus hu ua Megasporangium?

Megasporangium no hu ua nucellus hauv angiosperms. Tom qab pib ntawm cov phab ntsa carpel, ib los yog ob lub integuments tshwm sim nyob ze ntawm lub hauv paus ntawm ovule primordium, loj hlob nyob rau hauv ib tug rimlike zam, thiab enclose lub nucellus, tsuas yog ib tug me me qhib hu ua micropyle nyob rau sab saum toj.

Pom zoo:

Thaum twg cov ntaub so ntswg meristematic pom hauv cov nroj tsuag?

Thaum twg cov ntaub so ntswg meristematic pom hauv cov nroj tsuag?

Meristematic cov ntaub so ntswg muaj nyob rau hauv ntau qhov chaw, suav nrog ze rau cov lus qhia ntawm cov hauv paus hniav thiab stems (apical meristems), nyob rau hauv lub buds thiab nodes ntawm stems, nyob rau hauv lub cambium ntawm lub xylem thiab phloem nyob rau hauv cov ntoo dicotyledonous thiab shrubs, nyob rau hauv lub epidermis ntawm dicotyledonous ntoo thiab shrubs (cork cambium), thiab nyob rau hauv pericycle ntawm … Vim li cas cov ntaub so ntswg meristematic

Dab tsi yog mucosa cuam tshuam cov lymphoid cov ntaub so ntswg?

Dab tsi yog mucosa cuam tshuam cov lymphoid cov ntaub so ntswg?

Mucosa-associated lymphoid cov ntaub so ntswg (MALT) yog scattered raws mucosal linings hauv tib neeg lub cev [ 1 , 2 , 3 thiab suav nrog feem ntau ntawm cov ntaub so ntswg lymphoid tib neeg. Cov chaw no tiv thaiv lub cev los ntawm ntau qhov ntau thiab ntau yam antigens.

Puas yog phelloderm yog cov ntaub so ntswg redifferentiated?

Puas yog phelloderm yog cov ntaub so ntswg redifferentiated?

Phelloderm lossis secondary cortex yog tsim los ntawm kev hloov pauv. Lawv yog tsim los ntawm dedifferentiated meristematic hlwb hu ua cork cambium los yog phellogen . Dab tsi yog Redifferentiated ntaub so ntswg? Redifferentiation yog kev tsim cov ntaub so ntswg tshiab lossis txawv ntawm cov ntaub so ntswg sib txawv.

Qhov twg ntawm cov qauv hauv qab no muaj cov ntaub so ntswg rau tus kheej?

Qhov twg ntawm cov qauv hauv qab no muaj cov ntaub so ntswg rau tus kheej?

Qhov twg ntawm cov qauv hauv qab no muaj cov ntaub so ntswg rau tus kheej? Sinoatrial node . Yuav ua li cas yog qhov tseeb ntawm cov khoom uas ua haujlwm nqa lub plawv impulses? Dab tsi yog qhov tseeb ntawm qhov ua haujlwm kom nqa lub plawv dhia?

Puas yog cov ntaub so ntswg adipose suav tias yog cov ntaub so ntswg txuas?

Puas yog cov ntaub so ntswg adipose suav tias yog cov ntaub so ntswg txuas?

Adipose cov ntaub so ntswg, lossis cov ntaub so rog, cov ntaub so ntswgsuav nrog cov roj ntsha tseem ceeb (adipose hlwb, lossis adipocytes), tshwj xeeb los ua ke thiab muaj cov roj loj loj, hauv cov qauv network ntawm fibers . Puas yog cov ntaub so ntswg adipose txuas?