Pob bryophytes puas muaj thallus?

Cov txheej txheem:

Pob bryophytes puas muaj thallus?
Pob bryophytes puas muaj thallus?

Video: Pob bryophytes puas muaj thallus?

Video: Pob bryophytes puas muaj thallus?
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Anonim

Nyob rau hauv ib lub bryophyte, tag nrho cov conspicuous vegetative organs-xws li cov photosynthetic nplooj-zoo li cov qauv, lub thallus ("cog lub cev"), qia, thiab cov rhizoid uas anchors cov nroj tsuag mus rau nws substrate-nyob rau hauv lub haploid kab mob. los yog gametophyte.

Puas yog bryophytes thallus?

Cov yam ntxwv dav dav ntawm Bryophytes:

Cov nroj tsuag lub cev yog thallus zoo li, piv txwv li prostrate lossis erect. Nws txuas nrog lub substratum los ntawm rhizoids, uas yog unicellular lossis multicellular. Lawv muaj lub hauv paus zoo li, qia-zoo li thiab nplooj-zoo li cov qauv thiab tsis muaj cov qauv tsim muaj tseeb.

Tus bryophytes twg muaj thallus zoo li lub cev?

Marchantia belongs rau chav kawm hepaticopsida ntawm kev faib Bryophyta. Lawv kuj hu ua liverwort. Lub cev cog yog dorsoventrally flattened thallus.

bryophytes muaj dab tsi?

Mosses thiab liverworts yog lumped ua ke raws li bryophytes, cov nroj tsuag tsis muaj cov ntaub so ntswg tiag tiag, thiab sib koom ntau lwm yam tseem ceeb. Lawv kuj tsis muaj tseeb stems, cag, los yog nplooj, txawm hais tias lawv muaj cov hlwb ua cov haujlwm no.

YPob bryophytes puas muaj apical meristems?

Lub cev bryophyte sporophyte, txawm hais tias qee qhov xav tau los ntawm ib leeg basal thiab apical hlwb (42), tau raug thov los ntawm lwm tus los tsim los ntawm subapical cell divisions; Yog li, ib txwm apical meristem tau hais tias yuav tsis tuaj (43). Tsis tas li ntawd, bryophyte sporophyte tsis proliferate lub cev.

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