Video: Puas yog mosses muaj cov ntaub so ntswg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog li mosses thiab liverworts raug txwv rau qhov chaw noo noo. Mauxes thiab cov kua txiv hmab txiv ntoo yog lumped ua ke bryophytes , nroj tsuag tsis muaj tseeb vascular cov ntaub so ntswg , thiab sib koom ib tug xov tooj ntawm lwm yam primitive zoo. Lawv kuj tsis muaj tseeb stems, cag, los yog nplooj, txawm lawv muaj cov hlwb uas ua cov haujlwm no.
Tom qab ntawd, ib tug kuj nug, Mosses puas muaj cov hlab ntsha?
Mauxes thiab Liverworts. Cov no yog cov me. Qhov tseem ceeb tshaj feature ntawm mosses thiab liverwort yog lawv muaj tsis muaj vascular system . A vascular system nyob rau hauv cov nroj tsuag yog ib tug series ntawm raj uas muaj peev xwm thauj dej thiab as-ham nyob rau hauv ib tug deb.
Tsis tas li ntawd, yuav ua li cas mosses muaj sia nyob tsis muaj cov ntaub so ntswg? Mauxes nqus lawv cov dej thiab cov as-ham ncaj qha rau hauv lawv lub cev, tsis yog los ntawm lawv "cov hauv paus hniav". Hloov chaw ntawm cov hauv paus hniav, lawv muaj rhizoids, uas ua haujlwm kom ruaj khov moss tab sis ua tsis muaj lub luag haujlwm tseem ceeb hauv dej thiab kev nqus dej. Lawv tsis muaj ib hlab ntsha Cov kab mob hauv lawv cov rhizoids thiab hauv lawv qhov chaw saum av.
Tsis tas li ntawd, cov qws mosses puas muaj cov ntaub so ntswg vascular?
Cov nroj tsuag no ua tsis yog muaj vascular ntaub so ntswg , xylem lossis phloem, thauj khoom noj khoom haus, dej, thiab zaub mov. Piv txwv li cov ferns, whisk ferns, club moss , thiab horsetails. Cov ntaub so ntswg tso cai rau cov nroj tsuag no loj hlob tuaj.
Puas yog Charophytes muaj cov ntaub so ntswg?
Cov poj koob yawm txwv ntawm tag nrho cov nroj tsuag tau xav tias zoo ib yam li cov tsiaj hauv pawg ntawm ntsuab algae hu ua charophytes . Charophytes zoo ib yam li cov nroj tsuag niaj hnub. Cov ntaub so ntswg ntxiv txo qhov teeb meem ntawm desiccation vim nws tso cai thauj cov dej thiab cov as-ham thoob plaws hauv cov nroj tsuag.
Pom zoo:
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi
Puas yog bryophytes muaj cov ntaub so ntswg?
Mosses thiab liverworts yog lumped ua ke asbryophytes, cov nroj tsuag tsis muaj tseeb vascular ntaub so ntswg, thiab sib koom ib tug xov tooj ntawm lwm yam primitive zoo. Lawv kuj tsis muaj qhov tseeb, cov hauv paus hniav, lossis nplooj, txawm tias lawv muaj cov hlwb uas ua cov haujlwm no
Puas yog Placozoans muaj cov ntaub so ntswg sib txawv?
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Puas yog lub nucleolus ib feem ntawm cov ntaub so ntswg nuclear?
Lub hnab ntawv nuclear nyob ib puag ncig lub nucleus nrog ob lub membrane nrog ntau qhov pores. Lub nucleolus yog lub hauv paus ntawm lub cell nucleus thiab yog tsim los ntawm ribosomal RNA, proteins thiab DNA