Cov protonema, uas loj hlob ncaj qha los ntawm germinating spore, yog nyob rau hauv feem ntau mossesib qho kev nthuav dav, cov kab ke ntawm ntau lub cellular filaments uas nplua nuj nyob hauv chlorophyll. Qhov theem no pib tsim cov tshuaj hormones uas cuam tshuam rau kev loj hlob ntxiv ntawm cov hlwb tshiab.
YPuas yog protonema pom hauv Pteridophytes?
Diploid thiab pom muaj nyob rau hauv pteridophytes. D. Haploid thiab pom nyob rau hauv pteridophyte. Lus Cim: Daim ntawv gametophyte qhia ntau theem kev loj hlob xws li cov spore, protonema, thiab gametophore, uas ua rau cov kab mob sib deev.
Pob bryophytes puas muaj protonema?
Moss spores germinate los ua ib qho alga-zoo li filamentous qauv hu ua protonema. … Cov no ua rau gametophores, stems thiab nplooj zoo li cov qauv. Bryophytes tsis muaj nplooj tiag(megaphyll. Protonemata yog tus yam ntxwv ntawm tag nrho cov mosses thiab qee lub siab tab sis tsis tuaj ntawm hornworts.
Puas pom protonema hauv Funaria?
Teb tiav: Protonema tuaj yeem pom hauv Funaria raws li nws yog hom moss. … Cov protonema tom qab ntawd txhim kho mus rau hauv cov nplooj ntoo gametophore, tus neeg laus daim ntawv ntawm Funaria, uas yog nws daim ntawv ntau dua. Cov theem protonema koom nrog rau theem haploid ntawm moss.
piv txwv protonema yog dab tsi?
(i) Protonema - Nws yog ib qho creeping, ntsuab, branched thiab nquag filamentous theem. Nws yog ib tug haploid, ywj siab, gametophytic theem nyob rau hauv lub neej voj voog ntawmmosses. Nws yog tsim los ntawm spores thiab ua rau cov nroj tsuag tshiab. Piv txwv – Funaria, polytrichum thiab sphagnum.
