Teb: Tsis zoo li lwm cov pteridophytes, vegetative prothallus tsis tsim nyob rau hauv selaginella … Cov antherozoids ntawm Selaginella yog qhov tsawg tshaj plaws ntawm cov nroj tsuag vascular. 3. Kev loj hlob ntawm gametophyte los ntawm spore pib ua ntej dehiscence ntawm spore, yog li nws yog hu ua Precocious los yog In-situ germination.
Puas Salvinia puas muaj prothallus?
Nyob Salvinia hom tsis muaj prothallus tab sis muaj Salviniospores. Lus Cim: Prothallus feem ntau yog lub plawv zoo li tus qauv. Nws yog ntsuab thiab muaj ib tug photosynthetic muaj nuj nqi. Thiab tsim los ntawm cov txheej txheem ntawm meiosis.
Puas Salvia muaj prothallus?
Salvinia tsis muaj prothallus vim nws yog heterosporous hauv xwm. Kev piav qhia: Nyob rau hauv feem ntau ntawm Pteridophytes cov spores tsim los ntawm meiosis nyob rau hauv spore niam hlwb ua rau ib tug gametophyte hu ua Prothallus. Nws muaj "ob leeg txiv neej thiab poj niam cev xeeb tub hu ua antheridia thiab archegonia ".
Prothallus nyob rau hauv Ferns nyob qhov twg?
A prothallus, lossis prothallium, (los ntawm Latin pro=forwards thiab Greek θαλλος (thallos)=twig) yog feem ntau yog theem gametophyte hauv lub neej ntawm fernlossis lwm yam pteridophyte. Qee lub sij hawm lo lus kuj tseem siv los piav txog cov tub ntxhais hluas gametophyte ntawm lub liverwort lossis peat moss ib yam nkaus.
YPob heterosporous pteridophytes puas muaj prothallus?
Cov homosporous pteridophytes tsim monoecious prothallus whereas heterosporous pteridophytes daim ntawv the dioecious prothallus.
