Puas yog lichens asexual?
Puas yog lichens asexual?

Video: Puas yog lichens asexual?

Video: Puas yog lichens asexual?
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Anonim

Feem ntau lichens yug me nyuam asexually ; thaum tej yam kev mob zoo lawv yuav tsuas nthuav dav thoob plaws lub pob zeb los yog tsob ntoo. Nyob rau hauv qhuav tej yam kev mob lawv ua crumbly thiab me me pieces yuav tawg tawm thiab dispersed los ntawm cua. Cov kab mob fungal feem ntau lichens Tej zaum kuj tseem yuav tsim kev sib deev los tsim cov spores.

Tom qab ntawd, ib tug kuj nug, ua lichens photosynthesis?

Lichens ua tsis muaj cov hauv paus hniav uas nqus dej thiab cov as-ham zoo li cov nroj tsuag ua , tab sis zoo li cov nroj tsuag, lawv tsim lawv tus kheej cov khoom noj los ntawm photosynthesis . Lichens tshwm sim los ntawm hiav txwv theem mus rau siab alpine elevations, nyob rau hauv ntau ib puag ncig tej yam kev mob, thiab yuav loj hlob nyob rau hauv yuav luag txhua qhov chaw.

Ib yam li ntawd, lichens piav txog ntau hom kev yug me nyuam hauv lichens li cas? Lichens feem ntau yug me nyuam vegetatively (asexually) los ntawm soredia thiab isidia. Lub isidia yog elongated outgrows los ntawm thallus uas tawg tawm rau dispersal. Lub soredia yog cov pab pawg me ntawm cov hlwb algal ncig los ntawm fungal filaments. Lawv sib sau ua ke hauv soralia uas zaum ntawm qhov chaw thallus.

Yog li ntawd, lichens tsim li cas?

Lichens yog tsim los ntawm kev sib xyaw ua ke ntawm tus khub fungal (mycobiont) thiab tus khub algal (phycobiont). Cov fungal filaments ncig thiab loj hlob mus rau hauv lub hlwb algal, thiab muab feem ntau ntawm cov lichen cov lub cev ntau thiab cov duab. Rau ib lichen yug me nyuam, tab sis cov fungus thiab alga yuav tsum sib cais ua ke.

Dab tsi yog txiv neej lub cev xeeb tub hu ua lichens?

Cov txiv neej yug me nyuam cev yog hu ua spermogonium thiab poj niam carpogonium. (a) Spermogonia: Hauv qee hom lichens cov pycnidia zoo li cov qauv (Fig. 20.8 A) tau tshaj tawm tias ua haujlwm li spermogonia.

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