Video: Yuav ua li cas spores tsim?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Spores feem ntau yog haploid thiab unicellular thiab yog tsim los ntawm meiosis nyob rau hauv lub sporangium ntawm ib tug diploid sporophyte. Nyob rau hauv tej yam kev mob zoo lub spore tuaj yeem txhim kho mus rau hauv cov kab mob tshiab uas siv mitotic division, tsim cov multicellular gametophyte, uas nws thiaj li mus rau tsim gametes.
Nyob rau hauv no hais txog, dab tsi yog cov txheej txheem ntawm spore tsim?
Spore tsim yog ib txoj kev ntawm asexual reproduction. Spores yog unicellular reproductive lub cev muaj nyob rau hauv lub hnab hu ua sporangia. Thaum twg spores mature sporangia tawg thiab spores yog nqa mus rau qhov chaw sib txawv ntawm huab cua, cua, dej. Thaum twg spores poob rau hauv av uas tsim nyog, lawv germinate thiab tsim cov neeg tshiab.
Ib tug kuj nug, qhov twg spores tsim? Hauv khob fungi, lub spore - tsim tawm asci nyob rau sab hauv ntawm lub cev fruiting paub tab. Spores raug tso tawm hauv huab thaum lub asci tawg qhib. Gilled nceb muaj basidia nyob rau ntawm gills nyob rau hauv qab ntawm lub hau. Cov spores tau poob los ntawm gills thaum paub tab.
Hais txog qhov no, yuav ua li cas spores tsim nyob rau hauv fungi?
Fungi reproduce asexually los ntawm fragmentation, budding, los yog tsim spores . Fragments ntawm hyphae tuaj yeem loj hlob tuaj tshiab. Feem ntau hom ntawm asexual reproduction yog los ntawm cov tsim ntawm asexual spores , uas yog tsim los ntawm ib tug niam txiv nkaus xwb (los ntawm mitosis) thiab yog genetically zoo tib yam rau leej niam leej txiv.
Yuav ua li cas spores dispersed?
Cov spores ntawm ib co fungi cais tawm nyob rau hauv dej los yog nyob rau saum npoo ntawm dej. Cov tshuaj muaj pes tsawg leeg ntawm phab ntsa ntawm cov no spores ua rau lawv "tsis-wettable" ces lawv yuav tsis tog. Cov spores nqa mus rau saum npoo dej zoo li cov nkoj me me.
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