Cov txheej txheem:
- nyob rau theem twg meiosis tshwm sim hauv pteridium?
- Nyob rau hauv qhov meiosis hauv qab no tshwm sim?
- Lub sijhawm twg meiosis tshwm sim hauv Fern?
- Meiosis nyob qhov twg hauv Fern?
Video: Hauv pteridium meiosis tshwm sim thaum lub sijhawm?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
sporation . organ formation in prothallus. Spore germination.
nyob rau theem twg meiosis tshwm sim hauv pteridium?
sporation . organ formation in prothallus. Spore germination.
Nyob rau hauv qhov meiosis hauv qab no tshwm sim?
Meiosis tsuas yog siv nyob rau hauv cov kab mob sib deev Qee zaum cov haploid gametes raug tsim tawm uas txuas ntxiv rau cov phev haploid nyob ntawm seb hom kab mob. Cov spores uas tsim tawm haploid tau muab faib ntxiv los ntawm mitotic cell division rau kev tsim cov unicellular lossis multicellular kab mob.
Lub sijhawm twg meiosis tshwm sim hauv Fern?
Yog li cov spores tsim muaj haploid nyob rau hauv cov xwm thiab germinate los tsim ib tug prothallus uas sawv cev rau tiam gametophytic. Antheridium thiab archegonium tau yug los ntawm qhov prothallus. Yog li meiosis tshwm sim nyob rau theem ntawm kev tsim cov kab mob.
Meiosis nyob qhov twg hauv Fern?
Meiosis tshwm sim hauv sporangia, nyob rau hauv qab ntawm nplooj sporophyte. Tom qab cov spores tso tawm lawv germinate, faib los ntawm mitosis thiab loj hlob mus rau hauv lub plawv yooj yim gametophytes.
Pom zoo:
Hauv selaginella meiosis tshwm sim thaum lub sijhawm?
Hauv Selaginella, txo kev faib (meiosis) tshwm sim ob qho tib si hauv microspore niam cell thiab megaspore niam cell, uas tsim haploid microspores thiab megaspores, raws li . Puas txo kev faib tshwm sim hauv mitosis? Mitosis tsim 2 lub hlwb diploid.
Lub sijhawm megasporogenesis meiosis tshwm sim hauv?
meiosis ib txwm tshwm sim hauv cov kabmob. Puas meiosis tshwm sim hauv Megasporogenesis? Megasporogenesis yog hais txog kev loj hlob ntawm megaspores los ntawm megasporocyte, lub cell uas nkag mus meiosis. Meiosis ntawm megasporocyte nucleus tshwm sim hauv kev tsim ntawm plaub haploid megaspore nuclei .
Thaum tshwm sim thaum lub sijhawm photosynthesis?
Thaum cov txheej txheem ntawm photosynthesis, cells siv carbon dioxide thiab lub zog los ntawm lub hnub los ua suab thaj molecules thiab oxygen… Lub zog-nplua nuj cov cab kuj molecules, xws li ATP, thiab carbon dioxide yog tsim los ua cov khoom pov tseg .
Lub sijhawm meiosis tsis muaj kev cuam tshuam tuaj yeem tshwm sim hauv?
Nondisjunction tuaj yeem tshwm sim thaum anaphase of mitosis, meiosis I, lossis meiosis II. Thaum lub sij hawm anaphase, tus muam chromatids (los yog homologous chromosomes rau meiosis I), yuav sib cais thiab txav mus rau cov ncej ntawm tes, rub los ntawm microtubules .
Lub sijhawm redox tshwm sim dab tsi tshwm sim?
Dab tsi tshwm sim hauv Oxidation-Reduction (Redox) Reaction? Electrons raug xa los ntawm ib qho reactant mus rau lwm qhov thiab oxidation xeev / oxidation naj npawb oxidation tooj Qhov nce hauv oxidation lub xeev ntawm atom, los ntawm cov tshuaj tiv thaiv, hu ua oxidation;
