Qhov Tseem Ceeb - Homosporous vs Heterosporous Pteridophytes
Pteridophyta yog qhov loj tshaj plaws phylum ntawm lub nceeg vaj Plantae. Lawv yog qhov thib ob ntau hom av nroj tsuag tom qab angiosperms. Lawv yog ib hom vascular nroj tsuag uas muaj xylem thiab phloem cov ntaub so ntswg. Pteridophytes kev loj hlob feem ntau tshwm sim los ntawm spores. Lawv tsis tsim noob. Nyob ntawm seb hom thiab qhov loj ntawm cov spores, Pteridophytes tuaj yeem yog ob hom; Homosporous lossis Heterosporous. Homosporous pteridophytes tsim tsuas yog ib hom spores uas zoo ib yam thiab tsis tuaj yeem paub qhov txawv ntawm txiv neej lossis poj niam spores. Qhov no spore muaj ob qho tib si txiv neej thiab poj niam. Feem ntau ntawm cov pteridophytes yog homosporous. Heterosporous pteridophytes tsim ob hom spores uas muaj ntau qhov sib txawv, thiab lawv cov txiv neej thiab poj niam spores tuaj yeem paub qhov txawv. Yog li ntawd, qhov sib txawv tseem ceeb ntawm homosporous thiab heterosporous pteridophytes yog tias homosporous pteridophytes tsim ib hom spores uas zoo ib yam loj thaum heterosporous pteridophytes tsim ob hom spores uas txawv qhov ntau thiab tsawg.
Homosporous Pteridophytes yog dab tsi?
Homosporous pteridophytes yog cov nroj tsuag vascular uas tsim tsuas yog ib hom spores uas loj tib yam. Feem ntau ntawm cov pteridophytes yog homosporous. Cov spores tsis tuaj yeem sib txawv li txiv neej lossis poj niam hauv homosporous pteridophytes. Cov nroj tsuag no tsim ib hom sporangium bearing spores. Spore muaj ob tus txiv neej thiab poj niam.
Daim duab 01: Homosporous Pteridophyte – Equisetum
Li no, cov kab mob tshwm sim hauv monoecious gametophyte uas dais txiv neej thiab poj niam qhov chaw (antheridia thiab archegonia feem) hauv tib tsob nroj. Qee qhov piv txwv rau homosporous pteridophytes yog Lycopodium, Equisetum, thiab lwm yam.
Heterosporous Pteridophytes yog dab tsi?
Heterosporous pteridophytes yog ferns uas tsim ob hom spores uas txawv ntawm qhov loj lossis morphology. Ob hom spores no hu ua microspores thiab megaspores (txiv neej thiab poj niam spores feem). Microspores me me thaum megaspores loj dua. Microspores yog embedded nyob rau hauv microsporangia, thiab lawv loj hlob mus rau hauv txiv neej gametes. Megaspores yog embedded nyob rau hauv megasporangia thiab loj hlob mus rau hauv poj niam gametes. Microspores muaj ntau tus lej thaum megaspores tsawg dua.
Daim duab 02: Heterosporous Pteridophyte – Selaginella
Kev loj hlob ntawm poj niam gametophyte los ntawm megaspores pib thaum megaspores nyob hauv megasporangium. Megaspore tsim cov poj niam gametophyte uas dais archegonia. Kev loj hlob ntawm tus txiv neej gametophyte zoo ib yam li poj niam gametophyte. Microspore tsim cov txiv neej gametophyte uas dais antheridia. Lub resulting nroj tsuag yog dioecious vim lub heterosporous xwm ntawm cov nroj tsuag. Cov gametophytes nyob ntawm cov sporophytes rau kev noj haus. Yog li ntawd, tiam sporophytic yog tiam tseem ceeb hauv heterosporous pteridophytes. Piv txwv ntawm heterosporous pteridophytes yog Selaginella, Marselia thiab lwm yam.
Dab tsi yog qhov zoo sib xws ntawm Homosporous thiab Heterosporous Pteridophytes?
- Ob leeg muaj lub cim tseem ceeb sporophytic tiam.
- Ob hom kev loj hlob mus rau gametophytes.
- Hauv ob hom, gametophyte tau txais cov khoom noj los ntawm sporophyte.
Qhov txawv ntawm Homosporous thiab Heterosporous Pteridophytes yog dab tsi?
Homosporous Pteridophytes vs Heterosporous Pteridophytes |
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| Homosporous pteridophytes yog cov nroj tsuag vascular uas tsim ib hom kab mob xwb. Cov kab no muaj ob qho tib si txiv neej thiab poj niam. | Heterosporous pteridophytes yog cov nroj tsuag vascular uas tsim ob hom spores, thiab yog li cov txiv neej thiab poj niam tuaj yeem paub qhov txawv. |
| Txhua tus spores yog qhov loj tib yam hauv homosporous pteridophytes. | Cov spores muaj ntau qhov sib txawv - Microspores me dua qhov loj dua qhov megaspores loj dua. |
| Gametophyte | |
| Homosporous pteridophytes tsim tsuas yog ib hom gametophyte uas muaj ob qho tib si txiv neej thiab poj niam. Yog li gametophyte yog monoecious. | Tsim tawm ob hom gametophytes: txiv neej gametophytes (microspores) thiab poj niam gametophyte (megaspores). Yog li gametophyte yog dioecious. |
| Piv txwv | |
| Lycopodium, Equisetum. | Selaginella, Marselia. |
Summary – Homosporous vs Heterosporous Pteridophytes
Pteridophytes lossis ferns yog nyob rau hauv chav kawm ntawm cov nroj tsuag vascular. Nyob ntawm lub neej voj voog ntawm pteridophytes, nws tuaj yeem hloov pauv ntawm tiam raws li homospory lossis heterospory. Homospory yog ib qho tshwm sim uas tsuas yog ib hom spores tuaj yeem pom. Cov ferns no hu ua Homosporous Pteridophytes. Heterospory yog qhov xwm txheej uas cov nroj tsuag muaj peev xwm tsim tau ob hom spores. Xws li pteridophytes raug xa mus rau Heterosporous Pteridophytes. Spores muaj nyob rau hauv sporangia. Tom qab ntawd lawv tau tsim los ua gametophytes. Homosporous pteridophytes tsim ib hom gametophyte bearing ob leeg txiv neej thiab poj niam gametes. Heterosporous pteridophytes tsim ob hom gametophytes; txiv neej thiab poj niam gametophytes bearing txiv neej thiab poj niam gametes cais. Qhov no yog qhov txawv ntawm homosporous thiab heterosporous pteridophytes.
Download the PDF Homosporous vs Heterosporous Pteridophytes
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline lub hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Homosporous thiab Heterosporous Pteridophytes
