Qhov sib txawv tseem ceeb ntawm homospory thiab heterospory yog homospory yog kev tsim cov spores ntawm tib qhov loj thiab tib hom, thaum heterospory yog tsim cov spores ntawm ob qhov sib txawv thiab txawv poj niam txiv neej.
Nroj tsuag tsim kev sib deev thiab asexual spores thiaj li tsim tau kev sib deev thiab asexually, feem. Homospory thiab heterospory yog ob qhov tshwm sim ntawm kev tsim cov spores. Homospory yog hais txog kev tsim cov morphologically zoo tib yam spores. Hauv qhov sib piv, heterospory hais txog kev tsim cov dimorphic spores ntawm ob qhov ntau thiab tsawg thiab ob hom poj niam txiv neej. Bryophytes thiab feem ntau ntawm pteridophytes tsim tsuas yog ib hom spores, thaum ib co ferns thiab tag nrho cov noob nroj tsuag tsim dimorphic spores. Nws ntseeg tau tias qhov mob heterosporous hauv cov nroj tsuag vascular yog hloov zuj zus los ntawm homosporous mob.
Homospory yog dab tsi?
Homospory yog qhov tsim ntawm qhov loj me, zoo ib yam thiab hom spores. Hauv lwm lo lus, homospory yog hais txog kev tsim cov asexual spores ntawm tib yam. Cov spores no zoo ib yam loj. Lawv yog cov asexual spores. Lawv tsis yog microspores lossis megaspores.
Daim duab 01: Homospory
Homospory yog tus cwj pwm ntawm yuav luag txhua tus bryophytes thiab feem ntau pteridophytes (cov nroj tsuag qis qis). Yog li ntawd, feem ntau cov tsev neeg fern yog homosporous. Nyob rau hauv feem ntau pteridophytes, cov spores germinate thiab tsim bisexual gametophytes. Txawm li cas los xij, hauv qee hom, cov spores tsim cov txiv neej lossis poj niam gametophytes. Nyob rau hauv bryophytes, cov spores tsim unisexual gametophytes. Homosporous nroj tsuag yog gametophyte dominant thiab monosporangiate.
Heterospory yog dab tsi?
Heterospory yog tsim cov spores ntawm ob qhov sib txawv thiab poj niam txiv neej (dimorphic spores). Feem ntau, ob hom spores no hu ua microspores thiab megaspores. Microspores yog txiv neej spores, thaum megaspores yog poj niam spores. Lawv yog tsim los ntawm ob hom sporangia: microsporangia thiab megasporangia.
Daim duab 02: Heterospory
Microsporophylls yog cov nplooj zoo li cov ntoo uas dais microsporangia, thaum megasporophylls yog cov nplooj zoo li cov ntoo uas dais megasporangia. Microspores yog me me thiab ntau heev. Megaspores loj thiab tsawg dua. Microspores germinate thiab tsim txiv neej gametophytes. Megaspores germinate thiab tsim cov poj niam gametophytes. Heterospore ntau lawm yog ib tug cim ntawm ib co pteridophytes thiab tag nrho cov noob nroj tsuag. Heterosporous nroj tsuag yog sporophyte dominant thiab multisporangiate.
Dab tsi zoo sib xws ntawm Homospory thiab Heterospory?
- Homospory thiab heterospory yog ob qhov tshwm sim pom hauv cov nroj tsuag thaum lub sijhawm tsim khoom.
- Heterosporous mob hauv vascular nroj tsuag hloov zuj zus los ntawm homosporous mob.
Qhov txawv ntawm Homospory thiab Heterospory yog dab tsi?
Homospory yog tsim cov spores ntawm tsuas yog ib hom uas yog morphologically zoo tib yam. Heterospory yog tsim los ntawm ob hom spores uas yog morphologically dissimilar. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm homospory thiab heterospory. Ntxiv mus, cov bryophytes thiab feem ntau pteridophytes yog homosporous nroj tsuag, thaum ib co pteridophytes thiab tag nrho cov noob nroj tsuag yog heterosporous nroj tsuag. Tsis tas li ntawd, nyob rau hauv homosporous nroj tsuag, gametophytes yog dominant, thaum nyob rau hauv heterosporous nroj tsuag, sporophytes yog dominant. Yog li, qhov no yog lwm qhov sib txawv tseem ceeb ntawm homospory thiab heterospory. Tsis tas li ntawd, homosporous nroj tsuag yog monosporangiate, thaum heterosporous nroj tsuag yog multisporangiate.
Cov hauv qab no infographic teev ntau qhov sib txawv ntawm homospory thiab heterospory hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Homospory vs Heterospory
Homospory yog tsim los ntawm ib hom spores uas tsis yog microspores lossis megaspores. Heterospory yog tsim los ntawm ob hom spores uas yog microspores thiab megaspores. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm homospory thiab heterospory. Homospores yog qhov sib txawv ntawm qhov loj thiab cov duab, thaum heterospores txawv ntawm qhov loj, duab thiab poj niam txiv neej. Bryophytes thiab feem ntau ntawm pteridophytes tsim homspores, thaum ib co pteridophytes thiab tag nrho cov noob nroj tsuag tsim heterospores.
