Qhov sib txawv tseem ceeb ntawm operculum thiab peristome yog tias operculum yog lub hau zoo li npog pom hauv qee cov nroj tsuag, mosses thiab fungi thaum peristome yog lub nplhaib ntawm cov hniav zoo li ib ncig ntawm qhov qhib ntawm cov tshuaj mosses.
Mosses yog cov nroj tsuag tsis muaj vascular teej tug mus rau phylum Bryophyta. Lawv yog cov nroj tsuag tsis muaj paj uas tsis muaj cov cag muaj tseeb. Lawv loj hlob nyob rau hauv qhov chaw ntub dej los yog ntxoov ntxoo thiab rov tsim dua los ntawm spores. Mosses tsim spores nyob rau hauv cov tshuaj tiv thaiv kab mob los yog sporangia. Spore-bearing capsule muaj lub hau apical uas hu ua operculum. Nws kuj muaj ib lub nplhaib ntawm cov hniav zoo li appendages nyob ib ncig ntawm lub qhov ncauj ntawm cov tshuaj ntsiav. Qhov no yog hu ua peristome. Ob qho tib si operculum thiab peristome yog cov qauv tseem ceeb ntawm mosses. Thaum lub operculum ntog tawm, peristome raug rau sab nraud.
Operculum yog dab tsi?
Cov operculum yog cov npog lossis cov qauv zoo li lub kaus mom pom nyob hauv mosses. Operculum kaw cov tshuaj tiv thaiv kab mob ntawm mosses. Yog li ntawd, nws yog lub hau apical uas npog lub capsule. Ntxiv mus, operculum muaj nyob rau hauv flowering nroj tsuag thiab nyob rau hauv fungi. Nyob rau hauv flowering nroj tsuag, tsim ntawm operculum tshwm sim los ntawm fusion ntawm sepals los yog petals. Thaum cov txiv hmab txiv ntoo tiav lawm, operculum tshem tawm ntawm cov txiv hmab txiv ntoo.
Daim duab 01: Operculum
Nyob hauv qee cov nroj tsuag, muaj ob lub opercula; ib sab operculum thiab sab hauv operculum. Nyob rau hauv mosses, thaum lub sporangia npaj txhij tso spores, lub operculum ntog tawm thiab cov peristome raug thiab maj mam tso spores rau ib puag ncig. Hauv fungi, opercula muaj nyob rau hauv ascomycete fungi. Lawv muaj operculum nyob rau sab saum toj ntawm txhua ascus.
Peristome yog dab tsi?
Lub peristome yog ib lub nplhaib ntawm cov hniav zoo li appendages nyob ib ncig ntawm qhov qhib ntawm cov tshuaj mosses. Cov hniav zoo li no yog me me thiab taw tes. Peristome hniav feem ntau nyob ib ncig ntawm lub qhov ncauj ntawm sporangium hauv mosses. Nws yog ib tug tshwj xeeb qauv uas yog ib qho tseem ceeb nyob rau hauv maj mam tso spores nyob rau hauv mosses, es tsis txhob tso lawv ib zaug. Yog li, peristome cuam tshuam qhov tso tawm ntawm spores los ntawm sporangia hauv mosses. Hauv cov lus yooj yim, peristome tswj kev tso tawm cov spores rau lub sijhawm ntev.
Daim duab 02: Peristome ntawm Bryum capillare
Peristome cov hniav feem ntau teb rau cov kev hloov me ntsis ntawm cov dej noo thiab pulsate sab hauv thiab sab nraud, nqa cov spores tawm ntawm sporangium. Peristome tuaj yeem pom thaum lub hau tshem tawm. Fungi, qee cov nroj tsuag thiab qee qhov gastropods kuj muaj peristomes.
Dab tsi yog qhov zoo sib xws ntawm Operculum thiab Peristome?
- Operculum thiab peristome yog ob lub qauv pom muaj nyob rau hauv cov tshuaj tiv thaiv kab mob ntawm mosses.
- Peristome tuaj yeem pom thaum lub operculum raug tshem tawm.
- Ob lub qauv feem ntau pom ua ke.
- Qee cov fungi thiab qee cov nroj tsuag kuj muaj opercula thiab peristomes.
Qhov txawv ntawm Operculum thiab Peristome yog dab tsi?
Operculum yog cov qauv zoo li lub kaus mom uas npog cov tshuaj ntsiav lossis cov kab mob ntawm cov nroj tsuag, mosses thiab fungi. Peristome, ntawm qhov tod tes, yog lub nplhaib ntawm cov hniav zoo li appendages uas nyob ib puag ncig ntawm lub qhov ncauj ntawm cov tshuaj ntsiav lossis cov kab mob ntawm cov mosses, cov nroj tsuag paj thiab qee cov fungi. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm operculum thiab peristome. Operculum npog qhov qhib ntawm sporangium los yog capsule thaum peristome tswj qhov maj mam tso tawm ntawm spores los ntawm sporangium.
Hauv qab infographic qhia txog qhov sib txawv ntawm operculum thiab peristome.
Summary – Operculum vs Peristome
Operculum yog lub hau lossis lub hau zoo li cov qauv uas npog qhov qhib ntawm cov tshuaj ntsiav lossis cov kabmob spore-cov kabmob. Nyob rau hauv sib piv, peristome yog ib lub nplhaib ntawm cov hniav zoo li appendages uas nyob ib ncig ntawm lub qhov ncauj ntawm cov tshuaj ntsiav los yog spore-cov kabmob ntawm cov nroj tsuag, mosses thiab fungi. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm operculum thiab peristome. Ob lub qauv feem ntau pom ua ke. Functionally, operculum npog cov sporangia lossis capsules thaum peristome tswj kev tso tawm ntawm spores.
