Ib lub paj yog ib qho amazing tshaj plaws creation ntawm xwm. Thiab los ntawm kev xav txog kev lom neeg, lub cev no ua haujlwm tseem ceeb tshaj plaws - nws muab kev tsim tawm ntawm cov nroj tsuag. Los ntawm peb tsab xov xwm koj yuav kawm txog nws cov qauv, ntau haiv neeg thiab cov qauv ntawm ib qho yooj yim perianth.
Dab tsi yog cov kab mob generative
Paj yog hloov tua, uas txwv kev loj hlob thiab luv luv. Nws qhov tseem ceeb yog plaub. Cov no yog cov pedicel, receptacle, stamens thiab pistils. Thawj ob ntu yog hu ua sterile. Qhov no txhais tau hais tias lawv tsis koom nrog cov txheej txheem ntawm kev sib deev ntawm cov nroj tsuag. Pistil thiab stamens yog qhov chaw fertile. Lawv muaj cov cell sib deev. Raws li qhov tshwm sim ntawm pollination thiab fertilization, ib lub noob yog tsim, uas yog nyob rau hauv cov txiv hmab txiv ntoo. Qhov no yog li cas kev sib deev kev sib deev tshwm sim nyob rau hauv flowering nroj tsuag. Yog li ntawd, lub generative lub cev muaj xws li paj, noob, thiab txiv hmab txiv ntoo. Lawv lub xub ntiag tsuas yog rau cov neeg sawv cev ntawm Angiosperms department.
Vim lub paj yog kev hloov kho, nws muaj txhua qhov chaw uas muaj nyob hauv cov av saum toj no ntawm cov nroj tsuag. Yog li, pedicel yog ib qho internode. Ntawm nws lawv tuaj yeemnplooj ntawv nyob, uas yog hu ua bracts. Nyob rau hauv qhov xwm txheej, sessile paj feem ntau pom. Lawv txuas ncaj qha mus rau qia.
Qhov txuas ntxiv ntawm pedicel yog lub txais. Nws tuaj yeem yog tiaj, concave lossis convex. Hauv cov nroj tsuag uas pollinated los ntawm cua, paj feem ntau yog dioecious. Qhov no txhais tau tias lawv muaj stamens los yog pistils. Cov paj zoo li no muaj cov corolla underdeveloped, thiab nyob rau hauv qee kis yog deprived ntawm nws. Qhov no ua rau cov txheej txheem cua pollination zoo dua. Yog tias cov paj dioecious nyob ntawm ib tus neeg, cov nroj tsuag hu ua monoecious. Cov no muaj xws li ntoo qhib, birch, alder, aspen, sedge. Hauv cov nroj tsuag dioecious, tib-poj niam txiv paj paj yog nyob ntawm cov tib neeg sib txawv. Cov no yog willow, poplar, hiav txwv buckthorn, aspen, sorrel.
qauv ntawm perianth
Cia peb xav txog cov qauv ntawm cov nroj tsuag tsis muaj menyuam. Qhov no yog ib tug perianth - yooj yim thiab ob. Nws muaj ib tug whisk thiab ib khob. Cov qauv no hu ua ob, lossis heterochlamyd. Nws lub xub ntiag yog ib tug systematic feature. Tag nrho cov nroj tsuag ntawm chav kawm Dicotyledonous muaj ob lub perianth. Piv txwv li, peas, txiv apples, eggplant, aster, sunflower. Hauv qhov xwm txheej, feem ntau ntawm cov nroj tsuag no.
Cov ntsiab lus ntawm ib qho yooj yim los yog homochlamydous perianth muaj xws li ib tug corolla los yog calyx. Nws yog tus yam ntxwv ntawm cov nroj tsuag monocot. Nws suav nrog tsev neeg ntawm Dos, Liliaceae, Cereals thiab lwm yam.
Nov yog qhov ci ntsa iab ntawm perianth. Cov khoom sau yog hu ua corolla.paj ntaub. Nws loj dua ib khob. Lub nplawm yog pleev xim rau hauv cov xim sib txawv. Ci petals yog tsim nyog rau cov nroj tsuag kom nyiam kab. Nyob rau hauv cua-pollinated hom, lub corolla yog inconspicuous los yog txo.
Cov duab ntawm corolla kuj muaj ntau haiv neeg. Piv txwv li, nyob rau hauv legumes, petals yog txawv morphologically. Sab saum toj yog qhov loj tshaj plaws. Muaj ob lub paj dawb ntawm ob sab, thiab sab qis yog ib feem fused. Outwardly, lawv zoo li ib tug sail, lub nkoj thiab oars, los yog ib tug npauj npaim uas tau folded nws tis. Yog li ntawd, tsev neeg legume kuj hu ua Moth.
Nyob hauv cov nroj tsuag hmo ntuj, tag nrho cov kab paj sib txuas ua ke, tsim ib lub raj nrog caj pas. Nws xaus nrog cov hniav dawb. Tus naj npawb thiab cov duab ntawm cov petals kuj yog ib qho systematic feature. Yog li, cov neeg sawv cev ntawm tsev neeg Rosaceae muaj tsib ntawm lawv, Cruciferous - plaub. Thiab nyob rau hauv Astrovs, inflorescence muaj txog li ib thiab ib nrab txhiab me me petals.
khob
Lwm qhov ntawm perianth yog txheej sepals. Lawv lub luag haujlwm tseem ceeb yog kev tiv thaiv. Nws yog nqa tawm thaum lub sij hawm tsim ntawm buds. Thaum lub sij hawm no, lub sepals kiag li npog lub paj. Hauv cov nroj tsuag neeg laus, calyx yog qhov photosynthetic. Nrog rau nplooj, nws tseem muab cov nroj tsuag nrog cov organic teeb meem.
Sepals muaj cov ntaub so ntswg tseem ceeb - parenchyma, nyob rau hauv cov vascular bundles. Sab nraud yog cov ntaub so ntswg integumentary - lub epidermis. Cov sepals yog xim ntsuab. Ua derivatives ntawm bracts, cov duab yooj yim thiab me me,outwardly, lawv zoo li vegetative ones.
Raws li cov yam ntxwv ntawm cov qauv, qhov sib cais thiab sib koom ua ke-tawm calyx yog qhov txawv. Hauv thawj kis, cov sepals txuas nrog dawb thiab nyob ntawm qhov deb ntawm ib leeg. Haus luam yeeb thiab nightshade muaj nplooj calyx. Nws cov khoom yog lub raj, cov hniav thiab cov lobes, tus naj npawb ntawm cov sib npaug ntawm cov sepals. Cov khob ntawm hom no tuaj yeem yog funnel-puab, tswb-puab lossis tubular. Hauv sage thiab skullcap, qhov no ntawm lub perianth muaj ob qhov tsis sib xws. Hauv qhov no, nws yog hu ua ob daim di ncauj. Sepals ntawm mallow thiab strawberry tsim ob lub voj voog. Qhov no feature muab kev tiv thaiv ntxiv thaum lub sij hawm tsim bud.
Nyob hauv qee cov nroj tsuag, cov sepals poob los yog quav rov qab thaum lub paj tawg paj. Thiab hauv cov neeg sawv cev ntawm qee tsev neeg, lawv raug hloov kho. Hauv qhov no, lub khob ua haujlwm ntxiv - nws kis tau cov noob. Piv txwv li, nyob rau hauv yasnotkovye nws hloov mus rau hauv ib lub thawv, thiab nyob rau hauv aster - mus rau hauv ib tug crest.
Tsis tas lub khob ntsuab. Piv txwv ntawm cov nroj tsuag no yog larkspur thiab hellebore. Lawv corolla txo qis heev. Yog li ntawd, nws muaj nuj nqi yog ua los ntawm ib tug kaj perianth.
Dab tsi yog qhov yooj yim perianth hauv biology
Lub ntsiab tseem ceeb hauv qab kev faib tawm ntawm cov paj no yog qhov muaj ob qhov tseem ceeb - corolla thiab calyx. Nyob ntawm qhov no, ib tug complex thiab yooj yim perianth yog txawv. Hauv thawj kis, nws yog sawv cev los ntawm ob lub paj thiab sepals. Feem ntau, cov qauvyooj yim perianth tsuas yog sawv cev los ntawm corolla. Cia peb xav txog nws cov qauv siv cov piv txwv tshwj xeeb.
Puas paj muaj ib qho yooj yim perianth
Tus qauv thiab tus naj npawb ntawm cov paj yog qhov tseem ceeb ntawm kev ua haujlwm. Yog li, ib qho yooj yim perianth yog ib tug yam ntxwv feature ntawm chav kawm Monocots. Ib qho piv txwv zoo ntawm cov nroj tsuag no yog tulip thiab lily. Lawv cov perianth yooj yim tsis muaj dab tsi ntau tshaj li qhov loj thiab ci corolla. Xws li paj yooj yim nyiam cov xim ntawm kab. Qhov no kuj tseem txhawb nqa los ntawm qhov qab ntxiag aroma ntawm paj. Qhov tseeb yog tias cov ntaub so ntswg integumentary ntawm cov paj, uas yog hu ua epidermis, muaj cov roj yam tseem ceeb.
Yog li, hauv peb tsab xov xwm peb tau paub txog lub tswv yim zoo li qhov yooj yim thiab ob qho tib si perianth. Hauv thawj kis, cov qauv no muaj cov calyx lossis corolla. Paj nrog ib tug complex perianth muaj ob qho tib si ntawm cov khoom tsim.
