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Video: Cone hauv biology yog dab tsi?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub khob hliav qab , tseem hu ua strobilus, nyob rau hauv botany, qhov loj ntawm nplai los yog bracts, feem ntau ovate nyob rau hauv cov duab, muaj cov me nyuam plab hnyuv siab raum ntawm tej yam nonflowering nroj tsuag. Cov Lub khob hliav qab , qhov txawv ntawm pines thiab lwm yam conifers, kuj pom muaj nyob rau hauv txhua lub gymnosperms, ntawm qee lub club mosses, thiab ntawm horsetails.
Ib yam li ntawd, nws tau nug, lub khob hliav qab hauv tsob ntoo yog dab tsi?
A Lub khob hliav qab (hauv kev siv botanical: strobilus, plural strobili) yog ib qho khoom nruab nrog nroj tsuag nyob rau hauv lub division Pinophyta (conifers) uas muaj cov qauv kev loj hlob. Qhov paub ntoo Lub khob hliav qab yog poj niam Lub khob hliav qab , uas tsim cov noob.
Ib tus kuj tseem tuaj yeem nug, dab tsi yog noob caj noob ces? A noob yog fertilized ovule uas muaj cov nroj tsuag embryo. Muab qhov tsim nyog kev loj hlob, nws yuav dhau los ua cov nroj tsuag tshiab. Yog li, nws tseem raug suav hais tias yog lub cev tshaj tawm tshwj xeeb ntawm cov spermatophytes (piv txwv li gymnosperms thiab angiosperms). Cov nroj tsuag xws li ferns, mosses, thiab liverworts tsis tsim noob.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog cones nyob rau hauv science?
Lub khob hliav qab : Ib hom tshwj xeeb lub teeb-sensitive cell (photoreceptor) nyob rau hauv lub retina ntawm lub qhov muag uas muab cov xim tsis pom kev thiab lub hauv paus tsis pom kev. Los ntawm qhov sib txawv, cov pas nrig yog cov duab hluav taws xob retinal uas muab lub zeem muag pom thiab muaj peev xwm pom cov khoom hauv qhov pom kev tsis pom kev (hmo ntuj pom kev).
Pine cone puas yog txiv ntoo?
Pine Cones 101 Vim tias gymnosperms tsis paj, lawv tsis tsim ib txiv hmab txiv ntoo raws li lub zes qe menyuam rau lawv cov noob. Lawv Lub khob hliav qab yog ib lub nkoj khov kho rau cov noob loj hlob uas nyob saum cov nplai. Thaum lub Lub khob hliav qab yog paub tab thiab qhuav tawm qhov teev yuav qhib, poob cov noob.
Pom zoo:
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