Video: Yuav ua li cas cog phyla faib?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yam tsawg kawg yog plaub qhov kev faib ua feem ntau siv: Nroj tsuag tau muab faib ua 12 phyla ua los yog kev faib ua feem ntau ntawm cov yam ntxwv ntawm kev yug me nyuam; Lawv raug cais los ntawm cov ntaub so ntswg mus rau hauv cov hlab ntsha (mosses) thiab vascular nroj tsuag (tag nrho lwm tus); los ntawm "noob" qauv rau hauv cov uas rov tsim dua los ntawm cov noob liab qab, Yog li ntawd, 4 tsob nroj phyla yog dab tsi?
Plantae thiab nws Plaub Phylum. Plantae yog tsim nyob rau hauv plaub phylum: Angiospermorphyta (anthophyta), Coniferophytum , filicinophyta ( pteridophyta kev kho mob ), thiab Bryophyta , los yog flowering nroj tsuag, conifer, fern, thiab moss, feem. Lawv tsim ntau tshaj 250,000 hom, thiab yog qhov thib ob loj rau Athropoda.
Ib sab saum toj no, muaj pes tsawg cov nroj tsuag phyla muaj? Yim
Nyob rau hauv no hais txog, dab tsi ob phyla yog cov nroj tsuag muab faib ua?
10 Kev Sib Cais Sib Cais Av cov nroj tsuag, nyob rau hauv lem, yog pawg ua tsis raws cai rau cov nroj tsuag uas tsis muaj vascular thiab vascular. Yav dhau los, cov no tsuas yog ob qho kev faib (cov nroj tsuag sib npaug ntawm cov tsiaj phyla) hauv lub nceeg vaj cog: Bryophyta ("moss nroj tsuag") thiab Tracheophyta ("tube nroj tsuag").
Kev faib cov nroj tsuag yog dab tsi?
Lub ntsiab Kev faib ntawm av nroj tsuag Nyob rau hauv qhov kev txiav txim nyob rau hauv uas lawv tej zaum yuav evolved, yog lub Marchantiophyta (liverworts), Anthocerotophyta (hornworts), Bryophyta (mosses), Filicophyta (ferns), Sphenophyta (horsetails), Cycadophyta (cycads), Ginkgophyta (ginkgo) s (Pinophyta) conifers), Gnetophyta (gnetophytes), thiab cov
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Yuav ua li cas yog daim ntawv cog lus sib txawv ntawm daim ntawv cog lus ionic?
Qhov sib txawv ntawm cov ionic thiab covalent daim ntawv cog lus yog tias covalent daim ntawv cog lus yog tsim thaum ob lub atoms sib koom electrons. Ionic bonds yog lub zog uas tuav ua ke electrostatic zog ntawm kev nyiam ntawm cov ions oppositely them. Ionic bonds muaj qhov sib txawv electronegativity ntau dua lossis sib npaug li 2
Muaj pes tsawg tus electrons raug muab faib rau hauv ob daim ntawv cog lus?
Hauv daim ntawv cog lus covalent ib khub ntawm electrons tau sib koom ntawm ob lub atoms 'txuas' los ntawm covalent daim ntawv cog lus. Yog li ib daim ntawv cog lus doublecovalent muaj ob khub ntawm electrons raug muab sib koom, yog li tag nrho plaub electrons
Kev faib cov lej zoo li faib cov lej li cas?
Tsuas yog muab cov txiaj ntsig zoo thiab ua rau cov lus teb tsis zoo. Thaum koj faib ob tus lej nrog tib lub cim, qhov tshwm sim yeej ib txwm zoo. Tsuas yog faib qhov tseem ceeb thiab ua kom cov lus teb zoo. Thaum koj faib ob tus lej nrog cov cim sib txawv, qhov tshwm sim ib txwm tsis zoo
Puas yog Per txhais tau tias kev sib faib lossis faib?
Multiplication-product, multiply, multiplied by, sij hawm. Division-quotient, dividend, faib, faib los ntawm, txhua, ib, nruab nrab, faib sib npaug. Sib npaug-zoo ib yam, sib npaug, tib yam li, sib npaug, sib npaug. * Nco ntsoov cov lus no thaum ua haujlwm ntawm lo lus teeb meem los pab teeb tsa. teeb meem