2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
A. Puas yog tshwj xeeb hauv hiav txwv hauv chaw nyob . Tswv yim: Cephalochordates muaj notochord thiab paj qaum paj qaum Lub dorsal hollow paj qaum yog ib tug hollow qaum dorsal rau lub notochord. … Nyob rau hauv vertebrates, lub dorsal paj qaum yog hloov mus rau hauv lub hauv paus paj hlwb, uas muaj lub hlwb thiab qaum qaum. Dorsal txhais tau hais tias "rov qab" sab, tsis zoo li lub ventral uas yog "plab" sab ntawm lub cev. https://en.wikipedia.org › wiki › Dorsal_nerve_cord
Dorsal paj qaum - Wikipedia
tam sim no thoob plaws lub neej raws tag nrho lub cev ntev. …
Puas yog invertebrate chordates tshwj xeeb hauv marine?
yam ntxwv thiab kev faib tawm ntawm Nonvertebrate Chordates. … Cov hom nonvertebrate nyob rau hauv phylum Chordata (nonvertebrate chordates) yog tshwj xeeb tshaj yog marine kab mob. Lawv suav nrog tunicates thiab lancelets ntawm subphyla Urochordata thiab Cephalochordata feem.
Puas yog amphioxus yog Marine?
amphioxus, plural amphioxi, lossis amphioxuses, tseem hu ua lancelet, ib qho ntawm cov tswv cuab ntawm cov invertebrate subphylum Cephalochordata ntawm phylum Chordata. Amphioxi yog cov tsiaj me me hauv hiav txwv pom dav hauv cov dej hiav txwv ntug dej ntawm qhov chaw sov ntawm lub ntiaj teb thiab tsis tshua muaj nyob hauv cov dej kub.
Dab tsi yog 2 qhov sib txawv ntawm Urochordates thiab Cephalochordates?
Ob leeg urochordates thiab cephalochordates yoghu ua protochordates. … Qhov sib txawv tseem ceeb ntawm Urochordata thiab Cephalochordata yog uas Urochordata muaj cov notochord txuas ntxiv nyob rau hauv lub taub hau cheeb tsam whereas Cephalochordata muaj cov notochord nyob rau hauv lub posterior cheeb tsam ntawm lub cev.
Dab tsi ua rau Nonvertebrate chordates tshwj xeeb?
yam ntxwv thiab kev faib tawm ntawm Nonvertebrate Chordates. … Cov kab mob no hu ua chordates vim lawv muaj ib tug notochord, ib tug txhav tab sis saj zawg zog pas nrig ntawm cov hlwb uas khiav lub cev ntev. Lub notochord muab kev tiv thaiv tawm tsam cov leeg twg tuaj yeem cog lus, cia lub cev khoov.
Pom zoo:
Puas yog phagocytes tshwj xeeb lossis tsis tshwj xeeb?
Enzymes pom hauv lub cell ces zom cov kab mob txhawm rau txhawm rau rhuav tshem nws. Raws li phagocytes ua li no rau tag nrho cov kab mob uas lawv ntsib, lawv hu ua tsis tshwj xeeb. Puas yog phagocytes ib feem ntawm cov tshuaj tiv thaiv kab mob tshwj xeeb lossis tsis tshwj xeeb?
Puas yog meristems tshwj xeeb lossis tsis tshwj xeeb?
Meristems yog thaj chaw ntawm cov hlwb tsis tshwj xeeb hauv cov nroj tsuag uas muaj peev xwm faib cov cell. Meristems ua rau cov hlwb tsis tshwj xeeb uas muaj peev xwm dhau los ua ib hom cell tshwj xeeb. Puas yog cov ntaub so ntswg meristematic tshwj xeeb?
Puas yog tshwj xeeb thiab tshwj xeeb?
Raws li lub npe qhov txawv ntawm kev tshwj xeeb thiab kev tshwj xeeb. yog tias kev tshwj xeeb yog thaum tshwj xeeb yog txheej txheem tshwj xeeb. Qhov twg yog Qhov Tshwj Xeeb lossis Tshwj Xeeb? "Specialisation" thiab "
Vim li cas sargasso hiav txwv yog hiav txwv?
Lub Sargasso Hiav Txwv yog ib thaj av loj ntawm dej hiav txwv muaj npe rau cov genus ntawm cov seaweed dawb-floating hu ua Sargassum. … Sargassum muab ib lub tsev rau ib tug amazing ntau yam ntawm marine hom. Cov vaub kib siv cov sargassum mats ua chaw zov me nyuam uas cov hatchlings muaj zaub mov thiab chaw nyob.
Puas yog hiav txwv hiav txwv muaj kev puas tsuaj?
Tus hiav txwv hiav txwv yog ib hom tsiaj hauv hiav txwv nyob rau ntawm ntug dej hiav txwv ntawm sab qaum teb thiab sab hnub tuaj North Pacific Dej hiav txwv. Cov neeg laus hauv hiav txwv feem ntau hnyav ntawm 14 txog 45 kg, ua rau lawv hnyav tshaj plaws ntawm tsev neeg weasel, tab sis ntawm cov tsiaj me me tshaj plaws.
