2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Npaj yog cephalized heev; lawv yog thawj tug tsiaj uas peb saib nyob rau hauv lub lab uas tiag tiag tig rov qab. Cephalization yog ib tug yam ntxwv ntawm tag nrho cov bilaterally symmetrical tsiaj. … Flatworms, nematodes thiab rotifers yog protostomes, thawj qhov qhib nyob rau hauv lub pob ntawm embryonic hlwb ua lub qhov ncauj.
Dab tsi Phylums muaj cephalization?
Cov tswv cuab ntawm Phylum Platyhelminthes (tshwj xeeb yog cov neeg npaj, Chav Turbellaria) muaj lub hlwb thiab lub siab lub cev nyob rau hauv pem hauv ntej ntawm tus tsiaj. Qhov no yog hu ua cephalization. Lub cev nqaij daim tawv yog thawj zaug ua rau kev sib cuag nrog ib puag ncig hauv cov tsiaj txhu cephalized.
Puas hnub qub hiav txwv cephalized?
Echinoderms, lossis hiav txwv hnub qub, kuj lack cephalization. Yuav luag tag nrho cov tsiaj tsis poob rau hauv ib qho ntawm cov pawg no nthuav tawm qee qhov kev cephalization.
Yuav tsiaj twg muaj cephalization?
Peb pawg tsiaj ua kom pom qhov siab ntawm cephalization: vertebrates, arthropods, thiab cephalopod mollusks. Piv txwv ntawm vertebrates muaj xws li tib neeg, nab, thiab noog. Piv txwv ntawm arthropods muaj xws li lobsters, ntsaum, thiab kab laug sab. Piv txwv ntawm cephalopods muaj xws li octopuses, squid, thiab cuttlefish.
Pob kab mob npaws muaj cephalization?
Sib piv thiab sib piv cov phiaj xwm lub cev ntawm flatworms nrog roundworms. Zoo sib xws: Ob leeg muaj peb txheej kab mob thiab ob sab symmetry. Lawv ob leeg muaj anterior thiab posterior xaus cia cephalization tshwm sim. … Covroundworm muaj lub cev kab noj hniav hu ua coelom.
Pom zoo:
Koj puas tau tshaj tawm cov ntsiab lus-ntau yam hauv kev nkag-tswj- nthuav tawm-headers header?
Yog tias koj siv CORS, koj puas tau tshaj tawm Cov Ntsiab Lus-Range hauv Access-Control-Expose-Headers header? yog, tab sis cov lus teb zoo tshaj plaws yog daws nws hauv cov lus teb. Access-Control nthuav tawm cov headers ua dab tsi? Tus Access-Control-Expose-Headers teb header tso cai rau tus neeg rau zaub mov los qhia tias cov lus teb yuav tsum tau ua rau cov ntawv sau ua haujlwm hauv browser, teb rau qhov kev thov hla teb chaws.
Puas yog nthuav tawm lossis nthuav tawm?
Yog koj hais tias ib tug neeg tab tom nthuav tawm, koj tab tom thuam lawv rau kev sim ua kom neeg nyiam los ntawm kev qhia pom tseeb tias lawv ua tau lossis yam lawv muaj. Yog tias koj nthuav tawm ib yam dab tsi uas koj muaj, koj qhia rau ntau tus neeg lossis ua kom pom tseeb tias koj muaj nws, vim koj txaus siab rau nws.
Puas Planaria nthuav tawm cephalization?
Planarian yog tus tsiaj yooj yim tshaj plaws uas muaj lub cev npaj ntawm bilateral symmetry thiab cephalization . Lub hlwb ntawm cov dawb-nyob flatworms flatworms Cov helminths yog invertebrates characterized by elongated, ca los yog round lub cev.
Leej twg cov tswv yim tau nthuav tawm hauv kev tshaj tawm kev ywj pheej?
Thomas Jefferson siv cov kev xav ua ntej sau los ntawm John Locke thaum sau Daim Ntawv Tshaj Tawm ntawm Kev ywj pheej. Lo lus "lub neej, kev ywj pheej, thiab nrhiav kev zoo siab," yog ib lub tswv yim thawj zaug uas Locke nyob rau hauv nws ob Treatises ntawm tsoom fwv.
Qhov twg yog nthuav lossis nthuav tawm?
Expound txhais tau tias "piav qhia meej." Expand txhais tau tias "piav qhia ntau dua." Yog li thaum expound tsis qhia meej meej, nthuav dav yog sib piv. Txhua yam koj tuaj yeem qhia tau tseeb thaum tus neeg A hais tias tus neeg B tau "
