Puas tunicates muaj cranium?

Cov txheej txheem:

Puas tunicates muaj cranium?
Puas tunicates muaj cranium?

Video: Puas tunicates muaj cranium?

Video: Puas tunicates muaj cranium?
Video: Qhia Rub Suab Nkauj Tso YouTube Tsis Txhaum Cai 2020 2024, Hlis ntuj nqeg
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Lancelets thiab tunicates tsis muaj lub nraub qaum lossis lub taub hau zoo, tab sis tag nrho cov chordates muaj nyob rau ntawm qee qhov tsis sib xws, cov hlab ntsha hauv qab, cov hnab pharyngeal, thiab tus Tsov tus tw. … Lawv kuj muaj lub taub hau tsim tau zoo tiv thaiv pob txha taub hau Ob leeg no yog ua los ntawm pob txha mos lossis pob txha.

Cov tunicates puas muaj pob txha?

Txawm hais tias tunicates yog invertebrates (tsiaj tsis muaj pob txha) pom nyob rau hauv subphylum Tunicata (qee zaum hu ua Urochordata), lawv yog ib feem ntawm Phylum Chordata, uas kuj suav nrog cov tsiaj txhu, zoo li peb.

Puas tag nrho cov chordates muaj cranium?

Vertebrates qhia plaub tus yam ntxwv ntawm chordates, tab sis lawv muaj npe rau kab vertebral uas tsim los ntawm cov pob txha vertebrae tau koom ua ke ua cov pob txha. Nyob rau hauv cov neeg laus vertebrates, lub vertebral kem hloov lub embryonic notochord. … Tag nrho cov vertebrates yog nyob rau hauv lub Craniata clade thiab muaj ib tug cranium

Puas Cephalochordata puas muaj cranium?

dav dav. Cov lancelets tseem hu ua cephalochordates (Greek: kephale, "lub taub hau") vim hais tias lub notochord txuas los ntawm ze rau ntawm tus Tsov tus tw mus rau hauv lub anterior ntawm lub cev. Vim lawv tsis muaj lub hlwb, lossis cranium, ntawm ib tus txha caj qaum, lancelets feem ntau hu ua acraniates.

Puas invertebrate chordates muaj cranium?

VERTEBRATE CHORDATES

Lawv txawv ntawm cov invertebrate chordates nyob rau hauv muaj: ib tug sab hauv skeleton, nrog rau ib tug vertebral kem uas encloses lub paj qaum; ib b hlwb nyob rau hauv lub pob txha taub hau; lub plawv dhia thiab ntshav khiav zoo.

Pom zoo: