Qhov sib txawv tseem ceeb ntawm lancelets thiab tunicates yog tias Lancelets koom nrog subphylum Cephalochordata thaum Tunicates koom nrog subphylum Urochordata.
Lancelets thiab Tunicates yog cov kab mob hauv hiav txwv uas muaj nyob hauv phylum Chordata. Lawv muaj lawv cov evolutionary thiab cov qauv sib txawv, uas muab faib ua ob subphyla. Txawm li cas los xij, ob qho tib si sawv cev rau daim ntawv tseem ceeb ntawm chordates.
Lancelets yog dab tsi?
Lancelets yog chordates. Lawv yog cov phylum Chordata thiab subphylum Cephalochordata. Lawv yog cov me me hniav zoo li marine kab mob. Lub anatomical qauv ntawm lancelets yog xws li hais tias lawv muaj ib tug me ntsis o ntawm lub anterior kawg ntawm lawv dorsal paj qaum. Tsis tas li ntawd, lawv tsis muaj lub paj hlwb tsim tag nrho. Yog li, cov kws tshawb fawb pom zoo tias cov hlab ntsha qaum yog thawj daim ntawv ntawm lub hlwb tsim nyob rau hauv siab chordates.
Lub cheeb tsam anterior ntawm lancelet yog elongated nyob rau hauv cov duab. Nws muaj cov qauv hauv nruab nrog cev xws li lub plawv thiab lub plab zom mov. Lawv nthuav tawm lawv anterior kawg kom lim pub lawv tus kheej. Lawv feem ntau pub rau planktons.
Daim duab 01: Lancelet
Kev tsim tawm ntawm lancelets tshwm sim sab nraud los ntawm fecundation. Lawv yug me nyuam raws caij nyoog. Yog li ntawd, lawv hu ua gonochoric tsiaj. Lub caij spawning txawv ntawm ntau hom lancelets.
Tunicates yog dab tsi?
Tunicates yog lwm pab pawg chordates. Tab sis, lawv muaj nyob rau hauv phylum Chordata thiab subphylum Urochordata. Lawv yog tag nrho cov kab mob marine. Tsis tas li ntawd, lawv yog cov sessile thiab muaj feem xyuam nrog hagfish thiab lub puab tsaig vertebrates. Qhov tseeb, lawv sawv cev rau cov ntaub ntawv ntxov tshaj plaws ntawm chordates.
Ntxiv mus, lawv yog cov lim dej thiab muaj cov tubular qhib lub npe hu ua siphons kom yooj yim txav hauv dej thiab ua pa. Tsis tas li ntawd, lawv muaj ib tug notochord thaum lawv larval theem. Txawm li cas los xij, lawv tsis muaj nws nyob rau hauv lawv cov neeg laus. Lawv nyob ib puag ncig los ntawm ib txheej txheej txheej hu ua tunic. Lub tunic tsim cov carbohydrates thiab cov protein. Ntxiv mus, nws kuj ua raws li exoskeleton rau tunicates.
Daim duab 02: Tunicates
Tsis tas li ntawd, tunicates muaj cov kab ke tsim kho nrog lub plawv tsim tiav. Txawm li cas los xij, lawv tsis muaj qhov tsim tawm excretory vim lawv tsis muaj lub raum tsim. Lawv tsis muaj lub hlwb tab sis muaj lub paj hlwb ganglion uas koom nrog kev sib koom tes ntawm cov hlab ntsha. Tsis tas li ntawd, lawv yog hermaphrodites thiab qhia cov theem tseem ceeb larval thaum lawv lub neej voj voog.
Dab tsi yog qhov zoo sib xws ntawm Lancelets thiab Tunicates?
- Lancelets thiab tunicates belongs rau phylum Chordata.
- ob leeg yog cov kab mob hauv hiav txwv.
- Lawv muaj cov kab mob ua pa thiab cov hlab ntsha.
- Ntxiv mus, lawv muaj cov hlab ntsha tab sis tsis muaj lub hlwb.
- Ob leeg qhia larval theem.
Qhov txawv ntawm Lancelets thiab Tunicates yog dab tsi?
Lancelets thiab tunicates feem ntau txawv raws li lawv cov subphyla. Qhov ntawd yog; lancelets yog nyob rau subphylum cephalochordate thaum tunicates yog subphylum Urochordates. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm lancelets thiab tunicates. Ntxiv mus, lawv kuj txawv raws li lub xub ntiag ntawm tunic. Lub tunic yog yam ntxwv tsuas yog tunicates. Yog li ntawd, qhov no kuj yog qhov sib txawv tseem ceeb ntawm lancelets thiab tunicates.
Tsis tas li ntawd, tunicates yog sessile thaum lancelets tsis yog. Yog li, qhov no kuj yog qhov txawv ntawm lancelets thiab tunicates.
Summary – Lancelets vs Tunicates
Lancelets thiab tunicates yog thawj chordates. Lawv nyob rau cais subphyla. Hauv qhov no, lancelets suav nrog subphylum Cephalochordata thaum tunicates yog subphylum Urochordata. Lawv tsuas yog marine xwb. Tunicates yog sessile thaum lancelets tsis sessile thiab zoo li ntses. Lawv muaj cov hlab ntsha, tab sis lawv tsis muaj lub hlwb tsim. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm lancelets thiab tunicates.
