Vertebrates muaj ib lub cev pob txha nrog ib sab qaum los yog qaum. Invertebrates tsis muaj pob txha, thaum vertebrates muaj ib tug zoo-tsim sab hauv pob txha pob txha pob txha thiab pob txha thiab lub hlwb tsim heev uas nyob rau hauv lub pob txha taub hau. … Vim tsis muaj kev txhawb nqa, feem ntau ntawm cov pob txha txha caj qaum yog me.
Dab tsi yog qhov txawv ntawm cov vertebrates thiab invertebrates Brainpop?
Qhov sib txawv tseem ceeb ntawm vertebrates thiab invertebrates yog invertebrates, zoo li kab thiab flatworms, tsis muaj ib tug txha nraub qaum los yog txha caj qaum. Piv txwv ntawm cov vertebrates muaj xws li tib neeg, noog, thiab nab.
Dab tsi yog qhov txawv ntawm vertebrate thiab invertebrate chordates?
Vertebrates yog tag nrho cov chordates uas muaj lub nraub qaum. Lwm ob subphyla yog invertebrate chordates uas tsis muaj pob txha.
Dab tsi yog qhov txawv ntawm notochord thiab vertebral kem?
Qhov sib txawv tseem ceeb ntawm qhov tsis sib xws ntawm cov kab ke thiab cov kab vertebral yog notochord yog cov qauv zoo li tus pas nrig uas txhawb nqa cov ntaub so ntswg hauv qis chordates, thaum lub vertebral kem yog cov qauv uas muaj 33 vertebrae, khiav ntawm lub pob txha taub hau mus rau lub pelvis nyob rau hauv vertebrate siab chordate tsiaj.
Dab tsi yog pawg sib txawv ntawm vertebrates thiab invertebrates?
Cov pab pawg no tau muab faib ua 'pab pawg' me me. Sponges, corals, worms, kab, kab laug sab thiab crabsyog tag nrho cov sub-pab pawg ntawm pawg invertebrate - lawv tsis muaj lub nraub qaum. Ntses, cov tsiaj reptiles, noog, amphibians thiab cov tsiaj nyeg yog cov pab pawg sib txawv ntawm cov vertebrates - lawv txhua tus muaj cov pob txha sab hauv thiab nraub qaum.
