Cephalochordates yog sawv cev hauv dej hiav txwv niaj hnub los ntawm Amphioxiformes thiab feem ntau pom muaj nyob hauv huab cua sov thiab dej hiav txwv thoob ntiaj teb.
Puas yog hagfish Cephalochordata?
Raws li tag nrho cov chordates-ib pawg uas suav nrog tunicates (subphylum Urochordata), hagfish (class Agnatha), thiab tag nrho cov vertebrates (chav Vertebrata)-cephalochordates muaj ib tug notochord, a hollow dorsal paj qaum, thiab pharyngeal slits (los yog pharyngeal pouches). …
Nws yog Cephalochordata?
Cephalochordate, tseem hu ua acrania, ib yam ntawm ntau tshaj ob lub kaum hom muaj rau subphylum Cephalochordata ntawm phylum Chordata. Me me, fishlike marine invertebrates, tej zaum lawv yog cov txheeb ze nyob ze tshaj plaws ntawm cov vertebrates. … Lub genus Asymmetron yog qee zaum khaws cia rau qee hom.
Cov piv txwv ntawm cephalochordates yog dab tsi?
3.1 Epithelial Chemoreceptors hauv Chordates. Cov kab mob chordate suav nrog cov cephalochordates invertebrate (piv txwv li, Amphioxus) thiab craniates. Cov craniates tuaj yeem faib ua ob pawg: (1) hagfish thiab lawv cov txheeb ze, thiab (2) vertebrates tseeb, suav nrog ob qho tib si agnathan (lamprey) thiab gnathostome kab.
Qhov txawv ntawm Urochordata thiab Cephalochordata yog dab tsi?
Ob leeg urochordates thiab cephalochordates hu ua protochordates. … Qhov sib txawv tseem ceeb ntawm Urochordata thiab Cephalochordata yog Urochordata muajntawm ib tug notochord ncua nyob rau hauv lub taub hau cheeb tsam whereas Cephalochordata muaj cov notochord nyob rau hauv lub posterior cheeb tsam ntawm lub cev.
