Cnidaria thiab Ctenophora yog ob hom phyla tsim los ntawm coelenterates. … Cnidarians nthuav tawm radial symmetry thaum ctenophores nthuav tawm biradial symmetry. Ob leeg muaj tentacles, ncig lawv lub qhov ncauj. Qhov sib txawv tseem ceeb ntawm cnidarians thiab ctenophores yog lawv lub cev symmetry.
Qhov txawv ntawm Coelenterata thiab Ctenophora yog dab tsi?
Coelenterata muaj ob lub subphyla uas yog cnidaria thiab Ctenophora. Lawv yog cov kab mob hauv dej. Cnidaria yog ib pawg neeg sib txawv heev, uas yog qhov txawv txav hu ua cnidocytes. Ctenophora yog ib pawg tsawg dua, uas muaj comb daim hlau.
Puas Ctenophora yog symmetry?
Ctenophores tsis muaj radial lossis ob sab sib npaug, lawv muaj qhov sib npaug. Tsis muaj lub dav hlau uas faib lawv mus rau hauv daim iav duab, xws li cov tsiaj uas muaj ob sab lossis radial symmetry.
Vim li cas ctenophores tsis nyob hauv cnidarian phylum lawm?
Tsis zoo li cnidarians, uas lawv sib koom ntau qhov zoo sib xws, lawv tsis muaj kab mob. Hloov chaw, txhawm rau txhawm rau ntes cov tsiaj, ctenophores muaj cov nplaum nplaum hu ua colloblasts. Hauv ob peb hom, tshwj xeeb cilia hauv lub qhov ncauj yog siv rau tom gelatinous prey.
Dab tsi yog qhov sib txawv ntawm jellyfish thiab ctenophores?
Ctenophores kuj txawv ntawm jellyfish nyob rau hauv uas lawv tsis tas yuav muaj tentacles; thiab thaum lawv ua, cov no tsis nyob ntawm qhov kawg ntawm lub cev,tab sis tau hauv paus rau nws qhov chaw.
