Ob leeg cnidarians thiab ctenophores ctenophores Pleurobrachia bachei yog ib tug tswv cuab ntawm phylum Ctenophora thiab feem ntau hu ua hiav txwv gooseberry. Cov comb jellies no feem ntau yuam kev rau medusoid Cnidaria, tab sis tsis muaj cov kab mob stinging. https://en.wikipedia.org › wiki › Pleurobrachia_bachei
Pleurobrachia bachei - Wikipedia
tam sim no qhia ntau hom kev sib luag hauv cov dav hlau hla ntawm qhov ncauj-aboral axis (Fig. 1). Hauv qee cnidarians, qhov no yuav siv ntau lub dav hlau ntawm daim iav symmetry, li no tus moniker "radial symmetry ".
Puas yog cnidarians radially symmetrical?
Txhua tus cnidarians muaj lub hauv paus ntsiab lus lossis axis, thiab yog tias koj faib tus cnidarian los ntawm lub hauv paus axis, koj yuav xaus nrog qhov sib npaug ntawm ob sab. Txawm hais tias cnidarians sib txawv heev, lawv txhua tus muaj radial symmetryua tus yam ntxwv.
Cov cnidarians puas muaj radial lossis ob tog sib luag?
The bilateral symmetry ntawm Cnidaria tau xav tias yuav tau txais los ntawm cov poj koob yawm txwv ntawm ob qho tib si cnidarians thiab triploblastic bilaterians. Qhov thib ob radial symmetry ntawm Cnidaria pom tau tias yog qhov tshwm sim ntawm kev hloov mus rau hom tsis muaj lub neej.
Cnidaria muaj qhov sib luag li cas?
Radial symmetry (tsim) Lwm tus yam ntxwv tseem ceeb ntawm qee tus cnidarians yog tias lawv muaj lub cev nrog ze li ntawm radial symmetry.
Puas Cnidaria asymmetrical?
Puas yog cnidarians asymmetrical? Cnidarians nyob rau hauv ob pawg muajib qho sab nraud radial symmetry, tsis tau sab hauv asymmetries thiab bilaterality tshwm sim nyob rau hauv ntau pab pawg.
