Pob parazoa muaj symmetry?

Cov txheej txheem:

Pob parazoa muaj symmetry?
Pob parazoa muaj symmetry?

Video: Pob parazoa muaj symmetry?

Video: Pob parazoa muaj symmetry?
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Anonim

Feem ntau hexactinellids nthuav tawm radial symmetry thiab feem ntau tshwm daj ntseg hais txog xim thiab cylindrical hauv daim ntawv. Feem ntau yog vase-puab, raj-puab, los yog pob tawb-puab nrog leuconoid lub cev qauv.

Yuav ua li cas symmetry ua parazoa muaj?

Porifera thiab Placozoa

Ntawm cov pab pawg no tsuas muaj txoj sia nyob, uas yog phylum Porifera, thiab Trichoplax hauv phylum Placozoa. Parazoa tsis qhia lub cev sib luag (lawv asymmetric); tag nrho lwm pab pawg ntawm cov tsiaj muaj ib co symmetry. Tam sim no muaj 5000 hom, 150 yam uas yog dej tshiab.

Puas asymmetry tsuas pom nyob rau hauv parazoa?

Asymmetry tsuas yog pom hauv Parazoa. Radial symmetry yog qhov zoo tshaj plaws rau kev ua neej nyob ruaj khov Ob tog symmetry tso cai rau kev taw qhia.

Qhov txawv ntawm parazoa thiab Eumetazoa yog dab tsi?

Parazoa Versus Eumetazoa

Ib daim ntaub so ntswg yog kev sib sau ntawm cov hlwb uas ua haujlwm. Parazoans tsis muaj cov ntaub so ntswg tiag, whereas eumetazoans muaj cov ntaub so ntswg tiag.

Puas parazoa muaj cov ntaub so ntswg tiag?

Parazoa: Lub Phylum Porifera (Sponges)

2). … Thaum cov sponges yog tsim los ntawm cov xoob xoob ntawm cov hlwb, lawv tsis muaj cov ntaub so ntswg tiag tiag uas yog tus yam ntxwv ntawm eumetazoans.

Pom zoo: