Puas yog radial symmetry asymmetrical?
Puas yog radial symmetry asymmetrical?

Video: Puas yog radial symmetry asymmetrical?

Video: Puas yog radial symmetry asymmetrical?
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Anonim

Tsuas yog ob peb pawg tsiaj tso tawm radial symmetry , thaum asymmetry yog ib qho tshwj xeeb ntawm phyla Porifera (sponges).

Yog li ntawd, qhov txawv ntawm asymmetry radial symmetry thiab ob sab symmetry yog dab tsi?

Ob tog vs. Ob sab symmetry txawv ntawm radial symmetry . Nyob rau hauv tas li ntawd, lub radially symmetrical Cov kab mob zoo ib yam li lub ncuav qab zib, qhov twg txhua daim yuav luag zoo tib yam txawm tias lawv tsis muaj sab laug lossis sab xis; Hloov chaw, lawv muaj qhov saum npoo thiab hauv qab.

Ib yam li ntawd, cov ntses hnub qub puas radially symmetrical? Radial symmetry txhais tau hais tias lub cev yog lub hub, zoo li lub tsheb kauj vab log, thiab tentacles yog spokes los ntawm nws (xav txog ib tug ntses hnub qub ). Raws li larvae, echinoderms yog ob sab symmetrical . Thaum lawv loj tuaj, lawv ua radially symmetrical . Feem ntau cov neeg laus echinoderms nyob rau hauv qab ntawm dej hiav txwv pem teb.

Xav txog qhov no, dab tsi yog asymmetrical lub cev symmetry?

asymmetrical : muaj kev tsis sib haum xeeb ntawm qhov chaw; nthuav tawm tsis muaj qauv. ob tog symmetry : muaj kev sib npaug ntawm qhov chaw ( symmetry ) hais txog lub dav hlau ntsug khiav ntawm lub taub hau mus rau tus Tsov tus tw. radial symmetry : ib form symmetry nyob qhov twg qhov zoo tib yam yog teem nyob rau hauv ib ncig zam nyob ib ncig ntawm ib tug central axis.

Puas yog Hydra radially symmetrical?

Hydras , zoo li txhua tus cnidarians, tso saib radial symmetry . Qhov no txhais tau hais tias lawv tau tsim nrog ib qho txawv sab saum toj thiab hauv qab, tab sis tsis muaj qhov txawv ntawm sab laug lossis sab xis. Nws yog ua tau rau lub hydra ua ua kom pom ob hom symmetry tib lub sijhawm, raws li tetrameral symmetry tuaj yeem tsim nyob ib puag ncig ib radial npaj.

Pom zoo: