2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Crinoids yog echinoderms ntsig txog cov ntses hnub qub, hiav txwv urchins, thiab cov hnub qub nkig. Zoo li lwm cov tswv cuab ntawm lawv cov phylum lawv yog cov tawv nqaij tawv, muaj tsib sab lossis pentaradial symmetry li cov neeg laus thiab cov calcium carbonate endoskeleton. … Crinoids yog loj carbonate tsim cov kab mob thaum lub sij hawm Paleozoicthiab Mesozoic.
Vim li cas crinoids hauv phylum Echinodermata?
Crinoids (Phylum Echinodermata, Chav Kawm Crinoidea)
stalked crinoids, feem ntau hu ua hiav txwv lilies, muaj qhov ntev, qia zoo li stalk tsim los ntawm ntau pawg disk-puab ossicles. Tus stalk txuas lub cev mus rau hauv av hiav txwvthiab tsa lub cev tawm hauv qab thiab mus rau qhov tam sim no uas nws tuaj yeem noj.
Puas yog crinoids suav tias yog echinoderms?
Crinoid, txhua yam marine invertebrate ntawm chav kawm Crinoidea (phylum Echinodermata) feem ntau muaj lub khob me ntsis lub cev thiab tsib los yog ntau dua thiab cov caj npab hloov tau. Lub caj npab, edged nrog feathery projections (pinnules), muaj cov kab mob ntawm cov me nyuam thiab nqa ntau lub raj taw nrog sensory functions.
Dab tsi ua rau ib tug tsiaj txhu?
Crinoids yog echinoderms thiab yog tsiaj tiag tiag txawm tias lawv feem ntau hu ua hiav txwv lilies. Lub cev nyob hauv lub khob zoo li lub cev pob txha (calyx) ua los ntawm kev sib cuam tshuam ntawm calcium carbonate daim hlau. Caj npab txuas nrog lub calyx kuj muaj cov pob txha plated thiab siv los ntes cov khoom noj.
Yog crinoidstshuaj lom?
Crinoids tsis tshua muaj kev tawm tsam los ntawm ntses. Lawv tsim los ntawm ob peb qhov chaw noj tau thiab lawv qhov chaw spiny emit mucus uas qee zaum lom rau ntses.
Pom zoo:
Puas pom qhov tseem ceeb yog vim li cas lossis vim li cas ho tsis?
Kev sib txuas lus pom kev pab cov neeg tuaj saib nkag siab cov ntaub ntawv. Nws ua rau kom nkag siab txog cov ntsiab lus. Hom duab ob sab uas pab kev sib txuas lus muaj xws li kos duab, kos duab kos duab, animation, kos npe, typography, graphic designs, thiab lwm yam.
Puas yog hiav txwv squirts echinoderms?
Protochordate. Protochordate, ib tug tswv cuab ntawm ob qho tib si ntawm ob qho tib si invertebrate subphyla ntawm phylum Chordata: Tunicata (sea squirts, salps, thiab lwm yam) thiab Cephalochordata (amphioxus). Tus tsiaj twg feem ntau hu ua sea squirt?
Nyob rau hauv dab tsi phylum ua crinoids?
Crinoids yog cov tsiaj hauv hiav txwv uas muaj nyob hauv phylum Echinodermatathiab chav Crinoida. Nyob rau hauv dab tsi phylum ua crinoids hlwb? Crinoids yog cov tsiaj hauv hiav txwv uas tsim cov chav kawm Crinoidea, yog ib chav kawm ntawm phylum Echinodermata, uas kuj suav nrog cov ntses hnub qub, nkawg hnub qub, hiav txwv urchins thiab hiav txwv dib.
Qhov twg nrhiav crinoids?
Crinoids yog cov pob txha muaj nyob hauv Silurian pob zeb ntawm Shropshire, cov pob zeb Carboniferous thaum ntxov ntawm Derbyshire thiab Yorkshire thiab cov pob zeb Jurassic ntawm Dorset thiab Yorkshire coasts. pom crinoids nyob qhov twg?
Puas echinoderms puas muaj radial symmetry?
Cov echinoderms muaj a radially teem, pentamerous lub cev qauv uas txawv heev ntawm ob sab lub cev qauv ntawm cov cuam tshuam deuterostome phyla, hemichordates thiab chordates. … purpurescens, morphogenesis ntawm tus neeg laus echinoderm tuaj yeem pom thaum lub sijhawm ntxov ntawm kev loj hlob.
