Vim li cas obelia suav tias yog kab mob nyob hauv lub tebchaws?

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Vim li cas obelia suav tias yog kab mob nyob hauv lub tebchaws?
Vim li cas obelia suav tias yog kab mob nyob hauv lub tebchaws?

Video: Vim li cas obelia suav tias yog kab mob nyob hauv lub tebchaws?

Video: Vim li cas obelia suav tias yog kab mob nyob hauv lub tebchaws?
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Obelia, genus ntawm invertebrate marine tsiaj ntawm chav kawm Hydrozoa Hydrozoa Hydroids muaj peb theem pib lub neej voj voog: (1) me me dawb-ua luam dej ciliated planula larva txog 1 hli (0.04 nti) ntev, uas nyob thiab metamorphoses rau hauv (2) tsis muaj (nrog), feem ntau yog colonial polyp theem, uas nyob rau hauv lem liberates (3) gamete-tsim txiv neej los yog poj niam medusa (" jellyfish "). https://www.britannica.com › tsiaj › Hydrozoa

hydroid | Yam ntxwv & Lub neej voj voog | Britannica

(phylum Cnidaria). … Obelia medusae tso cov phev los yog qe rau hauv cov dej nyob ib puag ncig, thiab qhov tshwm sim ciliated larva nws thiaj li metamorphoses los tsim ib ceg ceg ntawm polyps.

Puas yog Obelia yog ib lub tebchaws?

Lub Obelia genus belongs rau cov tsiaj txhu hauv hiav txwv invertebrates thiab tuaj yeem pom nyob rau hauv tag nrho cov dej hiav txwv ntawm ntiaj chaw ntiaj teb. Nws yog sedentary marine colonial daim ntawvuas tuaj yeem pom txuas rau saum npoo ntawm seaweeds, pob zeb, pawg ntoo, thiab molluscan plhaub hauv cov dej ntiav (txog 80 meters tob).

Vim li cas Obelia hu ua Trimorphic colony?

Nws hu ua trimorphic vim nws muaj 3 theem hauv nws lub neej thiab cov no yog polyp medusa thiab blastostyle.

Puas yog Obelia Medusa colonial lossis nyob ib leeg?

Obelia dichotoma feem ntau yog ib qho kev colonial hydroid txawm hais tias qee zaus yog tsis muaj ceg thiab nyob ib leeg Daim ntawv colonial sib txawv los ntawm qhov loj, erect thiab xoob-zoo li tus kiv cua lossis elongate mus txog 35 cm hauv qhov siab., kom luv thiab bushy los yog unbranched mus txog 5 cm nyob rau hauv qhov siab.

Puas Obelia nyob colony?

Txhua Obelia pib lub neej raws li polyps txuas nrog lub ntsej muag zoo li dej hiav txwv. Thaum lub sij hawm, lub polyp loj hlob mus txog rau thaum nws tsim ib tug colony nrog rau hydranth thiab gonangium units. Cov hydranth feem ntawm cov colony muaj qhov ncauj thiab plab thiab pab kom cov colony noj.

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