In obelia medusa yog tsim los ntawm?

Cov txheej txheem:

In obelia medusa yog tsim los ntawm?
In obelia medusa yog tsim los ntawm?

Video: In obelia medusa yog tsim los ntawm?

Video: In obelia medusa yog tsim los ntawm?
Video: Cnidarian Animation - Polyp and Medusa 2024, Kaum ib hlis
Anonim

Tus polyp asexually tsim medusae, lossis jellyfish. Obelia medusae tso cov phev los yog qe rau hauv cov dej ib puag ncig, thiab qhov tshwm sim ciliated larva nws thiaj li metamorphoses los tsim ib ceg ceg ntawm polyps.

Obelia yug me nyuam li cas?

Tam sim no, Obelia medusa ua luam dej ywj pheej thiab rov tsim dua kev sib deev los ntawm kev tso cov qe los yog phev mus rau hauv dejThaum fertilization, lub resultant zygote tsim mus rau hauv ib tug dawb-ua luam dej larva (plural: larvae) npog hauv cilia, los yog cov plaub hau me me. Tus larva no siv cilia ua luam dej thaum loj hlob.

Qhov twg hauv qab no yog cov kab mob qog nqaij hlav hauv Obelia?

Gonzooids yog cov kab mob qog noj ntshav thiab, dhau los ntawm kev tawg, tsim cov tiam tom ntej - me me jellyfish hu ua medusae. Lub cim thib ob ntawm Obelia lub neej voj voog pib thaum lub medusae raug tso tawm los ntawm gonzooids thiab dhau los ua luam dej dawb.

Medusa theem ntawm Obelia ua dab tsi?

Lub sijhawm no ntawm lub neej, Obelia yog nyob rau hauv substrate nto Ntawm cov neeg laus laus muaj cov hydranths hu ua gastrozooids, uas tuaj yeem pom nthuav lossis cog lus, los pab kev loj hlob. ntawm lub cev los ntawm kev pub mis; polyp gonzooids muaj medusa buds.

Qhov twg fertilization tshwm sim hauv Obelia?

Fertilization tshwm sim nyob rau hauv dej hiav txwv uas cov kab mob tau tso tawm dawb, los yog cov spermatozoa yuav nqa los ntawm cov dej ntws mus rau cov poj niam medusae thiab fertilize lub ova nyob rau hauv situ. Zygote tsim tom qab fertilization, tam sim ntawd undergoes cleavage.

Pom zoo: