Cov txheej txheem:
- Obelia yug me nyuam li cas?
- Qhov twg hauv qab no yog cov kab mob qog nqaij hlav hauv Obelia?
- Medusa theem ntawm Obelia ua dab tsi?
- Qhov twg fertilization tshwm sim hauv Obelia?
Video: In obelia medusa yog tsim los ntawm?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
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:
Qhov twg hauv qab no yog tsim los ntawm mesoderm ntawm gastrula?
Gastrulation Thiab Embryonic Kab Mob Txheej: Piv txwv nqe lus nug 5 Peb lub embryonic kab mob khaubncaws sab nraud povtseg Cov ectoderm yog ib qho ntawm peb txheej txheej kab mob thawj zaug tsim thaum ntxov embryonic kev loj hlob. Nws yog txheej txheej sab nraud, thiab yog sab nraud rau mesoderm (cov txheej nruab nrab) thiab endoderm (txheej sab hauv tshaj).
Puas yog feem ntau tsim los ntawm metamorphism ntawm cov xuab zeb?
Metamorphism ntawm quartz-nplua nuj sandstone tsim quartzite (Fig. 8.9), ib qho nyuaj heev, nonfoliated metamorphic pob zeb muaj yuav luag tag nrho ntawm silica. 2. Metamorphism ntawm limestone thiab dolomite ua rau recrystallization ntawm calcite los ua marble (Fig .
Dab tsi ntawm cov spheres hauv qab no tau tsim los ntawm cov txheej txheem ntawm outgassing?
5. Cov pa roj tso tawm los ntawm cov hluav taws xob tawm hluav taws xob, tsim peb cov huab cua. Nco ntsoov tias vim roj av thiab dej vapor muaj tsawg tsawg kawg nkaus, lawv 'ntab' li tsim peb cov cua. 6 . Yuav ua li cas tshem tawm daim ntawv?
Yog tsim los ntawm solidification ntawm magma?
Igneous pob zeb daim ntawv thaum magma (molten pob zeb) txias thiab crystallizes, txawm nyob rau ntawm lub roob hluav taws nyob rau saum npoo ntawm lub ntiaj teb los yog thaum lub pob zeb melted tseem nyob rau hauv lub crust. … Intrusive rocks Intrusive rocks Intrusive rocks yog tsim thaum magma nkag mus rau cov pob zeb uas twb muaj lawm, crystallizes, thiab solidifies underground tsim intrusion, xws li batholiths, dikes, sills, laccoliths, thiab volcanic caj dab.
Lub hauv paus twg yog tsim los ntawm kev deamination ntawm adenine?
Lub hauv paus twg yog tsim los ntawm kev deamination ntawm adenine? Kev piav qhia: Deamination hloov adenine rau hypoxanthine. Hypoxanthine tsim ib daim ntawv cog lus hydrogen rau cytosine es tsis yog rau thymine. 4 . Lub hauv paus twg yog tsim los ntawm kev deamination ntawm adenine &
