Sau cov haujlwm sib txawv ntawm hydroid polyps. Vim li cas Portuguese txiv neej-ntawm-kev ua tsov ua rog raug cais raws li hydroid? … Cov daim nyias nyias txuas cov polyps lub plab zom mov, yog li muaj kev noj zaub mov ntawm lawv, uas tsis tshwm sim nrog hiav txwv anemones.
Lub luag haujlwm ntawm polyp hauv Hydroid yog dab tsi?
Tus phev fertilize lub qe hauv zes qe menyuam. Tsis zoo li cov jellyfish, cov neeg laus hiav txwv anemone nyob ua ib tug polyp, txuas mus rau lub substrate los ntawm ib tug muscular ko taw. … Lwm cov polyps zom zaub mov uas raug ntes thiab tua nyob rau hauv lub tentacles. Thiab, ib yam li lwm cov hydroids, qee cov polyps ua haujlwm rau kev ua me nyuam.
Vim li cas jellyfish thiab coral cais ua ke?
Corals thiab Jellyfish tau muab faib ua ke vim lawv (sib koom tib lub vaj tse, muaj cov tsev pheeb suab, yog cov chaw sov, yog planktonic)? … stinging tentacles thiab ib tug (streamline shape, saclike digestive tract, raj digestive ib ntsuj av, ventral paj qaum)?
Puas yog coral thiab jellyfish cais ua ke?
Corals, hiav txwv anemones thiab jellyfish tag nrho yog nyob rau tib pawg tsiaj loj - cnidarians. Lub npe los ntawm Greek 'knide', txhais tau tias nettle - lawv nqa ib rab riam ntse hauv lawv cov tentacles.
Dab tsi yog jellyfish lub kaus zoo li tus qauv?
Medusa, hauv zoology, ib qho ntawm ob lub cev tseem ceeb ntawm lub cev tshwm sim hauv cov tswv cuab ntawm cov tsiaj txhu invertebrate phylum Cnidaria. Nws yog daim ntawv ntawm jellyfish. Lub cev medusoid yog tswb- lossis kaus-puab. Dai downward los ntawm qhov chaw yog ib tug stalk zoo li qauv, lub manubrium, bearing lub qhov ncauj ntawm nws lub ntsis.
