Octopus vs Jellyfish
Qhov txawv ntawm octopus thiab jellyfish tuaj yeem piav qhia txog lawv lub cev thiab lub cev. Octopus thiab jellyfish yog dej invertebrates. Vim yog qhov sib txawv ntawm lub cev thiab lub cev ntawm ob lub cev, lawv tau categorized nyob rau hauv txawv phyla. Octopus yog categorized nyob rau hauv Phylum Mollusca thaum Jellyfish yog categorized nyob rau hauv Phylum Cnidaria. Lub ntsiab zoo sib xws ntawm octopus thiab jellyfish yog muaj lub cev mos. Tsis tas li ntawd, ob qho tib si kab mob yog carnivores thiab muaj cov txheej txheem tseem ceeb ntawm lub cev yam tsis muaj cov kab mob siab heev xws li hauv cov vertebrates. Tsuas yog ob peb yam zoo sib xws uas lawv qhia, octopus thiab jellyfish yog ob hom kab mob sib txawv nrog lub cev sib txawv thiab lub cev. Cia peb saib cov yam ntxwv tshwj xeeb uas txawv ib qho ntawm lwm qhov ntawm no kom ntxaws.
Octopus yog dab tsi?
Octopus yog categorized nyob rau hauv Phylum Mollusca, Class Cephalopoda thiab pom nyob rau hauv dej hiav txwv thoob plaws ntiaj teb. Lwm yam tshaj li octopus, squids thiab nautiluses kuj suav hais tias yog cephalopods. Octopuses yog cov tsiaj txhu thiab muaj cov kab mob kaw, uas yog tshwj xeeb rau Cephalopods. Tsis tas li ntawd, lawv muaj lub hlwb loj heev thiab tsim cov paj hlwb. Lawv ko taw tau hloov kho rau hauv yim caj npab nrog cov qauv nplaum lossis lub khob nqus dej uas siv los ntes cov tsiaj. Tom qab ntes tus tsiaj nrog lawv txhais tes, lawv tom cov tsiaj nrog lawv lub puab tsaig zoo li lub puab tsaig.
Thaum octopuses raug hem, lawv tshem tawm cov kua dej tsaus nti, uas pab kom lawv zam thiab tsis meej pem cov tsiaj txhu. Tsis zoo li lwm cov mollusks (tshwj tsis yog squid), qee tus octopuses muaj peev xwm hloov lawv cov xim ntawm daim tawv nqaij thiab kev ntxhib los mos los ua ke nrog keeb kwm yav dhau los lossis sib txuas lus nrog lwm cov octopuses.
Jellyfish yog dab tsi?
Jellyfish yog ib qho acoelomate nrog lub cev qub heev thiab pom muaj nyob rau hauv ntug dej hiav txwv hauv hiav txwv tropical thiab temperate. Lawv suav nrog Phylum Cnidaria, uas kuj suav nrog hydroids, corals, thiab hiav txwv anemones. Cnidarians muaj ob lub cev; polyp thiab medusa. Qee hom tshwm sim tsuas yog polyp, tab sis qee qhov tshwm sim tsuas yog medusa. Tab sis feem ntau hom muaj ob daim ntawv no nyob rau hauv lawv lub neej voj voog. Jellyfish qhia radial symmetry thiab lub cev muaj cov ntaub so ntswg, tab sis tsis muaj lub cev. Medusa daim ntawv zoo li jellyfish. Class Scyphozoa, Class Cubozoa, thiab Class Staurozoa yog tsim los ntawm ntau hom jellyfish.
Muaj txog 300 hom jellyfish hauv ntiaj teb. Lub thawv jellyfish yog qhov loj tshaj plaws thiab suav tias yog ib qho ntawm cov kab mob tuag taus tshaj plaws hauv ntiaj teb. Jellyfish yog carnivorous thiab pub rau me me planktons thiab ntses. Cov tsiaj no muaj lub plab zom mov tsis tiav, qhov ncauj qhib rau hauv lub hnab digestive yooj yim. Lub qhov ncauj qhib yog ib puag ncig los ntawm tentacles armed nrog nematocysts, uas yog siv los tua lawv cov tsiaj.
Dab tsi yog qhov txawv ntawm Octopus thiab Jellyfish?
Phylum:
• Octopus belongs rau Phylum Mollusca.
• Jellyfish belongs rau Phylum Cnidaria.
Presence of Coelom:
• Octopus is coelomates (Tub coelom yog tam sim no).
• Jellyfish yog acoelomates (True coelom tsis muaj).
Digestive system:
• Octopus muaj lub plab zom mov tag nrog ob lub qhov ncauj thiab qhov quav.
• Jellyfish muaj lub plab zom mov tsis tiav nrog lub qhov ncauj xwb.
Nervous system:
• Octopus muaj lub hlwb loj thiab txhim kho lub paj hlwb zoo.
• Jellyfish muaj lub paj hlwb primitive heev.
Kev muaj cov nematocysts:
• Jellyfish muaj nematocysts; ib lub xov tooj tshwj xeeb.
• Octopus tsis muaj nematocysts.
Kev muaj lub ntsej muag:
• Octopus muaj yim tentacles nrog suction pads los ntes cov tsiaj.
• Jellyfish muaj ob peb lub tentacles nyob ib ncig ntawm nws lub qhov ncauj nrog nematocysts mus ntes prey.
Circulatory system:
• Kaw circulatory system muaj nyob rau hauv octopus.
• Tsis pom cov kab mob circulatory nyob rau hauv jellyfish.
Eyes:
• Octopus muaj qhov muag zoo.
• Tsis pom qhov muag hauv jellyfish.
Cov leeg thiab lub puab tsaig:
• Cov leeg thiab lub puab tsaig pom nyob rau hauv ib tug octopus.
• Cov leeg thiab lub puab tsaig tsis pom nyob rau hauv jellyfish.
