Vertebrates vs Invertebrates
Tag nrho cov tswv cuab ntawm lub nceeg vaj tsiaj muaj xws li nyob rau hauv ob pawg no, vertebrates thiab invertebrates. Qhov sib txawv ntawm ob pawg no yog umpteen. Txawm li cas los xij, tsab xov xwm no npaj siab los tham txog qhov sib txawv ntawm qhov sib txawv ntawm lub cev tseem ceeb ntawm vertebrates thiab invertebrates. Los ntawm lub suab ntawm nomenclature, nws txhais tau hais tias muaj thiab tsis muaj vertebrae nyob rau hauv cov tsiaj. Piv txwv li, ntau haiv neeg thiab kev faib tawm yog siab heev nyob rau hauv invertebrates, whereas complexity, kev loj hlob, thiab tshwj xeeb yog siab ntawm vertebrates.
Vertebrates
Vertebrate tsiaj muaj lawv cov pob txha tshwj xeeb nrog tus txha caj qaum. Lub nraub qaum yog ib kem ntawm vertebrae, uas yog ib feem ntawm lawv lub cev pob txha. Lub cev pob txha tuaj yeem yog pob txha lossis cartilaginous. Ntawm cov tswv cuab ntawm Chordates, lawv yog pawg loj tshaj plaws suav nrog Cov Noog, Mammals, Ntses, Amphibians, thiab Cov tsiaj reptiles. Lawv tus txha caj qaum khiav raws lub cev nruab nrab ntawm thaj chaw cranial thiab caudal nrog cov hlab ntsha ntawm cov hlab ntsha hu ua qaum qaum. Vertebrates muaj ob lub cev symmetrical. Qhov tseem ceeb tshaj plaws ntawm cov vertebrates yog lub hlwb tsim tau zoo los ntawm cov qauv pob txha hu ua pob txha taub hau. Lawv cov kab mob ua pa ua haujlwm nrog lub ntsws los yog gills rau kev sib pauv roj ntawm cov tsiaj thiab ib puag ncig. Qee zaum, muaj lwm qhov chaw sib pauv roj av viz. Cov kab noj hniav ntawm qhov ncauj thiab tawv nqaij yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv amphibians. Lub vertebrate digestive system yog ua tiav ib qho pib ntawm lub qhov ncauj thiab xaus tom qab qhov quav. Qhov no gastro plab hnyuv kab mob yog ventrally mus rau tus txha caj qaum. Tsis tas li ntawd, lub qhov ncauj qhib anterior, thiab lub qhov quav qhib los ntawm qhov kawg ntawm lub cev. Lub circulatory system yog kaw nrog ib tug ventrally nyob rau hauv lub plawv. Cov no yog cov yam ntxwv tseem ceeb ntawm vertebrates.
Invertebrates
Invertebrates tsuas yog cov tsiaj tsis muaj pob txha. Invertebrates yog ib pawg tsiaj loj uas muaj ntau dua 97% ntawm tag nrho cov tsiaj tsiaj nrog ntau cov tsiaj xws li Phylas thiab Subphylas. Sponges, coelenterates, echinoderms, Annelids, Molluscs (Squid, Octopus, Snails, Bivalves), thiab Arthropods yog tag nrho cov invertebrates. Qee lub cev tsis muaj zog xws li Kab thiab ntau Molluscs (mollusks) muaj cov pob txha sab nraud, thaum lwm tus tsis muaj. Vim tsis muaj kev txhawb nqa, feem ntau ntawm cov invertebrates me me. Lub paj hlwb muaj ntau haiv neeg ntawm invertebrates xws li los ntawm loosely hydra paj net mus rau sophisticated cephalopod hlwb. Kev noj zaub mov hauv cov tsiaj txhu feem ntau yog cov kab mob parasitic nrog rau lwm cov cwj pwm heterotrophic, thiab lawv cov kab ke yooj yim heev. Qee lub sij hawm tsuas muaj ib qho qhib rau ob qho tib si pub thiab defecation. Circulatory systems yog qhib nyob rau hauv ntau zaus, thiab lub plawv yog dorsal. Lawv cov kab mob ua pa muaj ntau yam sib txawv uas pib los ntawm qhov yooj yim diffusion. Invertebrates qhia ob qho tib si radial thiab ob tog symmetry hauv lawv lub cev lub koom haum. Tag nrho cov kev sib tham txog cov yam ntxwv ntawm invertebrates muaj kev sib txawv ntawm lawv.
Dab tsi yog qhov txawv ntawm Vertebrates thiab Invertebrates?
• Vertebrates muaj ib tug txha nraub qaum nrog txha caj qaum, whereas invertebrates tsis.
• Kev sib txawv yog qhov tshwj xeeb ntawm cov invertebrates piv rau vertebrates.
• Vertebrates yeej ib txwm muaj ob tog sib luag, thaum cov invertebrates tuaj yeem pom ob sab lossis radial symmetry.
• Vertebrates feem ntau yog lub cev loj thiab txav nrawm piv rau cov pob txha.
• Vertebrates muaj cov ntshav kaw, lub hlwb tsim tau zoo, gills lossis ntsws rau kev ua pa, thiab lub paj hlwb nyuaj, hos cov no yog cov qub qub nyob rau hauv invertebrates. Yog li ntawd, nws txhawj xeeb tias vertebrates muaj ntau yam tshwj xeeb los rho tawm qhov zoo tshaj plaws ntawm ib puag ncig piv rau invertebrates.
Txawm hais tias tag nrho cov kev hloov pauv no, ib tus neeg tuaj yeem kos ib qho taw qhia tias cov invertebrates hloov tau ntau dua vim lawv qhov yooj yim, qhov vertebrates tsis muaj qhov hloov tau zoo hauv kev sib piv vim qhov tshwj xeeb. Txawm li cas los xij, kuv xav hais ib nqe lus nrov kom tiav uas nyob rau hauv evolution tshwj xeeb kev tuag tes tuag taw thiab ultra tshwj xeeb tua cov vivability ntawm taxons.
