Protochordates vs Euchordates
Protochordata thiab Euchordata yog ob pawg loj ntawm Phylum Chordata; Yog li ntawd, ua ntej kawm qhov txawv ntawm Protochordata thiab Euchordata, cia peb tham luv luv ua ntej tham txog Chordata. Chordates yog qhov ua ntej tshaj plaws thiab tej zaum yog pawg neeg paub zoo tshaj plaws hauv tag nrho cov tsiaj Kingdom suav nrog tib neeg. Lawv yog ob sab, deuterostomial eucoelomates. Qhov tseem ceeb tshaj plaws chordates tus yam ntxwv nta muaj xws li lub xub ntiag ntawm dorsal hollow paj qaum, notochord thiab pharyngeal gill slits. Cov yam ntxwv no muaj nyob rau hauv tag nrho cov chordates ntawm txhua theem ntawm lawv lub neej. Lwm yam kev ua haujlwm siab heev uas pab rau chordates los tswj hwm lwm yam Phyla yog qhov muaj sia nyob endoskeleton, ua pa kom zoo, ua haujlwm zoo, thiab lub paj hlwb hauv nruab nrab. Muaj peb lub ntsiab sub-phyla pom nyob rau hauv Phylum Chordata, uas yog; Urochordata, Cephalochordata thiab Vertebrata. Tawm ntawm peb qhov no, thawj ob Subphyla tau sau ua ke hu ua Protochordata, uas suav nrog qis / qub chordates. Vertebrates raug cais raws li euchordates uas suav nrog chordates siab dua.
Protochordates yog dab tsi?
Protochordates muaj cov kab mob uas tau categorized hauv Subphyla Urochordata thiab Cephalochordata. Protochordates tseem hu ua Acraniata, vim tsis muaj lub taub hau thiab cranium. Cov kab mob no yog marine heev thiab muaj lub cev me me.
Euchordates yog dab tsi?
Euchordates yog cov chordates siab dua uas suav nrog cov tsiaj ntawm Subphyla Vertebrata. Tsis zoo li protochordates, euchordates muaj lub taub hau thiab cranium, yog li hu ua Craniata. Subphyla Vertebrata muab faib ua ob pawg; (a) Agnatha, uas suav nrog cov tsiaj txhu uas tsis muaj lub puab tsaig tiag tiag thiab ua khub appendages thiab (b) Gnathostomata, uas suav nrog cov vertebrates nrog lub puab tsaig tiag tiag thiab khub appendages.
Qhov txawv ntawm Protochordates thiab Euchordates yog dab tsi?
• Protochordates tseem hu ua Acraniata vim tsis muaj taub hau thiab cranium. Euchordates hu ua Craniata vim muaj lub taub hau thiab cranium.
• Protochordates tshwj xeeb yog marine nrog lub cev me, whereas euchordates muaj nyob rau hauv ob qho tib si dej thiab av nyob thiab muaj lub cev loj.
• Euchordates muaj lub taub hau thiab exoskeleton zoo nrog 2 khub appendages. Txawm li cas los xij, protochordates tsis muaj appendages thiab exoskeleton.
• Protochordates muaj enterocoelic coelom, whereas euchordates muaj schizocoelic coelom.
• Protochordates tsis muaj vertebral kem, tsis zoo li euchordates.
• Tsis zoo li hauv protochordates, notochord yog them los yog hloov los ntawm ib sab vertebral hauv euchordates.
• Protochordates muaj pharynx nrog mus tas li gill clefts. Pharyngeal gill clefts ntawm euchordates txuas ntxiv los yog ploj mus.
• Protochordates muaj chamber tsawg lub siab, tab sis euchordates muaj lub siab nrog chambers (2 mus rau 4 chambers).
• Hauv protochordates, ob lub raum muaj protonephridia, whereas, hauv euchordates, ob lub raum muaj meso- lossis metanephridia.
• Kev tsim tawm ntawm protochordates yog kev sib deev lossis kev sib deev, whereas ntawm euchordates ib txwm muaj kev sib deev.
• Gonoducts feem ntau tsis tuaj hauv protochordates, thaum lawv ib txwm muaj nyob hauv euchordates.
• Hauv euchordates, txoj kev loj hlob yog indirect los yog ncaj qha, nrog los yog tsis muaj larval theem whereas, nyob rau hauv protochordates, txoj kev loj hlob yog indirect nrog ib tug dawb-ua luam dej larval theem.
