Qhov sib txawv tseem ceeb ntawm diploblastic thiab triploblastic yog cov kab mob diploblastic muaj ob txheej kab mob thiab tsis muaj mesoderm thaum cov kab mob triploblastic muaj tag nrho peb cov kab mob, suav nrog mesoderm.
Nyob ntawm cov kab mob thawj cov txheej txheem tam sim no nyob rau theem blastula ntawm cov kab mob, muaj ob pawg kab mob xws li diploblastic thiab triploblastic. Lub hauv paus peb txheej txheej yog ectoderm, endoderm, thiab mesoderm. Ectoderm thiab endoderm txheej yog tshwm sim rau ob qho tib si diploblastic thiab triploblastic tsiaj, thaum mesoderm tsuas muaj nyob rau hauv cov tsiaj triploblastic. Ntxiv nrog rau ob hom no, muaj ib pab tsiaj hu ua sponges, uas muaj ib txheej tsis txawv; Yog li, lawv hu ua monoblastic.
Diploblastic yog dab tsi?
Cov kab mob Diploblastic tsuas muaj ob txheej txheej kab mob hauv lawv cov blastula: endoderm thiab ectoderm. Lawv tsis muaj txheej nruab nrab lossis mesoderm. Cov txheej sab hauv, uas yog endoderm, ua rau cov ntaub so ntswg txuam nrog plab thiab cov qog ua haujlwm. Hauv qhov sib piv, txheej txheej sab nrauv, ectoderm, ua rau kom npog cov ntaub so ntswg zoo li epidermis.
Daim duab 01: Gastrulation ntawm ib tug Diploblast – Tsim cov kab mob txheej los ntawm ib tug Blastula (1) mus rau ib tug Gastrula (2).
Tsiaj txhu hauv phyla Cnidaria thiab Ctenophore yog cov pab pawg no. Cnidarians suav nrog jellyfish, corals, hiav txwv cwjmem, hiav txwv anemones, thiab lwm yam thiab ctenophores muaj xws li zuag jellies. Cov metazoans yooj yooj yim no yeej tsis muaj lub cev kab noj hniav thiab lub cev muaj tseeb.
Triploblastic yog dab tsi?
Feem ntau cov metazoans tsim peb txheej txheej kab mob hauv lawv cov blastula; Yog li ntawd, lawv raug xa mus rau cov tsiaj txhu triploblastic. Peb txheej txheej kab mob tseem ceeb yog ectoderm, mesoderm, thiab endoderm. Ectoderm yeej ua rau nce mus rau lub epidermis thiab kuj tseem tuaj yeem ua rau lub cev hnov tsw thiab qhov chaw ntawm lub paj hlwb. Mesoderm feem ntau tsim cov leeg, cov ntaub so ntswg sib txuas, cov hlab ntsha, cov kab mob epithelial ntawm sab hauv kab noj hniav, qee cov kab mob excretory, thiab cov pob txha pob txha. Endoderm ua rau muaj qhov tshwm sim ntawm cov kab mob plab, kab mob ua pa, qhov chaw ntawm cov qog endocrine thiab cov kab mob hauv nruab nrog cev, thiab cov kab mob auditory.
Daim duab 02: Diploblast thiab Triploblast
Ntxiv mus, cov tsiaj txhu triploblastic muaj cov qauv hauv lub cev, suav nrog coelom lossis lub cev muaj tseeb kab noj hniav thiab cov kabmob tseeb. Txawm li cas los xij, qee cov tsiaj txhu triploblastic poob lawv lub cev kab noj hniav thiab tom qab ntawd los ua acoelomates. Qee cov tsiaj txhu triploblastic xws li acoelomates muaj mesoderm thiab mesenchyme nyob nruab nrab ntawm ectoderm thiab endoderm. Tsis tas li ntawd, cov tsiaj txhu triploblastic nrog hemocoel muaj mesoderm thiab hemocoel nyob nruab nrab ntawm ectoderm thiab endoderm. Hauv qhov sib piv, triploblastic coelomates muaj mesoderm thiab coelom nyob nruab nrab ntawm ectoderm thiab endoderm.
Dab tsi yog qhov zoo sib xws ntawm Diploblastic thiab Triploblastic?
- Diploblastic thiab triploblastic yog ob pawg kab mob raws li tus naj npawb ntawm cov kab mob thawj zaug hauv theem blastula.
- Ectoderm thiab endoderm txheej yog muaj rau ob qho tib si diploblastic thiab triploblastic tsiaj.
Qhov txawv ntawm Diploblastic thiab Triploblastic yog dab tsi?
Diploblastic thiab triploblastic yog ob pawg kab mob. Raws li lawv cov npe qhia, cov tsiaj txhu diploblastic tsuas muaj ob txheej kab mob xwb thaum cov tsiaj txhu triploblastic muaj tag nrho peb cov kab mob. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm diploblastic thiab triploblastic. Feem ntau, cov tsiaj txhu diploblastic yog cov metazoans qub, thaum cov tsiaj txhu triploblastic yog cov metazoans siab heev.
Ntxiv mus, qhov sib txawv tseem ceeb ntawm diploblastic thiab triploblastic yog tias cov tsiaj txhu diploblastic tsis muaj cov kab mob hauv nruab nrog cev thiab lub cev kab noj hniav thaum cov tsiaj txhu triploblastic muaj cov kabmob thiab cov kab noj hniav. Tsis tas li ntawd, cov tsiaj txhu diploblastic qhia radial symmetry thaum triploblastic tsiaj pom ob sab symmetry. Yog li, qhov no kuj yog qhov sib txawv loj ntawm diploblastic thiab triploblastic.
Cov duab hauv qab no qhia txog cov ntaub ntawv ntxiv txog qhov sib txawv ntawm diploblastic thiab triploblastic.
Summary – Diploblastic vs Triploblastic
Feem ntau, muaj peb txheej kab mob nyob rau hauv lub blastula ntawm vertebrates. Lawv yog ectoderm, mesoderm thiab endoderm. Yog hais tias lub cev muaj tag nrho peb txheej, peb hu nws triploblastic. Txawm li cas los xij, qee cov kab mob tsuas muaj ob txheej: ectoderm thiab endoderm. Lawv tsis muaj mesoderm. Yog li ntawd, peb hu lawv diploblastic. Txij li thaum lawv tsis muaj mesoderm, lawv tsis muaj lub cev thiab lub cev kab noj hniav. Ntxiv mus, cov tsiaj txhu diploblastic qhia radial symmetry thaum triploblastic tsiaj pom ob sab symmetry. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm diploblastic thiab triploblastic.
