UMary Allen
Bagqibela ukuba nokhokho omnye kumgca wokuzivelela kwezilwanyana ezinomqolo, ezibandakanya abantu, malunga nezigidi ezingama-420 zeminyaka eyadlulayo. Isinyanya esiqhelekileyo esinayo i-coelacanth kunye nentlanzi, nangona kunjalo, yayiphila kwiminyaka engaphezu kwezigidi ezingama-20 eyadlulayo
Yintoni ookhokho beentlanzi?
Izikali ezityebileyo, ezinzima, i-asymmetrical caudal fin, kunye ne-vertebrae eyenziwe nge-cartilage endaweni yethambo: "inguqulelo yokuqala" yeentlanzi zanamhlanje. Izikali zabo zamandulo zaziquka izikwere zethambo ezicwangciswe njengamatye ecobblestone kwaye zigqunywe ngohlobo lwe-enamel yezinyo.
Ngaba umntu unazo iigila?
I-arch yokuqala yegill
Iindawo ezinkulu zobuso, ezifana nomhlathi ophezulu (i-maxilla), umhlathi ophantsi (i-mandible), kunye nenkalakahla, kunye nesando se-ossicles kunye ne-anvil (kodwa kungekhona i-stirrup), zivela kwi-first-gill arch (mandibular arch). ).
Yintoni abafana ngayo abantu neentlanzi?
Abantu baneempawu ezifana neentlanzi! Ukufana kuyamangalisa, oku kunokubonwa ekuphuhlisweni kwe-embryonic yabantu bokuqala. Apha amehlo ethu asekho kwicala lentloko kunye nomlebe wethu ophezulu, kwaye umhlathi wethu, kunye nenkalakahla yenzelwe njengezakhiwo ezinjenge-gill kwindawo yentamo.
Ngaba iiPisces Zinobuntu?
Kukho neentlobo ezahlukeneyo zeePisces - ezinye ziyi-daredevils, ezinye zinoloyiko-iikati. Kuvavanyo, abaphandi bafumanise ukuba iintlanzi zinobuntu kwaye zikho neenkokeli esikolweni. IiPisces azibonakali ngathi zinobuntu obahlukileyo kubantu abangaziqhelanga.
Sesiphi isilwanyana sokuqala emhlabeni?
I-Ichthyostega sisilwanyana sokuqala esikhethekileyo esibizwa ngokuba yi-terrestrial, ubuncinane sisilwanyana sokuqala esisemhlabeni esiye safumana ifosili.
Yayiyintoni intlanzi yokuqala emhlabeni?
I-coelacanth, esaphila nanamhlanje kwaye iyeyentlanzi, yayiyintlanzi yokuqala ukuba neepectoral fins zomelezwe ngethambo. I-amphibian exhobileyo i-Ichthyostega yavela kwangaphambi kwayo, i-coelacanth, kwaye yaphela malunga ne-350 yezigidi zeminyaka eyadlulayo.
Ngaba iiPisces zeNtlalo?
Nangona kunjalo, uphando olukhulayo lubonisa ukuba iintlanzi, ngokuchaseneyo, izidalwa zengqondo kunye nezentlalo ezikwazi ukuvakalelwa kunye nezinto ezimangalisayo.
Ngaba intlanzi inentliziyo?
Intliziyo iqhuba inkqubo yokujikeleza kwentlanzi: ioksijini ingena egazini ngeegili okanye amanye amalungu afunxa ioksijini ngomsebenzi wentliziyo. Phakathi kwezilwanyana ezinethambo lomqolo, iintlanzi zinentliziyo elula. Elona lungu libalulekileyo lemetabolism sisibindi.
Ngaba ukrebe yintlanzi?
Ngokungafaniyo neminenga, ookrebe abazozilwanyana ezanyisayo kodwa bayinxalenye yeqela leentlanzi ezitya i<em>cartilaginous.
Ngaba iintlanzi zindlongondlongo?
Umzekelo, iintlanzi zisebenza ngokwahlukileyo okanye zinobundlobongela kwaye zisabela ngendlela eyahlukileyo kwindawo entsha okanye kwiimeko ezinobungozi kakhulu.
Ukuhlalisana kweentlanzi kukwahluke kakhulu kwaye kuphucukile kunokuba kucingelwa ngokubanzi. Intlanzi nganye iyazana, iyasebenzisana, yenza ubuhlobo bobomi bonke, kwaye iyazazi apho ikhoyo esikolweni. Zininzi izizathu ezibangela ukuba izazinzulu zingabuhoyi ubuchule beentlanzi ixesha elide.
Uthini ngentlanzi?
Abantu abazalwa phantsi komqondiso wePisces bathandana kakhulu. Bakhetha ukuba sekhaya neentsapho zabo. Njengophawu lwamanzi, iiPisces zingumntu oneemvakalelo, kodwa azithethi naye wonke umntu ngeemvakalelo zabo. Ukuze benze oku, bafuna uvelwano olufanayo nolo balubonakalisa kwabanye.
Ngaba intlanzi ingagqabhuka?
Kodwa ndiyakwazi ukuphendula kuphela umbuzo osisiseko kwisihloko nge-YES ukusuka kumava am. Iintlanzi zinokugqabhuka.
Ngaba intlanzi inazo iindlebe?
Iintlanzi zineendlebe kuyo yonke indawo
Awunakuzibona, kodwa iintlanzi zineendlebe: iityhubhu ezincinci ezizaliswe lulwelo emva kwamehlo azo ezisebenza njengeendlebe zangaphakathi zezilwanyana ezinomqolo. Amaza esandi anempembelelo abangela ukuba amatye amancinane, adadayo enziwe ngekalika angcangcazele.
Kutheni iintlanzi zibaluleke kangaka nje?
Ilungu ngalinye liyinxalenye yekhonkco lokutya kwaselwandle kwaye ngaloo ndlela lidlala indima ebalulekileyo kwi-ecosystem. Ukongeza, la macandelo ekhonkco lokutya aqinisekisa ukusinda kwazo zonke izinto eziphilayo elwandle, njengoko zikwachaphazela kakhulu ubomi bethu. Iintlanzi ziyinxalenye ebalulekileyo ye-ecosystem yolwandle.
Ikhala njani intlanzi?
Iintlanzi zikhupha izinto ezibizwa ngokuba zizoyikisayo xa ziphazamisekile. Mhlawumbi oko kwenzeka kwezinye iintlanzi kwachaphazela intlanzi - ngendlela engaphezulu ye-physiological. Yintoni umahluko phakathi kokuba buhlungu 'kwenyani'?
Ngaba intlanzi ineemvakalelo?
Kwangexesha elide, kwakukholelwa ukuba iintlanzi azisoyiki. Abanayo inxalenye yobuchopho apho ezinye izilwanyana kunye nathi bantu ziqhuba ezo mvakalelo, izazinzulu zatsho. Kodwa uphononongo olutsha lubonise ukuba iintlanzi zivakalelwa kwiintlungu kwaye zinokuxhalaba kunye noxinzelelo.