Choonadi mmene modabwitsa zimasokoneza

Kwa zaka zambiri, anthu ayesa wotsegula M'maso mwanga, aphunzire za dziko, kupeza mayankho a mafunso awo ambiri. ndi tanthauzo la moyo ndi kukhalapo chiyani? Kodi pali chifukwa apamwamba? Kodi chimachitika n'chiyani munthu akamwalira? Pa nkhani zimenezi kungoganizira a nzeru kwambiri a dziko pa moyo wake. M'nkhaniyi tiona, mwina, osati nzeru zaumunthu, zambiri wamba, koma mochepa chidwi funso. Timanena za modabwitsa, ndipo makamaka, momwe kawetedwe modabwitsa.

mbuye wa kunyanja

Iwo ndi ubongo kapena, kapena mafupa, palibe magazi. Komabe, maonekedwe awo analemera ndipo mwachangu zikuchulukirachulukira. Kuposa zaka mamiliyoni mazana asanu iwo ankakhala mu kuya ndi mdima wambiri zamkati mwa nyanja. Tsopano iwo touluka m'malo zosiyanasiyana za moyo ndi kuwononga zinthu zachilengedwe zochititsa m'madzi. Inde, mukuwerenga kulondola, m'nkhani ino tikambirana za zolengedwa wokongola, zamatsenga ndi kuimfa - modabwitsa. Ngati inu kuwonjezera zina limatchula - kuulula chophimba mwachinsinsi ndi kukuuzani inu za mmene awonjezere modabwitsa.

chilengedwe zodabwitsa za chilengedwe kapena wakupha ankhanza?

Ambiri amaganiza zolengedwa otetezeka kwathunthu modabwitsa. Koma izo siziri choncho! Iwo - ogwirira zoopsa zomwe kudyetsa anthu okhala nyanja (nkhanu zosiyanasiyana, zooplankton, caviar, etc ...). Medusa ntchito chida kuimfa - tentacles awo - kuti apeze chakudya. Kodi mukuganiza kuti tentacles awa ali bwino kwathunthu kwa anthu? Ndithudi ayi. maselo obaya, amene pa iwo, pamene anakumana ndi khungu anthu yatsala amayaka chopweteka. Koma izi si koipa. Pali kawirikawiri mitundu modabwitsa, kukhudzana ndi tingayambe imfa. Zikuphatikizapo nyanja mavu, Chipwitikizi ngalawa ndi Nomura modabwitsa.

Monga kale inu kuti, modabwitsa si vuto lililonse ngati zikuoneka pa koyamba. Mukaikire izi? Monga umboni, ife kubweretsa zinthu zimene zidzachitike mu Japan kwa zaka zoposa 10. Japanese gombe chifukwa zonse osefukira modabwitsa Nomura wakhala zone akufa. ndi chifukwa cha ntchito zonsezi? Tinkadabwa funso lomwelo, ofufuza ku University Hiroshima. Kuti tipeze chimene chinali kuchitika, ine ndinali kumvetsa ndi kudziwa mmene modabwitsa odana. Koma tsopano asayansi Japanese kudziwa motsimikiza kuti ponena anali likutentha. Ine ndiribe lingaliro mmene kuwuka kutentha chifukwa cha kuchuluka kwa modabwitsa? Kuti timvetse zimenezi, m'pofunika wofufuza chikhalidwe cha zolengedwa, amaphunziranso kawetedwe modabwitsa. Zimenezi zingakuthandizeni m'nkhani ino.

Kawetedwe modabwitsa?

Amuna kutulutsa umuna, mkazi - dzira. Pa maphatikizidwe wa umuna ndi dzira maselo anapanga planula, zakhazikika pansi. Ndi chiyani icho? Planula, kapena, kwambiri mwachidule, larva - gawo la kayendedwe ka moyo wa nyama zina. Monga ulamuliro, pa chitukuko cha mphutsi atengeke metamorphoses zosiyanasiyana ndi kusinthika. Choncho, planula modabwitsa kwasanduka polyp amene ali kazembe wa m'badwo asexual. Pamene polyp ukufika kukhwima kwa iye ikuphukira zolengedwa achinyamata kuyamba kuchokamo.

Kayendedwe ka moyo ndi modabwitsa metagenesis. Mukhoza kudziwa ku sukulu zamoyo ndithudi, ndi mawonekedwe a kayendedwe ka moyo, umene ndi wa chibadidwe nyama zina. Metagenesis zomwenso kwagona mibadwo asexual mibadwo kuti kubereka pogonana, nthawi zonse ina.

Kufotokozera modabwitsa kuswana, mitundu

Monga kale tafotokozazi, modabwitsa kwambiri kubereka pogonana. Komabe, ambiri - kuti si zonse. Mu chikhalidwe, pali mitundu kuti kubereka budding. Dziwani zambiri za iwo mungathe mu gawo ili la nkhaniyi.

Ena mitundu hydroid medusae akhoza kuchulukitsa ndi kugawikana yopingasa kapena budding. Hydroid modabwitsa - yaing'ono (masentimita atatu) Nyama ndi tentacles, ang'ono campanulate ambulera ndi yaitali Zikuluzikulu mouthparts. Mwina kalasi imeneyi ya Hydrozoa ndi mapeto. Cacikulu hydroid modabwitsa ofanana kwambiri ndi anzawo. Iwo amagwiritsidwa ogwirira kudyetsa makamaka nkhanu ndi zayamba kapangidwe chomwecho ndi zina zotero. Kusiyana komwe kulipo ndi mu njira kubalana.