Nyorai Coelenterates: vamiririri. The chikuru STRUCTURAL zviri vamiririri coelenterates

Nhasi tiri zvaizobatsira ichi boka remhuka, sezvo coelenterates. Representatives, STRUCTURAL features, kudya kunovaka, kubereka uye kufamba emhuka idzi - zvose izvi uchadzidza nokuverenga nyaya. Zvakafanana maruva gungwa anemones, achiumba yakakura matombo pasi mvura korari uye läpinäkyvä umbellate muramba ndezvimwe zvezvisarudzo kukwezva vagari munyanza. Pasinei vakasiyana mumwe, mhuka idzi, vose - coelenterates. Vamiririri boka iri vakawanda. Kune zvinopfuura 9000 mhando hwemvura zvipenyu vaigara mvura kunyanya kudzika.

What dzinobatanidza coelenterates

Feature unokubvumira kureva korari muramba uye Freshwater hydra coelenterates kuna - ndiyo pamberi vakawanda zvomudumbu (gastric) mhango pakati muviri. izvi mhuka muviri chakaumbwa concentric akaturikidzana vemapoka sero kuti vanoumba chinyakare munyama umo masero kushanda zvakanyatsobatana sezvo zvikamu rwose, pane akazvimiririra zvinhu muchitokisi masumbu, sezvo kuchengetwa sechipanji. Coelenterates - vamiririri mhuka yenyika, uyo akatanga kusvika kwakadaro pamwero sangano iri shanduka manera, uye ivo vose vane kufanana marongerwo uye nzvimbo yacho tishu.

Nyuchi uye woga zvinenge

Sea anemones, gungwa anemones kana - mhuka kuroorwa uye chirimwa zvakafanana Obelia (yaifananidzira pamusoro) anoumba muhutongi anoverengeka zana vanhu, polyps. In Kana apo polyps vakasiyana mumwe, vanotaura pamusoro polymorphic dzaitongwa. Vamwe yaitonga zvomumvura coelenterates - vamiriri mubereko kwatiri mhando umo mune munhu polyps zvokudya, kudzivirirwa uye kubereka, uye dzimwe nguva kuti Resettlement.

Saka, isu anozotsanangura nepaduku mhuka idzi. Zvino kuti une vamwe pfungwa vavo, isu zvamaronga kuti funga chikuru zviri vamiririri Coelenterata mhando mamiriro.

Sechivako coelenterates

Mukanwa, akapoteredzwa tentacles whisk akatakura masero anopedza, anovhura zvakananga kupinda zvomudumbu mhango. The muviri rusvingo kusiyanisa rokunze layer kana ectoderm, kure kubva womukati (endodermal) munhu gelatinous rukoko - mesoglea. Anogona bereka nokuda yotunga kana pabonde vamiririri coelenterates. Uye mienzaniso vaviri nzira tichiri chipo kana kutaura zvakawanda pamusoro maberekero. Dzisingaoneki uye mazai vari achiumbwa nhengo mukono nehadzi pabonde nhengo.

Vamiririri Kirasi vari Coelenterata nematotsity. Zviri chombo remhosva uye enhare mhuka idzi. Vamwe vavo vari chakaunzwa akuvara chaunombotya muchetura, vamwe secrete munhu namuka fuma, vamwe kupotsera entangle mutsvuku. Pane imwe kuguma sero inonyatsoziva bvudzi, anoita somunhu chikungiso. Kana mhuka unobatwa nechikepe apfuura kwaari, nematotsit awo. vachiridzira mashandiro haisi pachena zvachose, asi ari vakatenda inobatanidzwa unopinza yakawedzera mvura nevezera ari Kamudzira. Mumwe nematotsit vachiridzira kamwe chete, ipapo kuraswa.

Makuriro Danho

Ichitanga pokumuka coelenterates zhinji kuona dzakasiyana maviri matanho: free- (medusoid) danho kutamira uye danho achabatanidza vanogara uye kukura. Izvi zvinoreva kuti mamwe marudzi anogona nokugaramo zvose pasi akaturikidzana, uye pakukora penyanza. Asi ivo vakatonga kana mumwe kana rimwe danho, iro rinotsanangura akasiyana-siyana siyana coelenterates boka.

Pana Obelia, semuenzaniso, medusoid nhano ndedzoupenyu pfupi nguva, zvichiteverwa refu-ndakagara zvakabatanidzwa, uye chaiwo kutenderera nokuda pokumuka coelenterates Hydrozoa boka. Paaizosvika kukura, Obelia Colony aindiumba dzakananga siyana polyps, izvo zvibereko muramba. In boka Scyphozoa zvasiyana: akatonga medusoid Danho pano. Kirasi wechitatu coelenterates - Anthozoa, izvo zvinosanganisira korari uye gungwa anemones (yaifananidzira pamusoro), kuda Panguva zvose displaces medusoid. Mumapoka aya ose, mazai uye urume kubva gonads vachawira riri zvakananga zvimwe zvikamu endodermal lining ari gastric mhango uye achishandisa muromo vari vabudiswa.

Kubva mazai nourume kuva mazana, izvo rinopedza kuti pasi uye kuva itsva munhu. Asi pane marudzi, kunyanya pakati Hydrozoa, basa neizvi. Somuenzaniso, nhengo genus Hydra (mumwe wavo unogona kuona mufananidzo pamusoro) haana medusoid Danho uye mararamiro avo nowenyika anemones, asi kuti dzisingaoneki kwavo uye mazai kuva kunze, panzvimbo mukati polyp. Uye ipapo, nekusiyana, avo mhando pazviri kunodzora medusoid pachikuva, uye pavaipfuura polyp kana zvakasimba nevabereki kana vasiri aripo.

agamobium

Ichienzaniswa kunzwisisa Misiyano pabonde kubereka, asexual zvinenge izvi zvinoita nyore chaizvo urongwa. Somuenzaniso, mumwe mumiririri coelenterates mhuka, kufanana Hydra, dzikaumba vanhu vatsva kuti ichatungira kubva mubereki chimiro. Izvi zvinoratidzwa mufananidzo pazasi.

Asi anemones nyore kuparadzaniswa hafu. Asexual kupararira kungakonzera nokuumbwa nyuchi kubva wacho polyps zvabatanidzwa zvachose gastric mhango.

Kugona bereka asexually cnidarian nzira, uyezve, kuti vava nyore kuti panoda. Zvechokwadi, kunyange chiduku chigamba chingangodaro kuva kuva munhu mutsva uyo anonyatsokwanisa dzepabonde kubereka.

Power coelenterates

Most coelenterates zvokudya kunobatsira tentacles dzakapoteredza muromo. Norupo rakazara masero anopedza (nematotsitami), tentacles izvi sei kugadzirwa uye sungisa nayo. Kuwadzana mumwe, ivo dzine kufukidza zvokudya uye kuchirwisa kupinda gastric mhango. Zvadaro, muromo yapera uye endoderm masero secrete kupinda gastric mhango zvomudumbu makemikari. Extraction makemikari rinonamatira, kana akatendeuka nayo ive nyore kutombozivikanwa muchiKristu mvura zvigadzirwa, kana mune slurry pamusoro nezvimedu duku kuti anogona richatorwa endoderm masero. Undigested zvokudya residues vanobviswa muviri unocheka nepakati muromo ajar.

Kugona kutama

coelenterates All kufamba, kunyange zvazvo izvi inogona kungoitirwa kuti perturbation pakati tentacles, uye kuchinja muviri chimiro. Movement coelenterates zvakaitwa kubudikidza tsandanyama fibers. Ndivo zvose ectoderm uye endoderm. Uyezve, actinium nechigadziko Anotsiva inopiwa ne tsandanyama fibers, vachibvumira mhuka idzi kufamba pasi. Zvinoita sokuti vakanga Vaiisa pamusoro payo. Hydra anokwanisawo kutama nenzira iyi, asi chinoita nokukurumidza tichiregeredza rudzi "tumbling". Kunyange nyore coelenterates sangano zvinoda mumwe Kufambisa. Kufambisa ichi unotakurwa diffuse richikurukura masero etsinga rakapinza mhuka rinenge uye pakudaro achiumba chinyakare tsinga.

Saka, isu anozotsanangura nepaduku kuti mhando Coelenterates. Vamiririri nayo sezvaungaona, siyana chaizvo munzira dzakawanda, zvichiita boka iri zvipenyu rinonyengerwa dzinonakidza.