Mene ne radial fasali? Abin da dabbobi suna da radial fasali?

Kawai wasu dabbobi ba ya faruwa a wannan duniya tamu! Wasu buga su size, wasu m halaye da kuma hanyarsa ta rayuwa, wasu bambanta m launi.

Amma mafi daukan hankali na jiki tsarin ne har yanzu teku, da kuma teku da mazaunanta. Jikinsu siffar iya zama sosai m saboda shi yana da musamman fasali uncharacteristic domin nazarin sasannin dabbobi. Wannan radial fasali.

Iri fasali a dabbobi

All dabbobi a iri fasali na jiki za a iya raba hudu kungiyoyin:

• Animals tare da hadin fasali (dvustoronnesimmetrichnye). Wannan kungiyar hada da mafi jinsunan terrestrial dabbobi, da kuma wani gagarumin ɓangare na teku. Babban alama - shi ne wurin da jiki na gabobin symmetrically tare da girmamawa ga wanda za'ayi ta hanyar jirgin sama. Alal misali, hagu da kuma gefen dama na jiki, da mayar da gaba.
• Radial fasali na jiki (radial fasali). Halayyar dabbobi marine da kuma teku zurfin. Babban alama - tsarin da jiki a cikin irin wannan hanya da cewa, ta hanyar da tsakiyar axis iya ciyar da 'yan hasashen Lines game da sassan jikin ana shirya symmetrically. Alal misali, ta bugo daga tarwada.
• Animals da asymmetric siffar jiki. Lokacin da fasali ba hankula a duk, da siffar da aka kullum canja dangane da muhalli da yanayi ko daga motsi na dabba. A misali - Amoeba Proteus.
• A rashin fasali gaba daya. Wadannan kwayoyin suna Sponges. Suna a haɗe hanyar rayuwa, za a iya girma a kan wani substrate at daban-daban kundin da ba su da wani fasali a cikin tsarin da jiki.

Kowace kungiya na kwayoyin da aka jera ya'ya wa kansa wasu amfana daga tsarinta. Alal misali, dangantakar dabbobi iya matsar da yardar kaina dama, juya a kaikaice. Animals da radial fasali iya kama ganima daga kusurwoyi mabambanta. Asymmetric kwayoyin m hanyar motsa da kuma daidaita da muhalli da yanayi.

Radial fasali: shi

Babban alama na dabbobi da radial fasali, shi ne su sabon abu jiki siffar. Suna yawanci Dome-dimbin yawa, cylindrical ko a cikin siffar wani star ko a duniya.

Ta hanyar jikin kwayoyin za a iya za'ayi da yawa daga cikin gatura game da kowane daga cikinsu akwai biyu gaba daya tsakaitã halves. Irin wannan tsari yana ba su damar da za su yi wani yawan abũbuwan amfãni:

1. Su ne free to motsa a wani shugabanci, iko duka bangarorin kewaye da shi.
2. Farauta zama ya fi girma masu girma dabam, tun samarwa da aka ji a kusa da dukan jiki.
3. A sabon abu siffar jikin sa ya yiwu don daidaita da kewaye faɗi, zuba a cikin shi kuma ya zama marar-ganuwa.

Radial fasali na jiki - daya daga cikin manyan kayayyakin aiki, don takamaiman azuzuwan dabbobi teku muhalli al'umma.

Halaye na radial fasali na jiki

A tarihin abin da ya faru na irin wannan na'urorin, kamar radial fasali na jiki, ya bi sawun saiwoyinsa zuwa cikin magabatan dabbobi Coelenterata irin. Sun kasance sũ ne gaba daya masu zama a gida, tsit rai da aka haɗe zuwa substrate. Su za ta amfana daga irin wannan fasali, da kuma suka yi mata a farko.

Gaskiyar cewa yanzu mutane da yawa rayayye yin iyo dabbobi har yanzu da radial fasali, tattaunawa game da ita neredutsirovannosti a cikin shakka daga juyin halitta. Duk da haka, ta kai tsaye manufa, wannan alama da aka daina yin.

Ma'ana radial fasali

Its main nufi a cikin kakanninmu siffofin, kazalika da zamani, manyan kulla rayuwa - samar da kariya daga hare-haren da yara da kuma ganima abinci.

Bayan duk, dabbobi da radial fasali, sun kasa kare kansu, a kubuta daga wani predator, kuma ba su iya boye. Saboda haka, kawai zaɓin da ya ji da kariya daga m hadari daga duk wani sashi na jiki zuwa amsa da m sunadaran.

Bugu da kari, tãrãwa su rai when're a sedentary salon, shi ne quite wuya. A radial fasali ba ka damar kama wata 'yar alamar abinci kafofin kewaye da dukan jiki da kuma sauri amsa su.

Saboda haka, radial fasali na jiki na samar da wani musamman muhimmanci tsaro sunadaran, da kuma abinci ga dabbobi da shi.

misalai na dabba

Akwai misalai masu yawa na dabbobi da radial fasali. Su babbar bambancin da jinsin da kuma na lamba ado da wani teku, da kuma teku kasa da kuma ruwa shafi, damar da mutum zuwa sha'awan da intricately yanayi da kyau na karkashin ruwa duniya.

Abin da dabbobi suna da radial fasali? Alal misali, kamar:

• tẽku urchins.
• jellyfish.
• tẽku cucumbers.
• gaggautsa.
• zmeehvostki.
• hydra.
• tarwada;
• Ctenophora.
• tsayayyen polyps.
• wasu jinsunan Sponges.

Wadannan sun fi na kowa misalai na radial fasali na jiki a cikin dabbobi. Akwai sauran dabbobi, karami da aka sani, kuma, watakila, duk shi ne ba tukuna bude, wanda aka halin da irin wannan fasali na wani tsarin mulki.

coelenterates

Wannan irin dabbobi hada da uku main azuzuwan, sananniyar alama na wanda aka wakilta da cewa su ne dukan dabbobi da radial fasali. A rayuwa hawan keke mamaye wani free-iyo medusa mataki, ko mataki na wani polyp a haɗe zuwa substrate. Hole daya, da aiki da na baka, tsuliya da kuma jima'i. Don kare amfani guba harbin Kwayoyin.

1. Hydroids. Babban wakilan: da hydra, hydrants. Suna a haɗe rayuwa ne kamar duk coelenterates, biyu yadudduka a cikin tsarin da jiki: da ectoderm da indodem. A core Layer ne mai gelatinous na ruwa abu abun da ke ciki - mesogloea. A jikin siffar ne mafi sau da yawa kofin-dimbin yawa. Babban ɓangare na rayuwa da aka kashe a cikin mataki na polyp.
2. Jellyfish (scyphoids). Key wakilan - duk irin jellyfish. m jiki siffar, a cikin wani nau'i na kararrawa ko Dome. Su ma dual-Layer dabbobi da radial fasali. Babban ɓangare na rayuwa da aka kashe a mataki na yardar kaina motsi jellyfish.
3. Coral (polyps). Babban wakilan: anemones, murjãni. Babban alama - mai mulkin mallaka salon. Mutane da yawa murjani reefs samar da cikakke na ta mazauni mazauna. Single siffofin ma faruwa, wadannan su ne daban-daban na teku anemones. Stage jellyfish kullum ba na hali na wadannan dabbobi, kawai mataki polyps.

A duk akwai game da 9000 jinsunan membobin wannan irin dabba.

echinoderms

Har ma da wasu dabbobi da radial fasali? Hakika, sanannen da kyau sosai, sabon abu da kuma haske echinoderms. Wannan irin kunshi game da 7000 jinsunan wadannan ban mamaki marine rayuwa. Akwai biyar manyan azuzuwan:

• Sea cucumbers - kama tsutsotsi, amma har yanzu suna da wani radial fasali. Mai Launin, su ne m don motsawa a kan seabed.
• Gaggautsa taurari - reminiscent na teku taurari, amma da hakan motsi da kuma talauci canza launi - fari, madara da kuma m launuka.
• Sea urchins - zai iya samun daidai allura waje kwarangwal, ko ba su da allurar. A jikin siffar ne kusan ko da yaushe kusa da siffar zobe.
• Tarwada - biyar, takwas, ko goma sha biyu-dabbobi tare da wani karfi radial fasali. Sosai da kyau fentin, rayuwa ne masu zama a gida, rarrafe a kasan shafin.
• Crinoids - zaune kyau dabbobi, da radial siffar furen. Za a iya rabu da substrate kuma su matsa zuwa wani wurin arziki abinci.

Salon iya zama m don haka a haɗe (tẽku Lily). A jikin wani biyu-Layer, baka rami, kuma ya aikata aikin tsuliya jima'i. Exoskeleton karfi isa lemun tsami, da kyau yi wa ado da m alamu.

The larvae na wadannan dabbobi suna da hadin fasali na jiki, da kuma kawai manya doraschivat haskoki su radial.

Ctenophora

Sau da yawa kananan size dabbobi (har zuwa 20 cm) a cikin abin da cikakken fari, translucent jiki, ado da layuka na combs. Wannan irin dabba da aka dauki daya daga cikin mafi tsoho. Tsefe jelly da yara ciyar a kan crustaceans, da ƙananan kifaye kuma ko da juna. Very m kiwo.

A tsarin da jiki akwai wata uku tayi ganye. A bakin bude a kan babba sashi na jiki, abu don taso kan ruwa da yardar kaina salon. The fi na kowa iri ne:

• Beroe.
• platiktenidy.
• gastrodes.
• Venus abin ɗamara.
• bolinopsis.
• tyalfiella.

Su radial fasali, kazalika da radial fasali na wasu coelenterates jinsunan talauci bayyana. jiki dimbin yawa kamar wani m, ko wani jakar.

hakan

Saboda haka, radial fasali na jiki - shi ne prerogative na cikin ruwa dabbobi, abu mai sedentary salon, ko a haɗe zuwa ga masu kuma ba a yawan abũbuwan amfãni a cikin farauta domin ganima da kubuce da yara.