Dabbobi masu rarrafe

Wadatacce

• Kaura da dabbobi masu rarrafe
• Ciwon rarrafe
• Misalan dabbobi masu rarrafe

Ma'anar sifa 'mai rarrafe ' yana da alaƙar kai tsaye da kalmar 'ja ruwa ', kuma idan ana amfani da shi akan dabbobi yana magana akan waɗanda ke tafiya a ƙasa, wato akan sa.

Kodayake wasu suna amfani da manufar har ma suna magana game da tsuntsayen da ke tashi ƙasa ko a matakin ƙasa, ainihin ma'anar rarrafe dabbobi shine na dabbobi masu rarrafe. Ma'anar kuma ta kai har zuwa filin tsirrai, tunda tsire -tsire masu rarrafe sune waɗanda ke shimfiɗa tsayin su a ƙasa.

Kaura da dabbobi masu rarrafe

Dabbobi da ke rarrafe galibi ana alakanta su da rukunin masu rarrafe, waɗanda motsin su ya dogara da jan jiki, fi'ili wanda ya ba da sunan sa daidai ga rukunin dabbobi masu rarrafe. Duk da haka ba duk masu rarrafe suke rarrafe ba, tunda dabbobi da yawa suna motsawa ba tare da kasancewa cikin wannan rukunin ba: ban da rarrafe, dabbobi masu rarrafe dole ne su kasance suna da sifar fata, bushe, keratinized da fata mai kauri.

Maimakon haka, dabbobi masu rarrafe ƙungiya ce ta cikin masu rarrafe, wanda a ciki kuma ana buɗe nau'ikan daban -daban: wani muhimmin sashi na dabbobi masu rarrafe yana da ƙafar tsokoki huɗu da wutsiya waɗanda ke taimakawa daidaitawa, waɗannan su ne dabbobi masu rarrafe waɗanda ba sa rarrafe a koyaushe amma suna da Yiwuwar, lokacin da suke buƙatar motsawa cikin sauri, don tashi akan ƙafafun su kuma ɗaga ciki gaba ɗaya daga ƙasa.

Wani nau'in dabbobi masu rarrafe, daga ciki akwai maciji a matsayin misali mafi bayyane, ba ta da gabobi kuma tana iya rarrafe kawai. Waɗannan dabbobin dole ne su kasance masu ƙarfi da ƙarfi da ƙwarewa sosai don daidaita yanayin, don su iya yin tsayayya tare da iyawar motsawa ta wannan hanyar.

Ciwon rarrafe

The kauracewa wasu invertebrates Kamar tsutsotsi, ya ginu ne akan cewa wani sashi na jiki yana kumbura ta hanyar tafiyar da jiki baya da baya: wannan kumburin yana samuwa ne daga jakar muscular da zata iya fadada ko kwangila. Wannan rukunin ƙungiyoyi ana kiransa peristaltic, kuma ya zama ruwan dare ga duk annelids.

Wani lamari na musamman shine na dodunan kodi, wanda aka daɗe ana tunanin saboda slime yana da shi, yana iya samar da ingantacciyar hanyar motsi. Sabanin haka, ƙarin binciken da aka yi kwanan nan ya tabbatar da cewa ƙaurawar katantanwa ana bayar da ita ne ta ƙungiyoyin muscular na peristaltic da ke faruwa a cikin jiki.

Kullun na ci gaba ba tare da yin amfani da karfi akan takamaiman wurare ba, amma ta hanyar rarraba ƙaramin ƙarfi akan babban yanki. To, abin da ke mannewa, shi ne abin da ke ba shi damar motsi cikin sauƙi, amma ba shi ne tushen ikon motsi ba wanda yanayinsa ya ba da shi azaman annelid.

Anan akwai jerin dabbobin rarrafe ciki har da masu rarrafe da annelids.

Misalan dabbobi masu rarrafe