Kwaro

Invertebrate dabbobi - yawa wakilan fauna da cewa ba su da wani kashin. Wannan category hada protozoa (single-celled), ƙananan tsutsotsi, Sponges, arthropod, mollusks, echinoderms, da sauransu. A cikin duka, wannan rukuni na goma sha shida iri.

Da rabo daga cikin dabba mulki a vertabrate da kwaro Lamarck gane a 1801. Daga cikin vertabrate da aka sani game da arba'in da biyar dubu jinsunan. Sananne kwaro ba a wani adadin miliyan 1 da dubu 260 jinsunan. A wannan yanayin, mafi sauki - game da ashirin da dubu biyar, Sponges - game da biyar, ƙananan tsutsotsi - game da ashirin, mollusks - fiye da dari, arthropod - game da saba'in da tara da dubu jinsunan.

A mafi girma yawan jinsunan kwari suna gabatar. Sun kasance sũ ne game da miliyan. A wannan yanayin, na cikin ruwa kwari ne da yawa umarni. Ya kamata a lura cewa wasu daga cikinsu ne ba a cikin ruwa kawai a lokacin da larval lokaci. Duk da yake wasu suna da shi ga rayuwa. Coelenterates dabbobi yana da game da dubu tara jinsin. Ya kamata a lura da cewa data kasance iri a cikin yanayi yawa fiye da shi ne da aka sani. Bugu da kari, da dama dubu m kowane shekara ta sababbi.

Kwaro zauna cikin ƙasa, teku, tekuna, da waɗansu kõguna, tabkuna, tafkunan. Mutane da yawa wakilan ne parasites. A wannan yanayin, su ne parasitic a kan dabbobi, da kuma a kan shuke-shuke.

Rawar da kwaro a cikin yanayi ne quite manyan. M sharan Wakilai, wanda ya rayu a farkon ma'aunan kasa lokaci, zama abubuwa na kankara, da kuma a wasu lokuta - na girma. Alal misali, skeletons na invertebrate dabbobi, dadaddun, kusan gama yin sama farar ƙasa.

Bambancin muhimmancin wannan kungiya da kuma ga kowane mutum. Alal misali, mutane da yawa kwaro, kazalika da sharar gida kayayyakin amfani da shirya abinci ga mutane (zuma, misali). Mutane da yawa wakilan amfani ga ciyar da kasuwanci kifi, dabbobi, da tsuntsaye. Lu'ulu'u, bawo na mollusks, beeswax , kuma da yawa wasu wakilan kungiyar na invertebrate dabbobi halin da sharar gida kayayyakin al'amurran tattalin arziki da fasaha darajar. Su sukan yi amfani da kwaro iko. Kwaro ne da yara da kuma parasites, don ya hallaka su. Wannan hanya da dangantaka da nazarin halittu hanyoyin da kwaro iko. Geologists a kayyade da shekaru sedimentary kankara yayi nazari ragowar burbushin halittu sun.

Duk da haka, a cikin yanayi, akwai mai yawa na cutarwa da wannan kungiya. Mutane da yawa kwaro ne dako na parasitic da kuma dauke da kwayar cutar pathologies, kwari na hatsi da ta kayayyakin. Suna iya zama mai guba da kuma haifar da lalacewar amfanin gona, da dai sauransu dazuzzuka

A musamman wuri a cikin ƙungiyar dauki coelenterates. A kwatanta al'ada nuna gaban radial fasali, da kuma biyu jam yadudduka (ectoderm da indodem). Kullum wannan yana dauke da cewa dabba jiki kafa daga biyu epithelial yadudduka: integument (epidermis) da kuma a cikin rufi da hanji lumen (gastrodermisa). Tsakanin yadudduka located connective gelatinous Layer (mesoglea). A da tsarin ƙunshi collagen zaruruwa da amoeboid Kwayoyin a cikin wani karamin adadin.

Mun wakilan coelenterates ba musamman numfashi gabobin da tukar tumbi. A mafi yawa ana hade da wani biyu-Layer tsarin da ginin, wanda ya samar da lamba daga mafi sel epithelia da waje muhalli.

Domin coelenterates halin da underdeveloped juyayi tsarin. Mai jima'i karbe da kuma halin da rarrafe ko planktonic larvae.