Download - Bezrepi vodozemci
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Bezrepi Bezrepi vodozemcivodozemci
Sistematika:Sistematika:Carstvo: zivotinjeCarstvo: zivotinje
Tip: hordatiTip: hordatiKlasa: vodozemciKlasa: vodozemci
Red: AnuraRed: Anura
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• Karakterise ih poseban nacin kretanja: -skokovi na kopnu -plivanje(ronjenje) u vodenoj sredini
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• Morfoloske promene koje prate ovakve oblike kretanja su redukcija repnog regiona i izduzivanje zadnjih ekstremiteta
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• Odlikuje ih jedan prsljen preko koga se lobanja zglobljava sa kicmenim stubom, kao i jedan krstacni prsljen
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• Postoji jedinstvena komora u srcu, za bezrepe su karakteristicne prostrane potkozne limfne kese
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• Kod vecine postoji fizicki kontakt,iako je oplodjenje spoljasnje
• Oviparija je dominantan nacin reprodukcije
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• Metamorfoza je posebno izrazena kod bezrepih vodozemaca kada punoglavci odbacuju rep, formiraju ekstremitete I potpuno menjaju sistem organa za varenje prelazeci iz vodene u kopnenu zivotnu sredinu
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• Nastanjuju razlicita stanista, imaju skoro kosmopolitsko rasprostranjenje
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