Comparative Anatomy of Amphibians: Characteristics of Characters Apoda, Urodele, Anura, Study notes of Zoology

Download Comparative Anatomy of Amphibians: Characteristics of Characters Apoda, Urodele, Anura and more Study notes Zoology in PDF only on Docsity! CHARACTER APODA URODELA ANURA Other Name Gymnophiana Caudata Salientia / Batrachia Common Names Caeciclians / blind worms Salamanders & newts Frogs & toads Habitat Terrestrial / fossorial moist sand burrows Amphibious Amphibious Body Shape Slender, snake like Long, narrow, lizard like Short, broad Body Division Head, trunk Head, trunk, tail Head, trunk Scales Minute cycloid, embedded in skin Absent Absent Limbs, Limb Girdles Absent Weak, 4 Pentadactyl, Equal In Size Hind Limbs Large To Leap, Jump, Swim Skin Numerous grooves present Smooth, moist, glandular Smooth. Skull Compact, roofed by bone Compact Vetrebrae Amphicoelous Amphicoelous, Opisthocoelous In Salamanders Less In Number, Procoelus Sternum Absent Poorly Developed Present Teeth On both jaws On both jaws On upper jaw / absent Cloacal Aperture Nearly terminal Not terminal Terminal Gills Absent in adults Some adults have external gills Absent Lungs Asymmetrical Symmetrical Symmetrical Ductus Botali Present Present Absent Eyes Small, reduced, non functional Small, Large Eyelids Absent Present In Land Forms Well Developed Middle Ear Absent Absent Present Vocal cords absent absent present Copulatory Organ Cloacal wall acts as. Protrusible Absent Absent Eggs Large Small Small Fertilization Internal Internal External Development Direct / indeirect Indirect Indirect Examples Ichthyophis, Gegenophis Amblystoma, Necturus, Proteus Rana, Bufo. Hyla