Class 11 NEET Biology Structural Organisation in Animals

(b) : In adult frog, gills disappear and their skeletal framework is also reduced to form hyoid apparatus. It lies below tongue in the floor of mouth and provides surface of attachment to the tongue. Pterygoid contributes to the postero-ventral margin of orbit of its side. Palatine connects the anterior side of cranium with the middle of maxilla, Parasphenoid forms floor of the cranium.