Q. In frog, the vertebra with an anterior convex surface (i.e., double convexties) is

 2286  190 JIPMERJIPMER 2004 Report Error

Solution:

The 9th or sacral vertebra is acoelous and highly specialised the anterior face is convex for this give greater strength them, it would be given if its anterior end are hollowed out the transverse process are stout and downwardly directed. The ileum of the pelvic girdle articulates with the transverse process of 9th vertibrae.