Thank you for reporting, we will resolve it shortly
Q.
Bird vertebrae are
AIPMTAIPMT 1988Animal Kingdom
Solution:
Bird vertebrae are heterocoelous i.e., the centra of vertebrae have saddle - shaped ends. Acoelous refers ! to vertebrae that are flat on both ends (mammals). Amphicoelous means both ends of the centrum are concave (fish). Procoelous means concave in front and convex in back (anurans and reptiles).