The embryonic skeleton of all vertebrates is made of ____.
A)yellow bone marrow
B)elastic tissue
C)loose connective tissue
D)cartilage
E)muscle tissue

Question

Quizplus · Accepted Answer

The embryonic skeleton of all vertebrates is made of cartilage. As the embryo develops, it is gradually replaced by bone tissue through a process called ossification, which begins in the center of most bones at about six weeks after fertilization. This process continues throughout childhood and adolescence.

The Embryonic Skeleton of All Vertebrates Is Made of ____