MICROANATOMY

Detailed explanation-1: -Eventually, all the cartilage is replaced by bone. Thus, the cartilage tissue serves as a model for the bone that follows. The skeletal components of the vertebral column, the pelvis, and the limbs are first formed of cartilage and later become bone.

Detailed explanation-2: -So, the correct answer is ‘Bones’.

Detailed explanation-3: -Cartilage serves as a precursor to endochondral bone, forming almost the entire embryonic skeleton. Although bone gradually replaces cartilage during further development, cartilage persists until adulthood in the growth plates within bone, that allow lengthen during the growing years.

Detailed explanation-4: -It occurs in vertebrate skeletons by replacement of cartilage templates. The process of endochondral ossification evolved gradually, starting with perichondral bone deposition using the molecular tools that had evolved during the evolution of bony shields in the skin.