<prompt> Manubriosternal joint is -Primary cartilaginousSecondary caritilaginousSynovialEllipsoid  <response>: Ans. is b i.e., Secondary cartilaginous o Costochondral stemochondral joints are primary cartilaginous joints.Cartilaginous joints1 Primary cartilaginous joints synchondrosis, or hyaline cartilage joint : These are :-Joint between epiphysis and diaphysis of a growing long bone, i.e. physis.Spheno-occipital joint1st costostemal joint 1st chondrosternal jointCostochondral joints2 Secondary cartilaginous joints Symphyses or fibrocartilaginous joints : These are :-i Symphysis pubisiii manubriostemal jointv Symphysis mentiii Sacroccygeal jointiv intervertebral disc 