Q. Proportion of which of the following should be increased in diet improve strength and growth of bones?
A) Vitamin-D, $Ca^{2 +}$ and vitamin-K
B) Vitamin-D, $Ca^{2 + \ }$and iodine
C) Vitamin-D, $Ca^{2 +}$ and vitamin-A
D) Vitamin-A, $Ca^{2 +}$ and $Zn^{2 +}$
Explanation
Vitamin-D affects normal growth of body and formation of teeth and bones by depositing essential minerals in them. Vitamin–A is essential for maintenance of epithelial cells and bones. There is correlation between Vitamin-A and tooth development. Calcium is essential for formation of bone and teeth.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.