What gives bone its rigidity and strength?

Practice MCQ for SSC, UPSC, RRB Exams

A. Collagen A.
B. Calcium phosphate B.
C. Bone marrow C.
D. Red blood cells D.

Correct Answer: B সঠিক উত্তর: B

Explanation ব্যাখ্যা

Calcium phosphate makes bones hard and strong, while collagen provides flexibility.

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