Bone matrix is very hard because of:
AIron salts
BSodium salts
CCalcium salts
DChondroitin
Answer & Solution
Correct answer: C. Calcium salts
1. Bone and cartilage are both connective tissues.
2. Cartilage is pliable because of chondroitin salts.
3. Bone is hard because of calcium salts.
_Source: NCERT Class 11 Biology, Chapter 20, Locomotion and Movement._
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