Question

Read the assertion and reason carefully to mark the correct option in question.
Assertion: Bone has a very hard non-pliable matrix while cartilage has slightly pliable matrix.
Reason: Bone has calcium salts while cartilage has chondroitin salts.

• A. If both assertion and reason are false.
• B. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• C. If assertion is true but the reason is false.
• D. If both assertion and reason are true but the reason is not the correct explanation of the assertion.

Answer 1

The correct option is B If both assertion and reason are true and the reason is the correct explanation of the assertion.

Assertion-Reason relation
Bone and cartilage are two specialised connective tissues.
Bones are hard structures which form the framework of the body. It has a non-pliable matrix. Cartilage is a flexible connective tissue which has a slightly pliable matrix.
Hence, the given assertion- “Bone has a very hard non-pliable matrix while cartilage has slightly pliable matrix” is correct.
Bone has a non-pliable matrix as it is composed of a major fraction of calcium salts, while cartilage has slightly pliable matrix as it composed of chondroitin salts.
Hence, the given reason- “Bone has calcium salts while cartilage has chondroitin salts” is true and is the correct explanation of the given assertion.
Final answer
(A) If both assertion and reason are true and the reason is the correct explanation of the assertion.