Assertion :Cartilage and bone are rigid connective tissues. Reason: Blood is a connective tissue.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is incorrect but Reason is correct.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Assertion: Cartilage and bone are rigid connective tissues
Connective tissues, as the name implies, support and connect different tissues and organs of the body. The cells of connective tissue are loosely scattered in a matrix.
The matrix can be a fluid, dense or jelly-like substance. The nature of the matrix depends on the function of connective tissue.
Cartilage and bone are specialized forms of connective tissue.
Bone cells (osteoblasts) are embedded in a hard/rigid matrix composed of calcium and phosphorus.
Cartilage cells (chondroblasts) are embedded in a solid matrix of proteins and sugars.
Thus, cartilage and bone can be categorized under rigid connective tissue. Hence, the assertion is correct.
Reason: Blood is fluid connective tissue.
It is true that blood is a fluid connective tissue as the blood cells are embedded in a fluid matrix called plasma. However, this isn't the correct reason for the statement.

So, the correct answer is option ‘B’.

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