Q. Assertion: Cartilage (protein matrix) and bone (calcium matrix) are rigid connective tissues.
Reason: Blood is connective tissue in which plasma is the matrix.

 2033  189 AIIMSAIIMS 1999Structural Organisation in Animals Report Error

Solution:

Cartilage and bone are rigid connective tissues because in cartilage, protein is the matrix and in bone calcium is the matrix both of which are solid structures. On the other hand blood is the connective tissue where plasma is the matrix which is mainly the liquid component having some blood cells in it.