Question

Given figures (I and II) show two specialised connective tissue. Identify the figures I, II and the parts labelled as A and B.

• A. I - Cartilage, II - Bone, A - Collagen fibres, B - chondrocyte
• B. I - Cartilage, II - Bone, A - Collagen fibres, B - chondroclast
• C. I - Bone, II - Cartilage, A - Microtubules, B - osteoblast
• D. I - Bone, II - Cartilage, A - Collagen fibre, B - osteoblast

Answer 1

The correct option is A I - Cartilage, II - Bone, A - Collagen fibres, B - chondrocyte

Cartilage (I) is a non-vascular type of supporting connective tissue that is found throughout the body. Cartilage is a flexible connective tissue that is avascular and is less organized than bone. It is made up of cells known as chondrocytes (B). Fibrous cartilage has many collagen fibers (A) and is found in the intervertebral discs and pubic symphysis. Elastic cartilage is springy, yellow, and elastic and is found in the internal support of the external ear and in the epiglottis.

Bone (II) is a connective tissue that has a large amount of matrix material rich in calcium salts and cllagen fibres. This gives strength and flexibility to the tissue. The bone cells or osteoblasts are arranged in the matrix surrounded by clear spaces known as lacunae.