Hardness of the bones is due to

Refer to the given figure and identify the correct characteristic features.
$(i)$ It is a type of loose connective tissue.
$(ii)$ It contains fibroblasts,macrophages,collagen fibres,and mast cells.
$(iii)$ The cells of this tissue are specialized to store fats.
$(iv)$ It forms the inner lining of blood vessels,stomach,and intestine.

Cartilage is formed by

Mast cells of connective tissue contain ...........

Areolar tissue,a type of loose connective tissue,serves to attach:

The matrix of hyaline cartilage contains