Where are the Haversian canals located?

What are the functions of connective tissue from the following?
$(i)$ Provides immunity
$(ii)$ Helpful in blood coagulation
$(iii)$ Stops coagulation of blood in blood vessels
$(iv)$ Connects tissues

Find the incorrectly matched pair.

The connective tissue of the vertebrate body is built up from fibres of the protein collagen,embedded in a polysaccharide matrix to form:

The supportive skeletal structures in the human external ears and in the nose tip are examples of

What happens when collagen fibres are removed from the areolar tissue?