Which of the following cells of connective tissue secrete antibodies?

Which of the following contains an abundant amount of extracellular matrix?

Choose the correct statement regarding the canals in bone tissue.

The outer covering of cartilage is known as:

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

The cells of connective tissue which produce histamine are