What do fibroblasts secrete?

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

Choose the correct option for the following statements:
$(i)$ Bone shows unidirectional / bidirectional growth.
$(ii)$ Ligaments are made up of white fibers / yellow fibers.

Which of the following characteristics is true for a connective tissue?

Thousands of years old mummies are still in their condition as they were before due to the non-destruction of:

Mast cells are associated with