Questions: Bone cell that possesses mitotic ability for bone formation

The answer is the first one: Osteoprogenitor.

Explanation for each option:

1. Osteoprogenitor: These are stem cells found in the bone that have the ability to divide and differentiate into osteoblasts, which are responsible for bone formation. They possess mitotic ability, meaning they can undergo cell division.
2. Osteoblast: These cells are responsible for the formation of new bone. They do not possess mitotic ability; instead, they are derived from osteoprogenitor cells.
3. Osteoclast: These are large cells that break down bone tissue, a process known as bone resorption. They do not have mitotic ability and are derived from the monocyte/macrophage lineage.
4. Osteocyte: These are mature bone cells that originate from osteoblasts. They are embedded in the bone matrix and do not have the ability to divide.

Summary: The bone cell that possesses mitotic ability for bone formation is the osteoprogenitor cell.