Final answer:
A callus is formed by a plant in response to an injury to its food-conducting tissue. It is an unorganized mass of cells that slowly forms at the site of the wound and serves as a protective barrier during the plant's tissue repair phase.
Step-by-step explanation:
In response to an injury of its food-conducting tissue, a plant can form an unorganized mass of cells called a callus that slowly forms at the site of a wound
When a plant is injured, it needs a way to protect itself and repair the damaged tissue. One way it does this is by forming a callus, which is a mass of undifferentiated cells that can develop into various types of cells needed for wound healing.
Think of it as the plant's version of scar tissue. The callus provides a protective barrier and helps prevent infection while the plant's normal tissue is repairing itself.