What is glucagon's major role in the body?

prevent blood glucose levels dropping

Explanation:Glucagon's role in the body is to prevent blood glucose levels dropping too low. To do this, it acts on the liver in several ways: It stimulates the conversion of stored glycogen (stored in the liver) to glucose, which can be released into the bloodstream. This process is called glycogenolysis.

its the cell wall and the they are unique to plant

well, i believe that the answer is 2. : 3