Final answer:
Parenchyma cells are the most common and least specialized plant cells. They are responsible for metabolic functions like photosynthesis and aid in wound repair and healing. Some parenchyma cells also store starch.
Step-by-step explanation:
The most common and least specialized plant cells are parenchyma cells. They are found in various parts of the plant such as the stem, root, leaf, and fruit pulp. Parenchyma cells are responsible for metabolic functions like photosynthesis and also aid in wound repair and healing. Some parenchyma cells even store starch.