Choose the correct statement from the codes given below

I. Separation from extracellular medium allows the cells to maintain its chemical pool, orderliness of structure and reactions in contrast to disorderly distribution and randomly interacting molecules in the extra-cellular medium

II. Cells are unable to recognize one another due to the present of specific chemicals on their surface

III. Cells of plant tissues are often connected with one another through cytoplasmic bridges called plasmodesmata

IV. Different cells of an organism communicate as well as exchange materials with one another