C. Intercellular junctions integrate cells into a higher level of structure and function. Neighboring cells adhere, interact, and communicate. Plasmodesmata extensions of the ER between cells that allows the exchange of cytoplasm between cells. This unifies the plant into one living continuum. X. Plant vs. Animal Cells A. Differences between plant and animal cells.
Plant cells possess a cell wall, animals never.
Plant cells may possess plastids, animals never. B. Similarities between plant and animal cells. Both possess cytoplasm. Both possess genetic material. Both possess a plasma membrane.