Final answer:
The continuum of cell walls connecting neighboring plant cells is known as plasmodesmata, which enable transport and communication between cells.
Step-by-step explanation:
The continuum of cell walls connecting neighboring cells is defined as the plasmodesmata. Plasmodesmata are numerous channels that pass between the cell walls of adjacent plant cells, which connect their cytoplasm. This connection allows for the transport of water, nutrients, and signaling molecules from one plant cell directly to another, facilitating intercellular communication and the distribution of resources.