Complex tissues involve more than one cell type. I. Tissues are differentiated cell regions. Like many algae, plants are multicellular. Multicellularity is achieved in plants by sharing cell walls. Cell wall formation in plants 4.
Tissues are collections of specialized cells that perform a common function.
Most algae have no such specialization of cells, all cells are alike. Plant tissues are produced from meristems. Development is the process of making a multicellular organism from a single cell. B. All of this development results from the activity of meristems. Animals do not have meristems.