👉 Placoplast is a type of cell that has been described as a type of "plastic" cell, meaning it has the ability to transform into other types of cells. Placodes, which are the primary structures found in plant cells and play a critical role in nutrient transport, have been shown to undergo this process. This transformation is known as plastodegeneration or plastidogenesis, and it results in the formation of new cell structures that can then be used for various purposes.