👉 Pterochondria are specialized structures in eukaryotic cells that serve as a protective outer layer, protecting the cell from external forces and nutrients. These structures are composed of two layers - a stipe (outer surface) and a mesonecium (inner surface). The stipe acts as a barrier to prevent pathogens and other invaders from entering the cell, while the mesonecium provides structural support and serves as an area for nutrient uptake and metabolism.
