Pine Mature Embryo
Pine trees are cone-bearing evergreens found worldwide, primarily in northern temperate regions. Typically they have woody stems covered in bark, which protects tissues that conduct nutrients and water. When harvested, they provide materials like lumber, turpentine, rosin, paper, pulp, fuel and even food (pine nuts). Pines are gymnosperms, non-flowering plants that produce naked seeds not enclosed in an ovary. In many pine species, winged seeds are distributed from cones by exposure to wind or fire.