Flower Pollen and Perga
Each plant has pollen grains of a certain shape (spherical, triangular, polyhedral), different in color (from white to dark brown), a size that in different plants is 0.01 to 0.05 mm in diameter. Plants form
Each plant has pollen grains of a certain shape (spherical, triangular, polyhedral), different in color (from white to dark brown), a size that in different plants is 0.01 to 0.05 mm in diameter. Plants form