The male sperm cells are contained in pollen grains. The female egg cells are contained in the ovary. Sex among the flowering plants involves two separate but related activities: pollination and fertilization. Pollination is the transfer of pollen from the male organ of a flower to the female organ of a flower. The male organ known as an anther generates the pollen grains containing male genetic material. In most flowers, anthers are located at the tip of a stalk known as a stamen.
Also called Bravais lattice, crystal lattice, space lattice. Crystallography. an arrangement in space of isolated points (lattice points) in a regular pattern, showing the positions of atoms, molecules, or ions in the structure of a crystal. 5. Mathematics.
Look up crystallinity or crystalline in Wiktionary, the free dictionary. Crystallinity refers to the degree of structural order in a solid. In a crystal, the atoms or molecules are arranged in a regular, periodic manner. The degree of crystallinity has a big influence on hardness, density, transparency and diffusion. In a gas, the relative positions of the atoms or molecules are completely random.