A moss does not make seeds. A moss does not have fruit. The green fuzzy part of a moss that is always there has only one set of DNA. Moss waits until there is lots of food and enough water. Then it produces spores that leave the parent plant and float away. The spores are like dust. They will make more moss. Each spore is male or female. It grows into the green fuzzy part of the moss called the gametophyte. Male gametophyte make sperm. Female gametophyte make eggs. Water moves the sperm from the male moss to the female moss. Then the sperm and the egg join to make a cell with two sets of moss DNA. This cell grows into a different shape called a sporophyte. The sporophyte gets all of its food from the green fuzzy female gametophyte. When the sporophyte grows up, it makes a tiny box with spores inside instead of seeds. The lid on the box falls and the spores float away to repeat the cycle again. This process is called alternation of generations.