Mosses produce sexually by forming spores. Sperm from one gametophyte fertilizes the egg of another, producting a zygote. A stalk-like structure, called a Sporophyte, with a capsule at the top containing the spores grows from the zygote. When released, the spores will grow into new gametophytes. All mosses show alteration of generations.
Ferns are vascular plants forming true roots, stems, and leaves.
They reproduce sexually by forming spores, not seeds. There was a time when ferns were the dominant form of plant life on Earth. Today, their distribution is limited by the requirement of having drops of water at a certain time for reproduction. Ferns range in size from just a few inches to 25 meters in height. The leaves of a fern are known as fronds .