I. mitosis II. fertilization III. regeneration IV. egg and sperm V. chromosomes from parents This is an illustration of the moss life cycle. Although moss is a primitive plant, it does have some things in common with higher plants and animals when it reproduces. Take a good look at the diagram. Find the term gamete. Describe what is happening at this step in the reproductive cycle of moss. A) The sperm fertilizes the egg to produce a zygote. B) Gametes unite during meiosis to produce a zygote. C) Gametes combine to form a larger cell called a zygote. D) Pollination joins the two gametes outside the moss plant body.