<P> Allogamy is the fertilization of the combination of gametes from two parents, generally the ovum from one individual with the spermatozoa of another . (In isogamous species, the two gametes will not be defined as either sperm or ovum .) </P> <P> Self - fertilization, also known as autogamy, occurs in hermaphroditic organisms where the two gametes fused in fertilization come from the same individual, e.g., many vascular plants, some foraminiferans, some ciliates . The term "autogamy" is sometimes substituted for autogamous pollination (not necessarily leading to successful fertilization) and describes self - pollination within the same flower, distinguished from geitonogamous pollination, transfer of pollen to a different flower on the same flowering plant, or within a single monoecious Gymnosperm plant . </P> <P> Mitosis and meiosis are types of cell division . Mitosis occurs in somatic cells, while meiosis occurs in gametes . </P> <P> Mitosis The resultant number of cells in mitosis is twice the number of original cells . The number of chromosomes in the offspring cells is the same as that of the parent cell . </P>

Some species of organisms can reproduce either asexually