41. The condition of having separate sporophyte and gametophyte plants is call alternation of generations. 42. The gametophytes produce male ( antheridium ), and female ( archegonium ) gametes. 43. They later germinate into heart-shaped gametophytes . 44. No haploid spores capable of dividing are produced, so neither is a haploid gametophyte . 45. In dioicous mosses, male and female sex organs are borne on different gametophyte plants. 46. These undergo mitosis to form male gametophytes , each of which contains two haploid cells. 47. Mature sporophytes remain attached to the gametophyte . 48. The sporophyte remains small and dependent on the parent gametophyte for its entire brief life. 49. The resulting meiospores develop into a gametophyte . 50. The sporophyte produces spores which develop into free-living male and female gametophyte plants.