Tell me how the reproduction of gymnosperms occurs?

Reproduction of gymnosperms is of two types: vegetative and sexual. Vegetative propagation occurs through the formation of bulbs or adventitious buds that develop on the stem in the leaf axils, for example, of cicas. Gymnosperms are heteroporous, and sexual reproduction is oogas. In living gymnosperms, reproductive structures are arranged in the form of strobiles or cones (except for the ovulation structures of the cycas). Plants can be monoecious or dioecious. Usually gymnosperms are monosporgial (same-sex), but in some cases bis-original (bisexual) gymnosperms have been reported.