Dear student,
The method of reproduction is sexual reproduction in gymnosperm, sexual and asexual in angiosperm. Naked seed in gymnosperm is formed by the fusion of male sperm cell and female egg cell. Female reproductive part is cone while pollen is the male reproductive part in gymnosperm. But in angiosperm male sperm cell fuses with the female egg cell inside the ovary and develops into covered seeds called fruit. Male and female reproductive structures are present inside the flower in angiosperm.
Regards