During the follicular phase, granulosa cells secrete which stimulates secretion of

 During the follicular phase, granulosa cells secrete estrogen, which stimulates secretion of gonadotropin-releasing hormone (GnRH), which then increases production of luteinizing hormone (LH). The follicular phase is the phase of the menstrual cycle, during which follicles in the ovary mature and it ends with ovulation.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

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