Reproductive process begins with the formation and development of male gametes and female gametes. Below will not talk about how male and female gametes formed in the flowers, but keep in mind that the male gamete produced in anthera (juice boxes), while female gametes produced in the ovaries. Many plants form a good anthera and carpels together on every flower meristem, resulting in a flower called a perfect flower or flowers hermaphrodite or bisexual flowers. Some plants produce two types of flowers are flowers that produce only anthera only (staminat flowers) or only carpels alone (pistilat interest). Plants monoecious (monocious) produces two types of flowers on one tree, while the marriage of two plants (dicious) only produced one flower jensi on one tree.
The fact that the stamens are always developing earlier than the middle of the meristem than the carpels, presumably due to differences in levels of growth regulators or hormones derived from or directed to the center of the meristem, it is very important in controlling sex expression in flowers. Provision of natural and synthetic auxins sprayed on plants monocious, has increased the proportion of female flowers. Auxin has led to the development of female flowers although primordianya genetically prepared for the male flowers, while gibberellins give the opposite effect. Once development of the ovary has begun, then the development will be inhibited stamennya. Homeless on two plants, sex change is possible. If the flowers are produced male gametes and female gametes, the pollination or pollination can occur which subsequently result of fusion of male and female gamete gametes would produce zygotes.
In some plants even though there is pollination, but fertilization can not occur. Reduction division in plants is not the case megaspore mother cell and meiosis and embryos develop without fertilization. This is an example apomiksis, namely reproduction without going through the merger of gametes.
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