Anthers and Stigmas and Styles, Oh My! Fertilization occurs in our plants and other types of Brassica Oleracea through the plants different parts. For instance, first, pollen grains are formed by meiosis and the anthers, producing haploid spores that go through mitosis. After that, meiosis in the ovule produces haploid spores as well, and after the spores going through mitosis, they become an egg. Then, pollen grains land on the stigma, which grow tubes to the ovule, with a sperm fertilizing the egg. This forms a zygote, and in each ovule, a seed is developed and during the development, the ovary wall starts to thicken and form the fruit around the seeds and eventually, the plant starts to grow. This is a picture of our tiny yellow flower under the microscope. This image shows how after everything from the flower has been taken off, besides the ovules, which look like tiny green bubbles. The ovary was sliced o...
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