The Fruit Fruits generally develop from the maturing ovary, the structure that houses the ovule, and later, the embryo. They have evolved to protect the seeds and to assist in their dispersal. As revealed in the above photographs, fruits have evolved a variety of forms. Fruit type is one characteristic used by taxonomists to catagorize different angiosperm species. Blackberries are an example of an aggregate fruit.
Pineapples are multiple fruits.
Both are fleshy. A hazelnut is an example of a dry fruit. Within the anther microsporocytes develop and undergo meiosis to produce haploid microspores . Each of these undergoes one mitotic division to yield a generative cell and a tube cell. These together comprise the immature microgametophyte , or pollen grain.