An aggregate fruit is a type of fruit that develops from a single flower of many pistils (ovaries). The flower is simple with one corolla, one calyx, and one stem, but has many pistils. Each is fertilized separately, so if one does not pollinate successfully then the fruit will be misshapen. Examples of aggregate fruit are strawberries and raspberries, which is why these pictures are of strawberries and raspberries.
Source:
Aggregate Fruit. (June 5, 2009). biology-online.org. Retrieved on August 31, 2011, from
http://www.biology-online.org/dictionary/Aggregate_fruit
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