Is a pineapple one single fruit?

No, a pineapple is not one single fruit. It is actually a multiple fruit, which means that it is formed from the fusion of many flowers. The individual flowers on the pineapple plant are small and white, and they grow in a spiral pattern around a central stem. When the flowers are pollinated, they develop into small, juicy fruits called drupelets. These drupelets then fuse together to form the single, large fruit that we know as a pineapple.