> The sunflower head, for example, is actually a composite composed of multiple much smaller flowers. While the head is generally radially symmetric—it can be d

> The sunflower head, for example, is actually a composite composed of multiple much smaller flowers. While the head is generally radially symmetric—it can be divided into two equal halves in multiple directions.. When you look at the seeds in the head you will noticed that they form a spiral. A spiral doesn't have a radial symmetry afaik.