tag:blogger.com,1999:blog-2240168782260797289.post4840528594266546416..comments2018-07-26T01:41:19.422-06:00Comments on Green Fork Utah: Plant Anatomy 101: SunflowersGreen Forkhttp://www.blogger.com/profile/11246358800941109479noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-2240168782260797289.post-21495181395665380122009-05-04T13:23:00.000-06:002009-05-04T13:23:00.000-06:00One of the most amazing things about sunflowers (a...One of the most amazing things about sunflowers (and many other flowering plants), is that if you count the number of seeds/buds in the opposing spirals on the head of the flower, they are usually successive numbers in the Fibonacci sequence. The Fibonacci sequence comes from adding each number to its predecessor (i.e. 1,2,3,5,8,13...34,55... etc). In the case of sunflowers, they usually have 21 and 34 or 34 and 55 seeds/flowers in each of the opposing spirals. Count the parts in the spirals on a pine cone, they probably will be 5 & 8. Scientists still don't totally understand why this is so but it pops up all over the place in nature. For instance, the ratio of each Fibonacci number to the previous number in the series (i.e. 34/21, etc...) converges on the ratio of the sides of the golden rectangle which, in addition to being popular in art, also perfectly describes the ratio of shell parts in animals like the chambered nautilus! (Try wikipedia for more info on any of the terms above).Tim Brownhttps://www.blogger.com/profile/12846288928161897253noreply@blogger.com