There is no link for flowers. They just showed up all at once. I think God created flowers after He created Eve. :) Just a pleasant thought.
When Darwin came up with his theory, supporters thought the cell was “a blob of protoplasm”. So the theory could have been the result of a simplistic amount of knowledge. However, I think it was something more sinister. Lowering man to the level of animals or insects or sea sponges or whatever serves a purpose. Is it a coincidence Darwin’s cousin Sir Francis Galton was eugenics pioneer?