A few examples are given below.
Where do flowers get their colour from?
Answers
Basically, the colours in individual flowers come down to pigments within them. There are many different types. Anthocyanins for instance give some plants their blue, purple or pink colour. Carotenoids make plants red, yellow or orange, while chlorophyll of course makes plants green, (which can be found in the stems).
Answer: The colors you see in flowers come from the DNA of a plant. Genes in a plant's DNA direct cells to produce pigments of various colors. When a flower is red, for instance, it means that the cells in the petals have produced a pigment that absorbs all colors of light but red. When you look at that flower, it reflects red light, so it appears to be red.
Explanation: The reason for having flower color genetics to begin with is a matter of evolutionary survival. Flowers are the reproductive parts of plants. They attract pollinators to pick up pollen and transfer it to other plants and flowers. This allows the plant to reproduce. Many flowers even express pigments that can only be seen in the ultraviolet part of the light spectrum because bees can see these colors. Some flowers change color or fade over time, like from pink to blue. This informs pollinators that the flowers are past their prime, and pollination is no longer needed. There is evidence that in addition to attracting pollinators, flowers developed to be attractive to humans. If a flower is colorful and pretty, we humans will cultivate that plant. This ensures it keeps growing and reproducing.
Hope this helps you :-)