Why are flower stems green but the flowers are coloured?
The flowers are a bright array of colours to attract insects and birds that serve in pollinating the plant. Pollen is the plant’s method of reproduction, so it is made up of the male gametes that carry plant genes. When insects and birds carry pollen from one plant to another, they carry a plant’s genes to another plant and fertilize the plant, enabling it to produce fruit and genetically different offspring. Genetic diversity generally an advantage in the survival of the species.
