What function do the colors, patterns, shapes and odors of petals serve? 3. 1. 2. What is the function of the nectar of the flower? In looking at the orchids from an "insect's perspective," what other possible "rewards" might the flow- er have evolved to entice you to make a visit? Why aren't the cones of pines and redwoods, and flowers of many grasses (e.g., wild oats) brightly colored or odorous? That is, what agent serves in their pollination and how does this relate to the rela- tively dull colored reproductive structures? What common features do grasses and pines share in terms of their distribution in the environment? Are they typically grouped together in large stands or spaced widely apart? How does this pattern of distribution aid their method of pollination?