a. Which of the following statements about the role of growth rate in competition is FALSE? A single combination of traits usually produces a competitor that is best in all environments. Plants with a high growth rate often have an advantage over plants with a low growth rate. Within a single community, different species may coexist because of adaptations to different microenvironments. Leaf arrangement, crown shape, and patterns of allocation of energy all affect growth rate. Plants with a low growth rate may survive if they are able to photosynthesize at low light intensities.