(Solved): 5. Distribution maps of Shepherdia canadensis and Shepherdia argentea are shown below. Dots represen ...

5. Distribution maps of Shepherdia canadensis and Shepherdia argentea are shown below. Dots represent the locations of known populations. Shepherdia argentea produces flowers from mid-April to early May whereas S. canadensis flowers from mid-May to early June. Name two pre-mating isolating mechanisms that could serve as barriers to hybridization between the species ( 2 pts ) 6. Scirpus acutus (Cyperaceae) grows along an ecotone near Lake Minnetonka, Minnesota. Plants immediately along the shoreline are taller than upland individuals growing at some distance from the shoreline. You plan to restore this species to the shoreline of Lake of the Isles, Minneapolis by planting seeds from Lake Minnetonka. However, you first want to know whether different seed sources, either lakeshore or upland, could influence restoration success. So you conduct a reciprocal transplant experiment where seeds from upland genotypes are transplanted into uplands and lakeshores, and vice-versa with lakeshore genotypes. (a) What does the graph of results suggest about factors affecting the phenotype of plant height? ( 3 pts ) (b) Is it necessary to consider the source of seeds, lakeshore or upland, in this case of lakeshore restoration? Why or why not? ( 3 pts )