Answer: The result of this genetic variation is adaptation. This genetic diversity is dependent on environmental factors and circumstances. Plants may have differences in structure because they must preserve themselves by prevailing in their respective environments; abiotic, biotic, etc. and different environmental pressures demand and enable changes in genetic composition to cope with those pressures. Variations for different climate zones are necessary to the continuity of the plant species. This is the reason why some plants in colder environments may grow closer to the ground to shield themselves from the harshness of the cold, and why plants in environments such as the desert may grow thicker leaves with fewer stomata in order to preserve water and survive dehydration.