After the formation of the Hawaiian Islands, much time passed before conditions were suitable for plant life. A. Algae are classified as symbiotic because they produce energy through the process of photosynthesis. B. The first successful plants on Hawaii were probably lichens, which consist of algae and fungi living in a symbiotic relationship. C. Lichens helped create favorable conditions for the growth of spore-producing plants such as ferns and mosses. D. Seed-bearing plants evolved much later than spore-producing plants, but both types of plants had evolved well before the formation of the Hawaiian Islands. E. Unlike spores, seeds must move to new habitats in order to have a strong chance of survival and growth. F. Seed-bearing plants arrived and spread quickly in Hawaii, thanks to characteristics that increased their seeds' ability to survive and to move to different areas.