Concept Quizzes

1		The algae are known to have a variety of photosynthetic pigments, while in all land plants the photosynthetic pigments are the same. Can you speculate why a variety of photosynthetic pigments have evolved in the algae that live in an aquatic environment while this diversity is not see in the land plants?
2		Blooms by toxin-producing algae have been increasing in recent years, causing serious problems in both marine and freshwater environments. Speculate on the evolutionary value of this toxin-producing ability.