Before plants evolved, vegetative life consisted of primitive green algae living in the sea. Like plants, these algae survived by performing photosynthesis, turning sunlight into energy. However, little light reaches the ocean where algae live; therefore, they evolved specialized organs to grab what little is available.
Among these tiny ocean algae are prasinophytes, which are among the earliest photosynthetic life forms on Earth. Like all photosynthetic organisms, they rely on a pigment–protein complex called LHC to capture sunlight. How efficiently LHC performs photosynthesis in different environments depends on the pigments bound to it.
