1. Based on what you've learned, why did plants most likely evolve to use photosynthesis? Which environmental factors would select for this process for storing solar energy, or sunlight, in the form of organic molecules?

Plants most likely evolved to use photosynthesis as a way to efficiently capture and convert solar energy into chemical energy in the form of organic molecules. This process allowed plants to harness the abundant sunlight available in their environment to power their growth and metabolism.

Environmental factors that would select for the evolution of photosynthesis in plants include the presence of sunlight as a source of energy, the availability of carbon dioxide as a source of carbon, and the need to compete for limited resources such as water and nutrients. By being able to convert sunlight into chemical energy through photosynthesis, plants gained a competitive advantage in their environment, allowing them to thrive and outcompete other organisms. Additionally, photosynthesis allowed plants to adapt to various environmental conditions and establish themselves in a wide range of habitats.