What Are Three Inputs of Photosynthesis?

Water enters a plant primarily through its roots, while carbon dioxide comes in through leaf pores called stomata. Plant cells also have organelles called chloroplasts. A chemical in the chloroplasts, chlorophyll, gathers the sunlight.

If the amount of one of the inputs is low, photosynthesis is slowed down, regardless of the quantities of the other inputs. Also, extreme heat or cold make it difficult for plants to undergo photosynthesis.