This diagram shows how leaf and root cells work together in plants. In leaves, photosynthesis uses CO to produce sugars, which are transported to roots. In root cells, sugars fuel the TCA How To Grow Peppers From Seed HOSS Plants and Biomes of North America Activities Montessori Nature How to Grow and Care for Coffee Plant Frontiers Roles of arbuscular mycorrhizal fungi in plant growth and disease management for sustainable agriculture Autumn Pots Minus the Mums Fine Gardening