The ____ of the plant produces or manufactures food.

• A. Root
• B. Leaf
• C. Stem
• D. Flower

Answer: (B)

Leaves are where photosynthesis happens, the process that makes the plant’s food. The chloroplasts in the leaf cells contain chlorophyll that captures light energy and uses it to convert carbon dioxide and water into glucose, the plant’s source of energy and building material. The leaf’s large surface area and specialized cell layers, like the chloroplast-rich mesophyll and the stomata for gas exchange, optimize this manufacture process. The glucose produced is then transported to other parts of the plant as needed. Roots mainly absorb water and minerals, stems provide support and movement of substances, and flowers are for reproduction, not food production. That makes the leaf the primary site that manufactures food for the plant.