True or False: Leaves are the primary organs for photosynthesis in plants.

Leaves are indeed the primary organs for photosynthesis in plants, making the assertion true. This is primarily because leaves contain chloroplasts, which house chlorophyll, the pigment responsible for capturing light energy from the sun. During photosynthesis, these chloroplasts convert carbon dioxide and water into glucose and oxygen using sunlight.

Additionally, the structure of leaves is optimized for photosynthesis. Their broad, flat shape increases the surface area exposed to sunlight, while the arrangement of stomata (small openings on the leaf surface) facilitates gas exchange, allowing carbon dioxide to diffuse into the leaf and oxygen to be released.

While other plant parts can contribute to photosynthesis in some capacity (for instance, some stems and even fruits), leaves are the most efficient and are considered the main site of this vital process. Therefore, the statement is accurate.