Which plant part carries out photosynthesis?

Which plant part carries out photosynthesis?

• A. Leaves Function
• B. Roots Function
• C. Stem Function
• D. Adaptations

Answer: (A)

Photosynthesis happens best in the leaves because they are built to capture light and host the cell machinery that makes food. Leaves are broad, giving them a large surface area to absorb sunlight. Inside, chloroplasts with chlorophyll grab light energy and drive the chemical reactions that turn water and carbon dioxide into glucose and oxygen. The mesophyll layer is rich with these chloroplasts, and the stomata allow carbon dioxide to enter while water vapor exits, enabling gas exchange. The xylem brings in water from the roots, and the phloem carries the produced sugars to other parts of the plant. Roots don’t typically photosynthesize because they’re underground and lack light and chloroplasts, and while stems can perform some photosynthesis, leaves are the main site. So, the plant part that carries out photosynthesis is the leaf.

Photosynthesis happens best in the leaves because they are built to capture light and host the cell machinery that makes food. Leaves are broad, giving them a large surface area to absorb sunlight. Inside, chloroplasts with chlorophyll grab light energy and drive the chemical reactions that turn water and carbon dioxide into glucose and oxygen. The mesophyll layer is rich with these chloroplasts, and the stomata allow carbon dioxide to enter while water vapor exits, enabling gas exchange. The xylem brings in water from the roots, and the phloem carries the produced sugars to other parts of the plant. Roots don’t typically photosynthesize because they’re underground and lack light and chloroplasts, and while stems can perform some photosynthesis, leaves are the main site. So, the plant part that carries out photosynthesis is the leaf.