Which organelle in leaf cells is responsible for photosynthesis?

• A. Mitochondria
• B. Chlorophyll
• C. Chloroplasts
• D. Ribosomes

Answer: (C)

The organelle responsible for photosynthesis in leaf cells is chloroplasts. Chloroplasts are specialized structures found in plant cells and certain algae, containing chlorophyll, which is the pigment necessary for capturing light energy. They play a crucial role in converting light energy, along with carbon dioxide and water, into glucose and oxygen through the process of photosynthesis. This process is not only essential for plant growth but also vital for life on Earth, as it produces oxygen and serves as the foundation for food chains.

While mitochondria are involved in cellular respiration, ribosomes are responsible for protein synthesis, and chlorophyll is the pigment within chloroplasts that captures light energy, it is truly the chloroplasts that house the entire machinery required for conducting photosynthesis. Therefore, the identification of chloroplasts as the correct organelle highlights their key function in energy transformation and sustenance of plant life.