In plants, photosynthesis primarily occurs in which organelle within leaf mesophyll cells?

• A. Nucleus
• B. Chloroplasts
• C. Central vacuole
• D. Mitochondria

Answer: (B)

Verified step by step guidance

1. Identify the organelles present in leaf mesophyll cells and their primary functions.
2. Recall that photosynthesis is the process by which plants convert light energy into chemical energy, producing glucose and oxygen.
3. Understand that the organelle responsible for photosynthesis contains pigments like chlorophyll that capture light energy.
4. Recognize that chloroplasts are the organelles containing chlorophyll and are the site of photosynthesis in plant cells.
5. Conclude that among the options given, chloroplasts are the organelles where photosynthesis primarily occurs in leaf mesophyll cells.