Photosynthesis occurs in chloroplasts of palisade cells

Steps:

• Palisade cells are specialized leaf cells optimized for light absorption.
• Photosynthesis requires chlorophyll-containing organelles to capture light energy.
• Examine the diagram labels to match structures with functions.
• Select the label indicating green, disc-shaped organelles.

Why B is correct:

• Chloroplasts are the site of photosynthesis, containing thylakoids where light-dependent reactions occur, as defined by plant cell biology.

Why the others are wrong:

• A: Cell wall provides structural support, not photosynthesis.
• C: Nucleus controls cell activities but lacks photosynthetic machinery.
• D: Vacuole stores water and nutrients, unrelated to light energy conversion.

Final answer: B