Final answer:
Photosynthesis primarily occurs in the Palisade cells which are found in the mesophyll layer of plant leaves.
Step-by-step explanation:
Photosynthesis primarily occurs in the Pallisade cells. These cells are found in the mesophyll layer of plant leaves, specifically in the upper part. They contain chloroplasts, which are responsible for capturing sunlight and converting it into chemical energy in the form of glucose. The palisade cells are tall and closely packed, maximizing their exposure to sunlight for efficient photosynthesis.
Learn more about Photosynthesis in plant cells