Sites of photosynthesis in plants: Identify the plant parts where photosynthesis generally occurs. Consider chloroplast-rich tissues such as leaf mesophyll; some green stems and other green organs can also photosynthesize. Choose the best answer.

Difficulty: Easy

• Green leaves, especially the mesophyll (chloroplasts); also other green parts
• Roots only, due to high respiration
• Xylem vessels in stems
• Seeds during dormancy