Which organelle contains chlorophyll and is the primary site of photosynthesis in plant cells?

• A. Mitochondrion
• B. Chloroplast
• C. Golgi apparatus
• D. Rough endoplasmic reticulum

Answer: (B)

Verified step by step guidance

1. Identify the organelle responsible for photosynthesis in plant cells by recalling the function of each listed organelle.
2. Recall that mitochondria are primarily involved in cellular respiration, producing ATP by breaking down glucose.
3. Understand that the Golgi apparatus is involved in modifying, sorting, and packaging proteins and lipids, not photosynthesis.
4. Recognize that the rough endoplasmic reticulum is associated with protein synthesis due to the presence of ribosomes on its surface.
5. Conclude that chloroplasts contain chlorophyll and are the primary site of photosynthesis, where light energy is converted into chemical energy.