In plant cells, what is the role of mitochondria in relation to photosynthesis?

• A. They generate ATP by cellular respiration, helping supply energy for cellular processes (including some associated with photosynthetic metabolism), but they do not carry out the light reactions.
• B. They fix $C_{O}2$ into sugars via the Calvin cycle in the stroma.
• C. They contain chlorophyll and absorb light energy to excite electrons for the photosynthetic electron transport chain.
• D. They are the primary site of the light-dependent reactions, producing $O{2}_{}$ from water splitting in thylakoid membranes.

Answer: (A)