Answer: Chloroplast
Explanation: Plants have chloroplast in the cell which is responsible for photosynthesis, it has chorophyll responsible for the green colour of plants. They use this organelle to make their own food from sunlight, which is further converted into energy in a form of ATP and NADPH, then stored in the mitochondria using the eletron transport chain. During photosynthesis this organelle takes in carbondioxide and release oxygen as its byproduct.