Final answer:
The chloroplast is the organelle responsible for photosynthesis, which converts light energy into chemical energy in plants and some protists, whereas mitochondria produce ATP from organic compounds. The correct option is h.) chloroplasts
Step-by-step explanation:
The organelle that produces energy and is the site of photosynthesis in plants and some protists is the chloroplast. Chloroplasts capture the energy of sunlight and use it along with carbon dioxide from the air and water to produce glucose, which serves as food for the plant. In this process, the energy from the sunlight is transformed into chemical energy in the form of glucose, which can then be used to power the cells' activities. This organelle is specific to plants and some protists, whereas other eukaryotic cells, including animal cells, do not have chloroplasts and do not perform photosynthesis.
While mitochondria are referred to as the "power plants" of the cell due to their role in producing adenosine triphosphate (ATP), the site of photosynthesis is the chloroplast. The mitochondrion uses energy from organic compounds to make ATP, which is then used for activities such as movement and cell division. However, the chloroplast is responsible for converting light energy into chemical energy through the process of photosynthesis.
The correct option is h.) chloroplasts