Section: Natural Sciences

13) The "dark" reactions of photosynthesis take place in portions of the chloroplast called:

1. grana.
2. stomata.
3. carotene.
4. chlorophyll.
5. stroma.

The dark reactions of photosynthesis use the energy of the ATP, which is formed in the light, for their essential processes, all of which take place in the clear stroma, which surround the grana of the chloroplast.