| I: | Only green plants can prepare their own food. |
| II: | In green plants, all cells, tissues and organs photosynthesise. |
| 1. | Only I |
| 2. | Only II |
| 3. | Both I and II |
| 4. | Neither I nor II |
| I: | carbon dioxide is reduced. |
| II: | oxygen is released. |
| III: | the hydrogen carrier is NAD. |