Phytoplankton are bacteria and algae that use sunlight to make food, and phytoplankton, or plant plankton, needs sunlight to live, the same way plants on land do. Given these facts, what does plant plankton need for food among the following options:
- Sunlight
 - chemicals
 - glucose
 - warmth
 - Bodily water
 - photons
 - The Sun
 - Energy


 

 Sunlight        