The difference between net and gross primary productivity would likely be greatest for Naim 12:40 AP Biology The difference between net and gross primary productivity would likely be greatest for a. phytoplankton in the ocean b. corn plants in a farmer's field c. prairie grasses d. an oak tree in a forest e. sphagnum moss in a bog Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+