You are presented with the quiz "What do plants use to attract pollinators?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "nectar is used for attracting pollinators by plants" and "nectar is secreted in a shallow nectar cup at the base of flower". 

So, what's the best answer to the question?


 

   Something that is secreted in a shallow cup.        