I need help on my 7th grade "seed reproduction" homework!?

What is the group of organisms that aid in the pollination of flowers called? No, it's not a bee or anything. He (our teacher) wants us to be more specific. Someone had put "pollinator" as their answer and he said that wasn't right, so any ideas? PLEASE? Then, another question says "__(blank)__ grows from the pollen grain to the ovule." So...? Please, I need help. Please reply ASAP!!