I can help
1. Flowers that emit a rotten odor
2. When a sperm cell and egg cell come together
3. Less competition for pollinators with other species( read all the answers to find the right one )
Here's the answers for five questions
1. flowers that emit a rotten odor
2.when a sperm cell and egg cell come together
3.less competition for pollinators with other species
5.Plant-pollinator coevolution involves changes in both species over a long period of time that help both the plant and the pollinator survive and reproduce.
Hope this helps!