Answer:
1.b. root
2.b. mutualistic
Step-by-step explanation:
The root of the plant is the organ system that anchors the plant to the ground or to a point where the plant can grow from and serves as an absorption and storage unit for water and nutrients.
A mutualistic relationship helps both organisms that are involved on it, in this case bees and flowers could be the perfect example, bees feed from the extra nectar that is located in flowers and while doing so they gater polen which contains sexual reproductive cells from the flower and spread it to other flowers, non of the actions damage the other organisms and both benefit from this reletionship.