1. The living part of the tree is called the
a) xylem b) bark c) cambium
2. A tree's age can be estimated by measuring its
3. A tree species with both male and female flowers on the same tree is
a) red oak b) willow c) white ash
a) trembling aspen b) white birch c) sugar maple
a) layering b) suckering c) sprouting
6. A tree takes up most of its water through the
a) bark b) roots c) leaves
7. Standing dead trees are valuable for wildlife, and are called
a) wolf trees b) snags c) stubs
a) wind b) insects c) birds
a) late fall b) spring c) late winter
a) water b) soil nutrients c) shade