1. Fertilizer made from wood is called potash.
a) True b) False
2. Excelsior cannot be manufactured from poplar, basswood or pine.
a) True b) False 4. The woody substance of trees is primarily formed at the tips of branches.
a) True b) False 5. Tree growth rings contain two distinct growth layers.
6. The longitudinal cells in softwoods are much longer than the cells in hardwoods.
7. Cells in the cambium produce both wood and bark in living trees.
a) True b) False 8. Both hardwoods and softwoods contain cells which we call vessels, or pores.
a) True b) False 9. Tension wood in hardwoods forms on the under side of a leaning tree.
a) True b) False 10. Heartwood is made up of dead cells around the tree pith .