Reference no: EM132761279

-Before playground equipment, children used to hang swings on tree branches. After several years, the swing would still be the same distance from the ground, much to the surprise of the children who had seen the tree grow taller. Explain why the height of the swing did not change.

-A shallow cut into the trunk of a young tree will often result in the death of any branches above that cut. Explain why this happens.

-On many Ontario highways a plant known as crown vetch is often planted on slopes on the side of the highway. These plants are so important that signs identify them and warn against cutting. A study of the plant shows an extensive root system. Why is this plant grown on embankments?

-Which of the following is not an adaptation found in some stems? a. the ability to store water or food b. used for asexual reproduction c. both a and b d. neither a nor b are stem adaptations.