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Unformatted text preview: cause dwarfing. (5 pts.) 4. Explain why a nail driven into the side of a tree will remain at exactly the same distance from the ground for the life of the tree. (5 pts.) 5. Suggest some reasons why heartwood is preferred to sapwood for making furniture. Refer to the features of the cells found in heartwood. (5 pts.) 6. Since tendrils and spines can be either modified stems or modified leaves, how would you tell the difference? (5 pts.) 7. How are the leaves of trees in the Boreal forest (Taiga) adapted to the climate there? (5 pts.) 8. Distinguish among diffusion, osmosis, active transport, plasmolysis, and imbibition. (5 pts.) 9. (5 pts.) Explain why the rate of transpiration increases when: i. Dawn breaks and the sun comes up ii. The weather becomes very windy...
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- Spring '08