Consider the tradeoffs between having a living exterior with guard cells vs. a thick layer of waterproofed dead cells. How might this impact the ability of the plant to interact with the outer environment? 2. Why do some seeds undergo a period of dormancy, and how do they break dormancy? 3. Girdling is a process used to slowly kill a tree and/or to create a standing dead tree (a snag). Explain why girdling would kill a tree.

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter33: The Plant Body
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1. Consider the tradeoffs between having a living exterior with guard cells vs. a thick layer of waterproofed dead cells. How might this impact the ability of the plant to interact with the outer environment?

2. Why do some seeds undergo a period of dormancy, and how do they break dormancy?

3. Girdling is a process used to slowly kill a tree and/or to create a standing dead tree (a snag). Explain why girdling would kill a tree.

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