Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Please answer question 1
Transcribed Image Text:1. Transplanting trees can often lead to death if the plant in question isn't removed with an intact root base. Especially if the transplant
takes place during a drought or heat wave. Can you explain why transplanted trees are susceptible in this way?
2. Several experiments have been performed to test the cohesion-tension theory as to how water moves through a plants xylem tissue.
One such experiment measured minute diameter changes in the trunk on a daily basis. What changes in trunk diameter might you
predict this experiment would show over a 24-hour period? Would the diameter changes be equal throughout the plant? Explain.
3. Some plants transport sugar to companion cells using the symplastic pathway through plasmodesmata (passive loaders). In other
plants, the companion cells lack plasmodesmata and sugars must be imported by using H+-Sucrose-cotransporters (active loaders).
What are the tradeoffs for both active and passive loaders?
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