Practice%20Midterm1-Answers

Practice%20Midterm1-Answers - 1) Active transport plays an...

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1) Active transport plays an important role in: a) phloem loading b) water transport in the xylem c) xylem unloading d) a) and c) above e) none of the above 2) Which of the following water properties are NOT important for transpiration: a) polarity b) adhesion c) cohesion d) surface tension e) none of the above 3) Which of the following properties are MOST important to cooling by transpiration a) adhesion b) high specific heat c) LOW latent heat of vaporization d) HIGH latent heat of vaporization e) b) and d) 4) It is possible to attach micro-manometers to aphid stylets to measure phloem pressures. You decide to examine phloem pressure at two stylets. Stylet A is inserted near the youngest mature leaf and stylet B is inserted near the shoot apex. Which would you expect: a) The pressures at stylet A and B are equal. b) The pressure at stylet A is greater than stylet B c) The pressure at stylet B is greater than stylet A d) Can't determine from the information given. Questions 5) through 11) are True/False. For these questions a) = True; b) = False 5) Root pressure is sufficient to push water to the leaves of a tall tree FALSE 6) Roots do not exhibit positive pressure FALSE
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This note was uploaded on 05/08/2008 for the course NPB 101 taught by Professor Fuller,charles/goldberg,jack during the Fall '08 term at UC Davis.

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Practice%20Midterm1-Answers - 1) Active transport plays an...

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