Midterm_1_Practice

Midterm_1_Practice - 1) Active transport plays an important...

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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 6) Roots do not exhibit positive pressure 7) The pressure-flow model is sufficient to explain water transport from roots to leaves
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This note was uploaded on 10/19/2008 for the course BIS 1c taught by Professor Maloof during the Spring '07 term at UC Davis.

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Midterm_1_Practice - 1) Active transport plays an important...

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