Biology 172 Quiz 8

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tulipyoursweety
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246215
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Biology 172 Quiz 8
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2013-11-12 01:42:29
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Biology 172 quiz exam
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Plant transport process, plant nutrition
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  1. A plant cell immersed in pure water and at osmotic equilibrium will have a net water potential of
    0 MPa
  2. A water molecule could move all the way through a plant from soil to root to leaf to air and pass through a living cell only once. This living cell would be a part of which structure?
    the endodermis
  3. Guard cells are the only cells in the epidermis that contain chloroplasts and can undergo photosynthesis. This is important because
    ATP is required to power proton pumps in the guard cell membranes.
  4. Phloem transport of sucrose can be described as going from "source to sink." Which of the following would not normally function as a sink? 
    A.mature leaf
    B.shoot tip 
    C.growing leaf
    D.storage organ in summer 
    E.growing root 
    A.mature leaf
    (this multiple choice question has been scrambled)
  5. Root hairs are most important to a plant because they 
    A.contain xylem tissue. 
    B.provide a habitat for nitrogen-fixing bacteria. 
    C.store starches.
    D.anchor a plant in the soil.
    E.increase the surface area for absorption. 
    E.increase the surface area for absorption.
    (this multiple choice question has been scrambled)
  6. The value for ψ in root tissue was found to be -0.15 MPa. If you take the root tissue and place it in a 0.1 M solution of sucrose (ψ = -0.23), net water flow would
    A.occur only as ATP was hydrolyzed in the tissue. 
    B.be in both directions and the concentrations would remain equal. 
    C.be from the sucrose solution into the tissue.
    D.be impossible to determine from the values given here.
    E.be from the tissue into the sucrose solution. 
    E.be from the tissue into the sucrose solution.
    (this multiple choice question has been scrambled)
  7. Transpiration in plants requires all of the following except
    A.adhesion of water molecules to cellulose. 
    B.active transport through xylem cells. 
    C.evaporation of water molecules.
    D.transport through tracheids. 
    E.cohesion between water molecules. 
    B.active transport through xylem cells.
    (this multiple choice question has been scrambled)
  8. Which of the following would NOT contribute to water uptake by a plant cell? 
    A.an increase in tension on the surrounding solution
    B.the uptake of solutes by the cell 
    C.a decrease in the water potential of the cytoplasm
    D.an increase in the water potential of the surrounding solution 
    E.a decrease in pressure on the cell exerted by the cell wall 
    A.an increase in tension on the surrounding solution
    (this multiple choice question has been scrambled)
  9. A soil well suited for the growth of most plants would have all of the following properties except
    A.high cation exchange capacity. 
    B.abundant humus. 
    C.good drainage.
    D.a high pH. 
    E.air spaces.
    D.a high pH.
    (this multiple choice question has been scrambled)
  10. Carnivorous plants have evolved mechanisms that trap and digest small animals. The products of this digestion are used to supplement the plant's supply of 
    A.energy. 
    B.lipids and steroids. 
    C.water.
    D.carbohydrates.
    E.minerals. 
    E.minerals.
    (this multiple choice question has been scrambled)
  11. Nitrogen fixation is an important process for plants because it
    A.converts animal wastes into forms of nitrogen that plants can use 
    B.transforms organic nitrogen into inorganic nitrogen
    C.removes nutrients that otherwise would support harmful bacteria 
    D.removes toxic forms of nitrogen from the soil
    E.converts molecular nitrogen (N2) into forms of nitrogen that plants can use 
    E.converts molecular nitrogen (N2) into forms of nitrogen that plants can use
    (this multiple choice question has been scrambled)
  12. Symbiotic fungal filaments that increase the absorptive surface area of roots contribute to the formation of 
    A.bacteriods 
    B.symplasts
    C.root nodules
    D.mycorrhizae 
    E.haustoria 
    D.mycorrhizae
    (this multiple choice question has been scrambled)
  13. The N-P-K percentages on a package of fertilizer refer to the 
    A.total protein content of the three major ingredients of the fertilizer. 
    B.proportions of three different nitrogen sources.
    C.relative percentages of organic and inorganic nutrients in the fertilizer.
    D.percentages of manure collected from different types of animals. 
    E.percentages of three important mineral nutrients. 
    E.percentages of three important mineral nutrients.
    (this multiple choice question has been scrambled)
  14. Which of the following is a conservation practice that may be employed to minimize soil erosion in agriculture?
    A.contour tillage 
    B.ground-covering vegetation
    C.windbreaks 
    D.terracing hillsides 
    E.all of these
    E.all of these
    (this multiple choice question has been scrambled)
  15. Which of the following macronutrient of plants is commonly deficient and needs to be added to the soil for healthy plant growth?
    A.nitrogen 
    B.carbon 
    C.hydrogen 
    D.iron
    E.oxygen
    A.nitrogen
    (this multiple choice question has been scrambled)
  16. At low soil pH levels (5 or less), what can happen?
    Toxic aluminum ions become more available, stunting the plant's growth.

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