Transport through the phloem(2)
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Assessment
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Coach Tayo
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Biology
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University
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50 plays
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Hard
Student preview
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20 questions
Show answers
1.
Multiple Choice
moving sucrose into the sieve tube element
removing protons out of the cytoplasm of the companion cell into the surrounding
removing protons from the sieve tube element
taking up sucrose into the cytoplasm of the companion cell
2.
Multiple Choice
transport of sucrose together with protons out of the companion cells
transport of sucrose together with protons into the companion cells
trasnport of sucrose together with protons into the mesophyl cells
transport of sucrose together with protons out of the sieve tube elements
3.
Multiple Choice
active transport of protons out of the sieve tube elements
active transport of protons out of the mesophyl cells
active transport of protons out of the companion cells
active transport of protons out of the xylem vessel elements
4.
Multiple Choice
presence of plasmodesmata connecting them to sieve tube element
presence of cotransport proteins on their cell surface membranes
presence of proton pumps on their cell surface membrane
presence of golgi apparatus for packaging and modifying assimilates
5.
Multiple Choice
active loading of sucrose into sieve elements at the source, increased hydrostatic pressure, mass flow, unloading at the sink
hydrolysis of storage compounds in sinks, lowered water potential, unloading of sucrose from sieve elements, mass flow from the source
lowered pressure in sieve elements at the source, movement of sucrose down the pressure gradient, mass flow down a diffusion gradient to the sink
mass flow of dissolved sucrose into the sieve elements at the source, lowered hydrostatic pressure, diffusion of sucrose to sink, active unloading
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