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Plant Phys Exam 2
Plant Phys Exam 2
18
Biology
Undergraduate 4
11/13/2011

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Term
Stomatal Aperture
Definition
Opening in the stomate
Term
Radial Micellation
Definition
Cellulose microfibrils are arranged radially which influences the change in cell shape that results from increased turgor pressure
Term
Voltage-Gated Channels
Definition
Channel that opens when membrane potential changes
Term
Function of Photosynthesis
Definition
To produce reduced carbon compounds that can be used as energy or to build organic molecules
Term
Carotene
Definition
Pure hydrocarbons, red/orange pigment color
Term
Xanthophylls
Definition
Hydrocarbons that may have nitrogen or oxygen in their chemical structure yellow pigment
Term
Photon Fluence Rate
Definition
Measurement of light intensity (moles of photons/m^2 x seconds) reaching the plant's surface
Term
Energy Fluence Rate
Definition
Moles of energy/m2 x seconds of light energy hitting the plant
Term
Light Quality
Definition
mix of wavelengths reaching the plant
Term
P-proteins
Definition
Sieve tube members are cut they clump over the opening to prevent leakage of metabolites
Term
Photorespiration
Definition
Rubisco catalyzes the oxygenation of RuBP instead of carboxylation
Term
Kranz Anatomy
Definition
Bundle Sheath cells and closely spaced veins in C4 plants.
Term
Structure of Sieve Tube Members
Definition
Elongate thick primary cell wall, pores, cytoplasmic strands and sieve areas, lose some organelles such as: plastids, rough endoplasmic reticulum, nucleus, also have p-proteins
Term
Ordinary companion cells
Definition
Plasmodesmatal connections to sieve tube but not with other cells
Term
Sieve Element Companion Cell Complex (SECCC)
Definition
Sieve members plus ordinary companion cells
Term
Transfer cells
Definition
Cell walls with ingrowths to increase surface area
Term
Intermediary Cells
Definition
Plasmodesmatal Connections to all surrounding cells
Term
Pressure Flow Hypothesis
Definition
Bulk flow plus pressure gradient
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