Details

Title: 1020 Unit 5

Description: Unit 5

Total Flash Cards: 22

Created: 04/06/2009 14:11:00

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Cards in this set:

Term
Absorption
 Definition
light energy that is retained by pigment molecules
Term
absorption spectrum
 Definition
a grapd showing the amount of light absorbed by individual pigments at various wavelengths
Term
accessory pigments
Definition
molecules that absorb light energy and pass it to chlorphyll A
Term
action spectrum
 Definition
a graph showing overall photosynthetic activity by a plant
Term
carotene
 Definition
an accessory orange-colored pigment
Term
chloroyphyll a
 Definition
the green pigment of photosynthesis
Term
chloroyphyll b
 Definition
an accessory green pigment
Term
chromatogram
 Definition
a "developed" chromatography strip in which pigments have been seperated from one another
Term
cuticle
 Definition
a waxy non-cellular layer on the outer surface of the plant leaf
Term
energy
 Definition
the capacity to do work
Term
epidermis
 Definition
outermost layer of cells in plant expecially leaves
Term
guard cells
 Definition
specialized epidermal cells that occur in pairs on leaf surfaces
Term
palisade layer
 Definition
chloroplasts-bearing cells in the interior that have long axes
Term
chromatography
 Definition
a method of seperating pigment molecules from a solution
Term
photosynthesis
 Definition
a complex series of reactions in which plants turn light energy into food
Term
pigment
 Definition
a molecule that absorbs light
Term
reflection
 Definition
light energy that is not absorbed by pigment molecule
Term
Rf
 Definition
the distance the pigment traveled to the distance the solvent moved
Term
spongy layer
 Definition
loosley-packed chloroplasts-bearing cells in the interior of leaves
Term
stomata
 Definition
opening on leaf surfaces through which air passes
Term
transmission
 Definition
light energy that is not absorbed by an object
Term
wavelength
 Definition
a measure of the quality of light