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S2 Biology Plants
glossary flashcards
28
Biology
Not Applicable
03/19/2016

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Term
chloroplast
Definition
structure in plants cells that contains the chlorophyll
Term
chlorophyll
Definition
green pigment in plant cells that absorbs light energy for photosynthesis
Term
carbon dioxide & water
Definition
two raw materials of photosynthesis
Term
oxygen & glucose
Definition
two products of photosynthesis
Term
light->chemical
Definition
energy change that takes place in plants as a result of photosynthesis
Term
photosynthesis
Definition
the process carried out by plants that uses light energy to make food
Term
starch
Definition
chemical used a food store by plants
Term
iodine
Definition
chemical used to test for starch
Term
variegated
Definition
a plant whose leaves have areas that lack chlorophyll and are white
Term
elodea
Definition
an aquatic plant often used to investigate factors affecting the rate of photosynthesis
Term
independent variable
Definition
the one variable that is changed in an investigation
Term
dependent variable
Definition
the variable that is measured as the results in a an investigation
Term
light intensity
Definition
a factor that when increased, increases the rate of photosynthesis as it provides more energy
Term
carbon dioxide concentration
Definition
a factor that when increased, increases the rate of photosynthesis as it provides more raw material
Term
temperature
Definition
a factor that when increased, increases the rate of photosynthesis up to a point, after which further increases reduce the rate of photosynthesis
Term
limiting factors
Definition
any factor that can reduce the rate of a process when in short supply
Term
% change calculation
Definition
change / original X 100
Term
upper epidermis
Definition
top layer of cells in a leaf, allows light through to mesophyll layer
Term
mesophyll
Definition
middle layer of cells in a leaf, main site of photosynthesis
Term
air spaces
Definition
allow diffusion of gases in a leaf
Term
veins
Definition
bring water to the leaf and take glucose away
Term
lower epidermis
Definition
bottom layer of cells in a leaf
Term
guard cells
Definition
control the opening and closing of stomata
Term
stomata
Definition
tiny holes in a leaf to allow gas exchange
Term
germination
Definition
development of a seed into a new plant (WOW are needed)
Term
average
Definition
add a list of numbers, divide the total by the number of numbers added
Term
bulb, tuber, runner, plantlet
Definition
four natural methods of asexual reproduction in plants
Term
commercial uses of plants
Definition
food, fuel, raw materials, medicine, aesthetics (make surroundings look nice)
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