The general term for long-distance transport of substances in plants is called ____
a. cohesion-tension
b. translocation
c. pressure flow
d. osmosis
e. transpiration
ANSWER: b
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Crowding ____
a. has a positive effect on reproduction b. decreases the growth rate of individuals c. only occurs in plant species d. causes immigration e. stimulates developmental and behavioral changes
Which biome is pictured here?
a. temperate deciduous forest b. chaparral c. tropical rainforest d. temperate grassland e. boreal forest
Water can diffuse directly across lipid bilayers, but ions cannot. What aids the ions in water in entering or exiting a
cell? a. transport proteins in a cell’s cytoplasm b. transport proteins in a cell’s plasma membrane c. sugars produced in source regions d. organic compounds stored in plant tissues e. companion cells
New genetic combinations result from
a. crossing over. b. sexual reproduction. c. mutations. d. exchange of genes between different species. e. all of these