Placer deposits are surface accumulations resulting from the mixing of materials as they are transported.
Indicate whether the statement is true or false
Question 2In the life cycle of a seedless vascular plant, ____ germinate and grow into small gametophyte plants.
A)sperm
B)pollen grains
C)spores
D)female cones
E)eggs
Question 3What are elongated, streamlined rock ridges in wind-dominated erosional areas called?
A)ventifacts
B)barchan dunes
C)longitudinal dunes
D)yardangs
E)desert pavement
Question 4Tar sand is a type of sandstone in which viscous, asphalt-like hydrocarbons fill the pore spaces.
Indicate whether the statement is true or false
Question 5Seedless vascular plants evolved which of the following features of modern plants?
A)seeds only
B)roots only
C)leaves only
D)secondary growth only
E)roots, leaves, and secondary growth
Question 6The primary method of erosion in arid regions is ____.
A)wind
B)water
C)frost wedging
D)ventification
E)sedimentation
Question 7Large fossils are more useful for environmental interpretations than are microfossils.
Indicate whether the statement is true or false
Question 8The earliest vascular land plants were characterized by which features?
A)seed-producing and rootless
B)seedless and root-bearing
C)seedless and rhizome-bearing
D)seed-bearing and rhizome bearing
E)seedless and rootless
Question 9Wind erosion occurs by ____.
A)saltation only
B)abrasion only
C)deflation only
D)saltation and abrasion
E)abrasion and deflation
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