100 Multiple choice
he timescale of evolution is…
Can take thousands of generations for speciation
Can happen in a few generations
Can occur in the lifetime of one organism
All of the above
A and B only
Which is the most common way that organisms are preserved in the fossil record?
Unaltered hard parts
Altered hard parts
Unaltered soft parts
Altered soft parts
Which of the following is most likely to be preserved in the fossil record?
A pelagic jellyfish
A worm living on land
An epifaunal sea cucumber
An infaunal clam
Which is true about relative and absolute dating?
Relative dating can only include sedimentary rock layers; absolute dating can be done on all rock types.
Relative dating is putting rocks and fossils in order of their occurrence in the record; absolute dating is assigning numerical ages to them.
Steno’s Laws apply to absolutely dating rocks and fossils, but not to relatively dating them.
Only absolute dating is useful for geology and paleontology.
The earliest tetrapods:
Evolved from lobe-finned fish.
Were characterized by only two limbs.