Applied Biology 19.1

Multiple Choice

The fossil record is described as an incomplete record of life's history because

• many organisms are completely buried in volcanic ash

• fossils do not preserve accurately the once-living animal

• most fossils are formed in sedimentary rock

• many organisms die without leaving fossils

Multiple Select

A good index fossil (select all that apply)

• is easy to recognize

• had a wide geographic distribution

• lived for a short period of time

• is very rare

• lived for a long period of time

Multiple Choice

Carbon-14 dating would be useful in finding the age of

• fossils found in a layer of rock estimated to be between 15,00 & 25,000 years old

• fossil estimated to be over 200,000 years old

• sedimentary rock with a leaf imprint of undetermined age

• an index fossil known to have lived int eh oceans 1 million years ago

Multiple Choice

Divisions of the geologic time scale are largely based on

• equal periods of time

• major changes in teh fossil record

• historic fossil discoveries

• major events in human history

Multiple Choice

Similar fossils found along the east coast of South America and the west coast of Africa provide evidence to support the theory of

• natural selection

• plate tectonics

• geologic time

• continent displacement