AnswersCV Q4 MJ Science 3 Adv 2002110 Compacted Review of Grade.7.Life for SSA PrepThe Fossil Record

The Fossil Record Answers

8 verified answers1 views
1
Free Preview

Which condition is necessary for a mold fossil to form?

A
The fossil must be preserved in amber.
B
Minerals must replace the remains.
C
The mold must be filled with sediment.
D
Hard parts of the organism must dissolve.
2
Free Preview

Compared to absolute dating, what is an advantage of relative dating?

A
A single fossil can be dated by itself.
B
The actual age of a fossil can be determined.
C
Fossils do not need to be arranged in different layers of rock.
D
There is no limit to the age range of the fossils being dated.
3

According to the fossil record, which of these evolved after amphibians? Select two options.mammalsspongesfishbacteriareptiles

A
mammals
B
sponges
C
fish
D
bacteria
E
reptiles
4

Which pair of elements can be used to determine the age of a fossil that is over one billion years old?

A
lead, which is radioactive, and uranium, which is stable
B
carbon, which is radioactive, and nitrogen, which is stable
C
argon, which is radioactive, and lead, which is stable
D
potassium, which is radioactive, and argon, which is stable
5

The diagram shows fossils buried in layers of sediment.

Question illustration
A
The fossil in layer Z is the youngest.
B
The fossils in layers Y and Z are younger than the fossil in layer V.
C
The fossil in layer Y is older than the fossil in layer W.
D
The fossil in layer X is older than the fossil in layer Z.
6

Alex listed the typical steps of fossil formation.1) An organism dies.2) The remains fall to the bottom of the ocean.3) The soft portions decay, and the hard portions remain.4) The sediment becomes rock.

A
After step 3, layers of sediment cover the dead organism.
B
After step 1, minerals dissolve the dead organism.
C
After step 4, layers of sediment cover the dead organism.
D
After step 2, minerals dissolve the dead organism.
7

The diagram shows fossils buried in layers of rock.

Question illustration
A
Trilobites and gastropods are the youngest fossils.
B
Crinoids and gastropods have lived during the same time period.
C
Ferns have existed for a longer period of time than coral.
D
Every ammonite fossil is older than the gastropod fossils.
8

Three different reptile skulls with a common ancestor show that the skull changed from having no holes behind the eye to having one hole, and then two holes behind the eye.What conclusion did scientists draw about the reptile?

Question illustration
A
The skull evolved as the reptile developed stronger jaws.
B
The reptile evolved from living in water to living on land.
C
The reptiles were different ages when they died.
D
The reptile was never properly preserved during fossil formation.

Did you find these answers helpful?

More from this Course

Quiz
9 verified answers

The Fossil Record

Quiz
5 verified answers

The Fossil Record

Quiz
4 verified answers

Evidence for Evolution