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

The Fossil Record Answers

9 verified answers
1
Free Preview

mammalsbacteriacells with a nucleusmulticellular organisms

A
mammals
B
bacteria
C
cells with a nucleus
D
multicellular organisms
2
Free Preview

The diagram shows a football field that represents a geological time scale.Why are no organisms labeled between the end zone and 30 yard line on the left side of the field?

Question illustration
A
Scientists disagree about the fossils from this time period.
B
Scientists have not studied that part of the time scale.
C
There is very little fossil evidence for this time period.
D
There are too many fossils to name.
4

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.
5

The diagram shows two different types of fossils from the same kind of ancient organism.

Question illustration
A
X: moldY: cast
B
X: castY: mold
C
X: traceY: imprint
D
X: imprintY: trace
6

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.
7

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.
8

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
9

How much time is needed to form most fossils?

A
a few months
B
a few years
C
hundreds of years
D
millions of years
10

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

Did you find these answers helpful?

More from this Course

Quiz
8 verified answers

The Fossil Record

Quiz
5 verified answers

The Fossil Record

Quiz
4 verified answers

Evidence for Evolution

The Fossil Record Answers — CV Q4 MJ Science 3…