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The History Of Life On Earth Part 1 Of 2
Test Description: Part 1 of 2
Instructions: Answer all questions to get your test result.
1) About how many years ago did Earth form?
A
455 million
B
4.55 billion
C
45.5 billion
D
4.55 million
2) How was Earth's atmosphere likely affected by the development of photosynthesis?
A
levels of oxygen increased
B
the atmosphere became more cloudy
C
the atmosphere became cooler
D
levels of poisonous gases increased
3) Prokaryotes are unicellular organisms that do not contain
A
ribosomes
B
a nucleus
C
a cell membrane
D
a cell wall
4) Eukaryote life began ___________ prokaryote life.
A
at the same time as
B
before
C
as a result of the extinction of
D
after
5) Which of the following is evidence for the common origin of all life on Earth?
A
All life has DNA as hereditary material.
B
All life is eukaryotic.
C
All life needs oxygen to survive.
D
All life has cell walls.
6) Why is sexual reproduction critical to the process of evolution?
A
Sexual reproduction produces stronger organisms than asexual reproduction.
B
Sexual reproduction can produce more offspring than asexual reproduction.
C
Sexual reproduction results in organisms that are genetically identical to their parents.
D
Sexual reproduction results in offspring with more genetic variety than asexual reproduction.
7) Why might it be more difficult to find fossilized remains of simple animals?
A
both A and B
B
neither A or B
C
Simple animals lack bones.
D
Simple animals are too small to see.
8) When did non-avian dinosaurs become extinct?
A
65 million years ago
B
110 million years ago
C
25 million years ago
D
460 million years ago
9) What event likely led to the extinction of non-avian dinosaurs?
A
A large ocean wave swept over most of the continents.
B
A massive asteroid struck Earth.
C
A disease occurred that affected only dinosaurs.
D
Mammals were predators of the species.
10) The die-off of non-avian dinosaurs 65 million years ago is an example of a
A
episodic speciation
B
mass extinction
C
gradual extinction
D
population explosion
11) Rats and opossums are modern examples of __________, which first appeared 200 million years ago.
A
mammals
B
amphibians
C
birds
D
insects
12) What is an evolutionary tree diagram?
A
a diagram that groups organisms based on what they eat
B
a diagram that lists the time period in which a group of organisms evolved
C
a diagram composed of only one species of organisms
D
a diagram that shows evolutionary relationships between organisms
13) In an evolutionary tree diagram, which two organisms are least closely related?
A
organisms that are separated by at least one other organism
B
the two organisms that are farthest apart
C
the two organisms closest to each other
D
none of these
14) Two organisms branch from the same point on an evolutionary tree diagram. The point that they branch from represents a(n)
A
common ancestor
B
future species
C
direct descendant
D
unrelated organism
*select an answer for all questions
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