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Life Science Chapter 8
Test Description: History of Life on Earth
Instructions: Answer all questions to get your test result.
1) Paleontologist use _______________ to estimate the age of a fossil based on the layer in which it is found.
A
Radiometric Dating
B
Carbon-14 Dating
C
Absolute Dating
D
Relative Dating
2) Dinosaurs dominated the Earth during the _______________, some 200 million years ago.
A
Mesozoic Era
B
Cenozoic Era
C
Precambrian Time
D
Paleozoic Era
3) Some important divisions of geologic time are marked by______________.
A
A certain number of years
B
Mass Extinctions
C
The type of homInid alive
D
Mass Speciations
4) The first primate ancestors, called ___________, appeared during the Cenozoic era.
A
homo erectus
B
homo sapiens
C
prosimians
D
australopithecines
5) Although _____________ had thicker and heavier bones than present-day humans, they appear to be our closest ancestors.
A
homo habilis
B
homo erectus
C
Cro-magnons
D
Neanderthals
6) Cyanobacteria, which first appeared on Earth over 3 billion years ago, are
A
dinosaurs
B
eukaryotes
C
terrestrial organisms
D
prokaryotes
7) Which of the following is characteristic of ALL primates?
A
bipedalism
B
binocular vision
C
vertical pelvis
D
opposable big toes
8) Which of the following is characteristic of ALL primates?
A
horizontal pelvis
B
monocular vision
C
opposable thumbs
D
bipedalism
9) Which group of hominids that lived in Europe and Asia disappeared form the fossil record about 30,000 years ago?
A
homo sapiens
B
Neanderthals
C
australopithecines
D
homo erectus
10) Past mass extinctions most likely occured as a result of ________.
A
predator-prey changes
B
oxygen pollution
C
ozone depletion
D
global climate change
11) The first organisms to appear on Earth were
A
aerobic
B
multi-cellular
C
eukaryotes
D
anaerobic
12) Which occurred first in hominid evolution, an enlarged brain or the ability to walk upright?
A
they occurred at the same time
B
neither of these occurred in hominid evolution
C
enlarged brain
D
ability to walk upright
13) Plants and air-breathing animals appeared during this time period.
A
Precambrian time
B
Paleozoic Era
C
Cenozoic Era
D
Mesozoic Era
14) Most ancient hominids are called ____________.
A
australopithecines
B
Cro-magnons
C
prosimians
D
Neanderthals
15) The Age of Mammals refers to the _______________.
A
Paleozoic Era
B
Cenozoic Era
C
Precambrian Time
D
Hadeon Eon
16) The Age of Reptiles refers to the ______________.
A
Mesozoic Era
B
Cenozoic Era
C
Paleozoic Era
D
Archaen Eon
17) How old do scientist estimate the age of the Earth to be?
A
14.8 Billion Years
B
4.6 Billion Years
C
10,000 Years
D
400 Million Years
18) An ape is a hominid.
A
False
B
True
19) Traces or imprints of living things preserved in rock are called __________.
A
fossils
B
frozen fossils
C
sedimentary rock
D
skeletons
20) The amount of time it takes for half of the unstable atoms in an element to decay is called the _________.
A
relative age
B
absolute age
C
radiometric life
D
half-life
*select an answer for all questions
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