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Chapter 19 History of Life Flashcards | StudBud
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Chapter 19 History of Life
Chapter 19 History of Life
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1
How would you date a rock that you think might be as old as the earth?
using index fossils
using a radioactive isotope with a short half life
using a radioactive isotope with a long half life
relative dating
2
What tends to happen after mass extinctions?
the end of the world
a new chapter
places species in genetic equilibrium
encourages rapid evolution by opening new niches
3
The length of time it takes for half a radioactive substance to decay into its stable form is..
relative dating
radioactive dating
half life
phylogeny
4
How would Darwin explain the similarities of the organisms pictured?
adaptive radiation
convergent evolution
speciation
homologous structures
5
Which of the following would be an example of a cause of mass extinction?
a wildfire burns down a national forest
a diseases kills off every cat on the planet
A massive hurricane hits North America
Global temps increase 10 degree F and every volcano errupts
6
How were proteinoid microspheres like cells?
they have DNA
have both a semipermeable membrane and way of storing energy
they have ways of storing and releasing energy
they are semipermedable
7
_______ occurs when organisms have a long, stable period of time interrupted by rapid evolution
adaptive radiation
convergent evolution
punctuated equlibrium
gradualism
8
Fossil provide information for scientists about which of the following....
All of these
niche
skeletal structure
habitat
9
Which of the following was NOT a major component of the Earth's early atmosphere?
methane
carbon dioxide
Free oxygen
water vapor
10
A popular hypothesis states that _____ evolved before ______.
chickens, eggs
RNA, DNA
DNA, RNA
eggs, chickens
11
When scientists want to compare the relative ages of rocks they the depth of the rock layer and
the type of rock
half life
index fossils
radioactive dating
12
What theory explains why the continents can be placed together like pieces of a puzzle?
punctuated equilibrium
Plate techtonics
superposition
Big bang
13
Horseshoe crabs have remained the about same for millions of years. This species is probably..
undergoing gradulaism
convergent evolution
coevolution
undergoing punctuated equilibrium
14
Most fossils are found in ___________ rock.
sedimentary
igneous
volcanic
metamorphic
15
Did oceans exist 4 billion years ago?
no, water was only found in a gaseous state
no, the earth lacked water in any form
yes, there was plenty of water on earth
yes, that is why we are known as the water planet
16
According to the endosymbiotic theory, eukaryotic cells came from ____.
prokaryotic cells
communities formed by several different kinds of prokaryotes
multi cellular fungi
communities formed by multiple eukaryotes
17
What are the characteristics of good index fossils?
lived a long time with a small range
lived a short time with a small range
lived a long time with a wide range
lived a short time with a wide range
18
______ is the slow, steady evolution of an organism over time.
punctuated equilibrium
gradualism
genetic equilibrium
convergent evolution
19
Darwin's finches in the picture have undergone what process?
convergent evolution
adaptive radiation
genetic equilibrium
punctuated equilibrium
20
Which of the following has shaped the physical features of the earth?
physical forces
neither physical forces and biological forces
both physical forces and biological forces
biological forces
