Question 1

What did the mass extinction at the end of the Ordovician set the stage for?

Accepted Answer

A)  more species to go extinct 
B)  groups of organisms to diversify 
C)  groups of organisms to withdraw from previous habitats 
D)  groups of organisms to repopulate abandoned niches 
E)  diversification and repopulation of abandoned niches 
A)  more species to go extinct 
B)  groups of organisms to diversify 
C)  groups of organisms to withdraw from previous habitats 
D)  groups of organisms to repopulate abandoned niches 
E)  diversification and repopulation of abandoned niches

Question 2

Which of the following is not an example of a pelagic organism?

Accepted Answer

A)  cephalopod 
B)  fish 
C)  algae 
D)  worm 
E)  foraminifera 
A)  cephalopod 
B)  fish 
C)  algae 
D)  worm 
E)  foraminifera

Question 3

What were the factors that made it difficult for animals to adapt to land?

Accepted Answer

On land,animals had to worry a

Question 4

Archaeocyathids can be characterized by all except which of the following?

Accepted Answer

A)  sessile 
B)  benthos 
C)  constructed reef-like structures 
D)  suspension feeder 
E)  sediment bottom feeder 
A)  sessile 
B)  benthos 
C)  constructed reef-like structures 
D)  suspension feeder 
E)  sediment bottom feeder

Question 5

The trilobite body was divided into three parts: a(n)____________________,a(n)____________________,and a(n)____________________.

Accepted Answer

cephalon (

Question 6

Three examples of zooplankton are____________________,____________________,and ____________________.

Accepted Answer

foraminife

Question 7

Describe the difference in cell division between echinoderms and chordates versus other invertebrates.

Accepted Answer

The cells of chordates and echinoderms d

Question 8

Eurypterids are a subclass of the cephalopods that are excellent guide fossils.

Accepted Answer

A) True 
 B)False

Question 9

Fish first evolved in a marine environment and later adapted to non-marine habitats.

Accepted Answer

A) True 
 B)False

Question 10

Because of the development of the jaw,fish changed their eating habits from being that of predators to filter feeders.

Accepted Answer

A) True 
 B)False

Question 11

Animals with rigid skeletons appeared abruptly in the fossil record at the beginning of the Paleozoic.

Accepted Answer

A) True 
 B)False

Question 12

What was the name of the earliest known reptile,and when did it evolve?

Accepted Answer

Westlothiana had evo

Question 13

What does the name Placoderm mean?

Accepted Answer

A)  plate-skinned 
B)  bony skin 
C)  scaly skin 
D)  spiny skin 
E)  fleshy skin 
A)  plate-skinned 
B)  bony skin 
C)  scaly skin 
D)  spiny skin 
E)  fleshy skin

Question 14

Three examples of phytoplankton are ____________________,____________________,and ____________________.

Accepted Answer

diatoms,di

Question 15

The Permian extinction was unequivocally related to an extraterrestrial impact.

Accepted Answer

A) True 
 B)False

Question 16

All chordates are vertebrates.

Accepted Answer

A) True 
 B)False

Question 17

An organism classified as an autotroph ____.

Accepted Answer

A)  is a carnivore 
B)  produces its own food 
C)  is at the top of the food chain 
D)  is a herbivore 
E)  has eyes 
A)  is a carnivore 
B)  produces its own food 
C)  is at the top of the food chain 
D)  is a herbivore 
E)  has eyes

Question 18

Describe the evolutionary history and importance of crossopterygians.

Accepted Answer

Crossopterygians are one of th

Question 19

What is the importance of Glossopteris?

Accepted Answer

Glossopteris was a fern that lived in no

Question 20

Plants are divided into which two major groups?

Accepted Answer

A)  coniferous and deciduous 
B)  vascular and spore-bearing 
C)  angiosperms and gymnosperms 
D)  vascular and non-vascular 
E)  seedless and non-seedless 
A)  coniferous and deciduous 
B)  vascular and spore-bearing 
C)  angiosperms and gymnosperms 
D)  vascular and non-vascular 
E)  seedless and non-seedless

Exam 21: Paleozoic Life History

What did the mass extinction at the end of the Ordovician set the stage for?

Which of the following is not an example of a pelagic organism?

What were the factors that made it difficult for animals to adapt to land?

Archaeocyathids can be characterized by all except which of the following?

The trilobite body was divided into three parts: a(n)____________________,a(n)____________________,and a(n)____________________.

Three examples of zooplankton are____________________,____________________,and ____________________.

Describe the difference in cell division between echinoderms and chordates versus other invertebrates.

Eurypterids are a subclass of the cephalopods that are excellent guide fossils.

Fish first evolved in a marine environment and later adapted to non-marine habitats.

Because of the development of the jaw,fish changed their eating habits from being that of predators to filter feeders.

Animals with rigid skeletons appeared abruptly in the fossil record at the beginning of the Paleozoic.

What was the name of the earliest known reptile,and when did it evolve?

What does the name Placoderm mean?

Three examples of phytoplankton are ____________________,____________________,and ____________________.

The Permian extinction was unequivocally related to an extraterrestrial impact.

All chordates are vertebrates.

An organism classified as an autotroph ____.

Describe the evolutionary history and importance of crossopterygians.

What is the importance of Glossopteris?

Plants are divided into which two major groups?

Understanding Earth: A Dynamic and Evolving Planet

Plate Tectonics: A Unifying Theory

Minerals The Building Blocks of Rocks

Igneous Rocks and Plutons

Volcanoes and Volcanism

Weathering, Erosion, and Soil

Sediment and Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Earthquakes and Earth's Interior

Deformation,Mountain Building,and Earth's Crust

Mass Wasting

Running Water Streams and Rivers

Groundwater

Glaciers and Glaciation

The Work of Wind and Deserts

Oceans, Shorelines, and Shoreline Processes

Geologic Time: Concepts and Principles

Organic Evolution The Theory and Its Supporting Evidence

Precambrian Earth and Life History

Paleozoic Earth History

Mesozoic Earth and Life History

Cenozoic Earth and Life History

Geology in Perspective

Filters

The trilobite body was divided into three parts: a(n),a(n),and a(n).

Three examples of zooplankton are,,and .

Three examples of phytoplankton are ,,and .