Geography and Earth Sciences

The ammonoids are excellent guide fossils because of distinctive physical features, a short life ...

The ammonoids are excellent guide fossils because of distinctive physical features, a short life ...

The ammonoids are excellent guide fossils because of distinctive physical features, a short life span, and a wide
  geographic distribution.
  a. True
  b. False

keelyhawkins   71   1 Reply

yuenc

Invertebrates are always animals with shells.

Invertebrates are always animals with shells.

Invertebrates are always animals with shells.
  a. True
  b. False

jkidane1829393   63   1 Reply

leg17

Devonian mass extinctions may have been partly caused by global tectonic changes as the collision of ...

Devonian mass extinctions may have been partly caused by global tectonic changes as the collision of ...

Devonian mass extinctions may have been partly caused by global tectonic changes as the collision of continents
  reduced the amount of shallow marine shelf environment.
  a. True
  b. False

panda_buhr   33   2 Replies

panda_buhr

Organisms that comprised reef complexes remained virtually unchanged during the Paleozoic.

Organisms that comprised reef complexes remained virtually unchanged during the Paleozoic.

Organisms that comprised reef complexes remained virtually unchanged during the Paleozoic.
  a. True
  b. False

tamaraco   62   1 Reply

Princessklo

The extinction event at the end of the Permian affected only land-dwelling organisms.

The extinction event at the end of the Permian affected only land-dwelling organisms.

The extinction event at the end of the Permian affected only land-dwelling organisms.
  a. True
  b. False

Coco   41   1 Reply

scatherine

Trilobites, an abundant organism during the Early Paleozoic and less abundant during the Late ...

Trilobites, an abundant organism during the Early Paleozoic and less abundant during the Late ...

Trilobites, an abundant organism during the Early Paleozoic and less abundant during the Late Paleozoic, survived to
  the Cenozoic.
  a. True
  b. False

jaypatel432   81   1 Reply

Wilkinson

Foraminifera and jellyfish are examples of zooplankton.

Foraminifera and jellyfish are examples of zooplankton.

Foraminifera and jellyfish are examples of zooplankton.
  a. True
  b. False

thebeagle96   25   1 Reply

Icgcyvfiifctcit

Diatoms and algae are examples of phytoplankton.

Diatoms and algae are examples of phytoplankton.

Diatoms and algae are examples of phytoplankton.
  a. True
  b. False

alexisangelique   61   1 Reply

Astalina

In the marine ecosystem, a fish would be classified as infaunal and benthic.

In the marine ecosystem, a fish would be classified as infaunal and benthic.

In the marine ecosystem, a fish would be classified as infaunal and benthic.
  a. True
  b. False

alexisangelique   23   1 Reply

skalass

An extinct group of arthropods with a body divided into three lobes is a(n) ____.

An extinct group of arthropods with a body divided into three lobes is a(n) ____.

An extinct group of arthropods with a body divided into three lobes is a(n) ____.
  a. crinoid
  b. acritarch
  c. organelle
  d. trilobite
  e. echinoid (echinoderm

anvaridthe   33   1 Reply

skalass

Any animal that eats other animals, living or dead, as a source of nutrients is a(n) ____.

Any animal that eats other animals, living or dead, as a source of nutrients is a(n) ____.

Any animal that eats other animals, living or dead, as a source of nutrients is a(n) ____.
  a. ectotherm
  b. endotherm
  c. suspension feeder
  d. carnivore-scavenger
  e. herbivore

Leikakei113   48   2 Replies

Leikakei113

All bottom-dwelling marine organisms that live on the seafloor or within seafloor sediment are ____. ...

All bottom-dwelling marine organisms that live on the seafloor or within seafloor sediment are ____. ...

All bottom-dwelling marine organisms that live on the seafloor or within seafloor sediment are ____.
  a. anomalocaris
  b. benthos
  c. nektons
  d. chordates
  e. ammonoids

lexilourdes   53   1 Reply

joanneanna

Greatly accelerated extinction rates resulting in marked decrease in biodiversity are ____.

Greatly accelerated extinction rates resulting in marked decrease in biodiversity are ____.

Greatly accelerated extinction rates resulting in marked decrease in biodiversity are ____.
  a. transgressions
  b. regressions
  c. mass extinctions
  d. evolutionary nonstarters
  e. evolutionar

emalay516   26   1 Reply

karlyphilpott

The Cambrian explosion refers to ____.

The Cambrian explosion refers to ____.

The Cambrian explosion refers to ____.
  a. a meteorite impact
  b. a sudden appearance of fossils
  c. a sudden extinction
  d. the start of evolution
  e. volcanism that created the Ring of Fire

riveraes   37   1 Reply

Icgcyvfiifctcit

The unique preservation of soft-bodied fauna in the Burgess Shale occurred because ____.

The unique preservation of soft-bodied fauna in the Burgess Shale occurred because ____.

The unique preservation of soft-bodied fauna in the Burgess Shale occurred because ____.
  a. animals and plants were carried by turbidity flows to aerobic deep-sea conditions
  b. animals and plants were transported and buried

joewalcott24   71   1 Reply

yuenc

Which group feeds on microscopic plants, animals, and nutrients in water?

Which group feeds on microscopic plants, animals, and nutrients in water?

Which group feeds on microscopic plants, animals, and nutrients in water?
  a. herbivores
  b. carnivores
  c. sediment-deposit feeders
  d. suspension feeders
  e. inhalation feeders

Madam   61   1 Reply

dalenambawan

Archaeocyathid, bryozoan, and stromatoporoid fossils indicate which type of environment?

Archaeocyathid, bryozoan, and stromatoporoid fossils indicate which type of environment?

Archaeocyathid, bryozoan, and stromatoporoid fossils indicate which type of environment?
  a. deep sea
  b. tidal flats
  c. delta
  d. lake
  e. reef

apich   114   1 Reply

dalenambawan

An organism classified as an autotroph has which of the following characteristics?

An organism classified as an autotroph has which of the following characteristics?

An organism classified as an autotroph has which of the following characteristics?
  a. It is a carnivore.
  b. It produces its own food.
  c. It is at the top of the food chain.
  d. It is an herbivore.

ibukunsulie85   39   1 Reply

DJF101814

Which characteristic does not apply to trilobites?

Which characteristic does not apply to trilobites?

Which characteristic does not apply to trilobites?
  a. abundant in modern oceans
  b. excellent guide fossils
  c. benthos, mobile
  d. sediment-deposit feeder
  e. invertebrate

neonfayt   46   2 Replies

neonfayt

Shallow water fauna and phytoplankton are stressed during glaciations due to ____.

Shallow water fauna and phytoplankton are stressed during glaciations due to ____.

Shallow water fauna and phytoplankton are stressed during glaciations due to ____.
  a. rising sea levels
  b. warming surface waters
  c. changing isotope ratios
  d. lower sea levels
  e. reduced

lexilourdes   112   1 Reply

scatherine

Organisms that move on the seafloor are called ____, while organisms that do not move are called ...

Organisms that move on the seafloor are called ____, while organisms that do not move are called ...

Organisms that move on the seafloor are called ____, while organisms that do not move are called ____.
  a. articulate; inarticulate
  b. articulate; stationary
  c. mobile; sessile
  d. sessile; inarticulat

nurse12   81   1 Reply

DJF101814

Mass extinctions at the end of the Ordovician occurred because of ____.

Mass extinctions at the end of the Ordovician occurred because of ____.

Mass extinctions at the end of the Ordovician occurred because of ____.
  a. dramatic changes related to glaciation
  b. dramatic chemical changes in seawater related to meteorite impact
  c. increased solar radiation

Wutwut12   58   1 Reply

srw23557

From a human time perspective, mass extinctions ____.

From a human time perspective, mass extinctions ____.

From a human time perspective, mass extinctions ____.
  a. are rapid
  b. are gradual
  c. are immediately recognizable
  d. involve a complete wipeout of all living organisms
  e. only occu

emalay516   544   1 Reply

selica

Mass extinctions occurred at the end of the ____.

Mass extinctions occurred at the end of the ____.

Mass extinctions occurred at the end of the ____.
  a. Cambrian, Devonian, and Mississippian
  b. Ordovician, Silurian, and Devonian
  c. Ordovician, Devonian, and Permian
  d. Silurian, Devonian, and Permia

Johnni   53   1 Reply

icysparkles

How can we classify phytoplankton within a food web?

How can we classify phytoplankton within a food web?

How can we classify phytoplankton within a food web?
  a. decomposer
  b. primary consumer
  c. primary producer
  d. secondary consumer
  e. secondary producer
 
 

ibukunsulie85   49   1 Reply

ebwilliams25

The mass extinction in the geologic record, which proved to be the most devastating to life on ...

The mass extinction in the geologic record, which proved to be the most devastating to life on ...

The mass extinction in the geologic record, which proved to be the most devastating to life on Earth, occurred at the
  end of the ____.
  a. Cambrian
  b. Cretaceous
  c. Devonian
  d. Ordovician

yxc47   26   1 Reply

Jmassey95

If you were transported back in time to the Cambrian Period, the mobile marine organisms that would ...

If you were transported back in time to the Cambrian Period, the mobile marine organisms that would ...

If you were transported back in time to the Cambrian Period, the mobile marine organisms that would be most
  conspicuous would be ____.
  a. brachiopods
  b. crinoids
  c. sharks
  d. trilobites

ggull329   46   1 Reply

Xuantunich

The most likely way volcanic activity could have contributed to the Permian mass extinction is by ...

The most likely way volcanic activity could have contributed to the Permian mass extinction is by ...

The most likely way volcanic activity could have contributed to the Permian mass extinction is by ____.
  a. destroying habitat
  b. raising local temperatures
  c. inhibiting rain fall
  d. killing primary

gi.x3   44   1 Reply

Wilkinson

A stratified ocean in the Late Permian could have been caused by ____.

A stratified ocean in the Late Permian could have been caused by ____.

A stratified ocean in the Late Permian could have been caused by ____.
  a. global warming
  b. global cooling
  c. ocean circulation
  d. increased downwelling
  e. decreasing population of trilob

Coco   57   1 Reply

joanneanna

The Great Biodiversification Event occurred during the ____.

The Great Biodiversification Event occurred during the ____.

The Great Biodiversification Event occurred during the ____.
  a. Ordovician
  b. Silurian
  c. Devonian
  d. Mississippian
  e. Permian

thebeagle96   35   1 Reply

tysonras

The Permian extinction killed approximately ____ of all marine invertebrate species.

The Permian extinction killed approximately ____ of all marine invertebrate species.

The Permian extinction killed approximately ____ of all marine invertebrate species.
  a. 54
  b. 66
  c. 70
  d. 83
  e. 96

apich   69   1 Reply

JoshYar

Plankton and nekton are different because ____.

Plankton and nekton are different because ____.

Plankton and nekton are different because ____.
  a. plankton are pelagic
  b. plankton are benthic
  c. plankton float
  d. nekton float
  e. nekton are benthic

Kimstudies   84   1 Reply

busfuohrugf

Jellyfish are ____. (Multiple Choice)

Jellyfish are ____. (Multiple Choice)

Jellyfish are ____.
  a. pelagic plankton
  b. benthic plankton
  c. benthic nektons
  d. pelagic nektons
  e. pelagic articulates

gi.x3   115   1 Reply

karlyphilpott

Organisms that belong to the benthos are classified primarily by ____.

Organisms that belong to the benthos are classified primarily by ____.

Organisms that belong to the benthos are classified primarily by ____.
  a. where they live and if they move
  b. where they live and how they reproduce
  c. how they reproduce and if they move
  d. life spa

Mroche   47   1 Reply

meek2199

____________________ make their own food. (Fill in the blank)

____________________ make their own food. (Fill in the blank)

____________________ make their own food. Fill in the blank(s) with the appropriate word(s).

Leikakei113   42   2 Replies

Leikakei113

Pelagic organisms can be divided into floaters, called ____________________, and swimmers, called ...

Pelagic organisms can be divided into floaters, called ____________________, and swimmers, called ...

Pelagic organisms can be divided into floaters, called ____________________, and swimmers, called
  ____________________. Fill in the blank(s) with the appropriate word(s).

lindseyb1220   38   1 Reply

meek2199

Flood basalts from the ____________________ ____________________ could have depleted ozone levels ...

Flood basalts from the ____________________ ____________________ could have depleted ozone levels ...

Flood basalts from the ____________________ ____________________ could have depleted ozone levels and
  contributed to the Permian mass extinction. Fill in the blank(s) with the appropriate word(s).

sunil1285   24   1 Reply

Jmassey95

The different tiers of food production and consumption in an ecosystem within a feeding hierarchy ...

The different tiers of food production and consumption in an ecosystem within a feeding hierarchy ...

The different tiers of food production and consumption in an ecosystem within a feeding hierarchy are called
  ____________________ ____________________. Fill in the blank(s) with the appropriate word(s).

Leikakei113   27   1 Reply

asapchigga

The ____________________ ____________________ provides paleontologists with a unique look at the ...

The ____________________ ____________________ provides paleontologists with a unique look at the ...

The ____________________ ____________________ provides paleontologists with a unique look at the soft-bodied
  organisms that thrived in the Middle Cambrian. Fill in the blank(s) with the appropriate word(s).

Coco   31   1 Reply

DJF101814

The ____________________ are tooth-like calcium phosphatic fossils that are excellent index fossils ...

The ____________________ are tooth-like calcium phosphatic fossils that are excellent index fossils ...

The ____________________ are tooth-like calcium phosphatic fossils that are excellent index fossils for the
  Ordovician. Fill in the blank(s) with the appropriate word(s).

thebeagle96   75   1 Reply

joanneanna