Question 1

Molluscs were the first organisms to have a(an)  ______ body plan and well-developed organ systems.

Accepted Answer

A)   acoelomate
B)   pseudocoelomate
C)   coelomate

Question 2

Over the past 30 years, the arthropod population had declined by approximately

Accepted Answer

A)   80%.
B)   50%.
C)   25%
D)   10%.

Question 3

Phylogenetic trees relate organisms

Accepted Answer

A)   based on homologous structures.
B)   based on their evolutionary relationships.
C)   using their ribosomal RNA.
D)   All of the answer choices are correct.

Question 4

Which of the following species belongs in the jawless class of fish?

Accepted Answer

A)   Lamprey
B)   Rays
C)   Trout
D)   Ancient fish

Question 5

Sexual reproduction in fungi is through a process called ______ that results the formation of a zygote.

Accepted Answer

A)   nuclear fusion
B)   binary fission
C)   mitosis
D)   sporulation

Question 6

Invertebrates are separated from vertebrates by not

Accepted Answer

A)   having a backbone.
B)   conducting cellular respiration.
C)   producing offspring by sexual reproduction.
D)   being affected by the extinction crisis.

Question 7

Which supergroup consists of dinoflagellates and parasitic sporozoans?

Accepted Answer

A)   Excavata
B)   Rhizaria
C)   Chromalveolata
D)   Opisthokonta

Question 8

Fragmented habitats are those that prevent movement of species and promote inbreeding and reduced reproduction.

Accepted Answer

A) True 
 B)False

Question 9

New species form over time in response to

Accepted Answer

A)   adaptations that allow for survival in different environments.
B)   events that promote rapid changes in a species.
C)   isolation of organisms from one another.
D)   All of the answer choices are correct.

Question 10

What are the characteristics of the rhizaria supergroup?

Accepted Answer

A)   Consists of ancestors to modern plants
B)   Organisms in this supergroup have pseudopods
C)   Organisms in this group have flagellated cells at some point in their life cycle
D)   This is the most diverse group that are closely related based on their genetic information

Question 11

What were the two key events needed for the first cells to evolve?

Accepted Answer

A)   the formation of the plasma membrane and genetic material
B)   the formation of the cell wall and genetic material
C)   the formation of a capsule and the plasma membrane
D)   the formation of the pilus and the flagella

Question 12

Which of the following evolutionary events happened during the Mesozoic Era?

Accepted Answer

A)   Modern humans appear
B)   Placental mammals appear
C)   Reptiles appear
D)   Oxygen accumulates in the atmosphere

Question 13

Jellyfish were the first to evolve with True tissues. This led to a(an)

Accepted Answer

A)   increase in specialized cells.
B)   increase in motility.
C)   decrease in asexual reproduction.
D)   decrease in evolutionary advances.

Question 14

Which of the following evolutionary events happened during the Cenozoic Era?

Accepted Answer

A)   Modern humans appear
B)   Placental mammals appear
C)   Reptiles appear
D)   Oxygen accumulates in the atmosphere

Question 15

Major extinction events occur

Accepted Answer

A)   as a result of punctuated events.
B)   as a result of gradual events.

Question 16

Which supergroup consists of organisms with external structures that consist of calcium carbonate or silicon?

Accepted Answer

A)   Excavata
B)   Rhizaria
C)   Chromalveolata
D)   Opisthokonta

Question 17

Which of the following statements about vertebrates is False?

Accepted Answer

A)   Vertebrates have backbones.
B)   Vertebrates have complete body cavities.
C)   Vertebrates have complete organ systems.
D)   Vertebrates have the lowest extinction rates.

Question 18

Which statement best describes the number of evolutionary events?

Accepted Answer

A)   There have been 5 major extinction events and the 6th is in progress.
B)   There have been 3 major extinction events and the 4th is in progress.
C)   There have been 3 major extinction events and there will be no future events.
D)   There have been 5 major extinction events and there will be no future events.

Question 19

Which human impact has globally placed over 85% of species on the endangered species list?

Accepted Answer

A)   Habitat destruction
B)   Introduction of invasive species
C)   Pollution
D)   Overexploitation

Question 20

Sea stars are in the phylum Echinoderms. From the list provided, select the characteristics that are observed in this phylum.

Accepted Answer

A)   They prey on molluscs.
B)   Most have radial symmetry.
C)   They are pseudoceolomates.
D)   They have an incomplete nervous system.

Exam 9: Annelids, Nematoda, Echinoderms, Primates, Biodiversity, and Speciation

Over the past 30 years, the arthropod population had declined by approximately

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Which statement best describes the number of evolutionary events?

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Sexual reproduction in fungi is through a process called ______ that results the formation of a zygote.

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Which of the following species belongs in the jawless class of fish?

Correct AnswerverifiedShow Answer

New species form over time in response to

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Which supergroup consists of organisms with external structures that consist of calcium carbonate or silicon?

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Phylogenetic trees relate organisms

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Molluscs were the first organisms to have a(an) ______ body plan and well-developed organ systems.

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Which of the following statements about vertebrates is False?

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Major extinction events occur

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What are the characteristics of the rhizaria supergroup?

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Jellyfish were the first to evolve with True tissues. This led to a(an)

Correct AnswerverifiedShow Answer

Sea stars are in the phylum Echinoderms. From the list provided, select the characteristics that are observed in this phylum.

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Which of the following evolutionary events happened during the Cenozoic Era?

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Invertebrates are separated from vertebrates by not

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Which supergroup consists of dinoflagellates and parasitic sporozoans?

Correct AnswerverifiedShow Answer

What were the two key events needed for the first cells to evolve?

Correct AnswerverifiedShow Answer

Which human impact has globally placed over 85% of species on the endangered species list?

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Which of the following evolutionary events happened during the Mesozoic Era?

Correct AnswerverifiedShow Answer

Fragmented habitats are those that prevent movement of species and promote inbreeding and reduced reproduction.

Correct AnswerverifiedShow Answer

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