Question 1

Which one of the following terms applies to the phylum Arthropoda?

Accepted Answer

A)  radial symmetry
B)  diploblastic
C)  coelomate
D)  Parazoa

Question 2

Pseudocoelomate nematodes lack a body cavity.

Accepted Answer

A)  Correct, their pseudocoel does not allow for the development and expansion of organs.
B)  Incorrect, their body cavity is fully enclosed by ectoderm but is a functional body cavity.
C)  Correct, they are solid from the gut to the cuticle.
D)  Incorrect, although not fully enclosed by mesoderm the pseudocoel is a body cavity.

Question 3

Eumetazoa can be subdivided into two principal branches based on ____.

Accepted Answer

The answer of Eumetazoa can be subdivided into two principal...

Question 4

What are the three animal phyla that dominate animal life on land?

Accepted Answer

A)  Cnidaria, Mollusca, Platyhelminthes
B)  Porifera, Arthropoda, Nematoda
C)  Nematoda, Chordata, Cnidaria
D)  Mollusca, Arthropoda, Chordata

Question 5

Damage to its flagellum would prevent a choanocyte from

Accepted Answer

A)  circulating water through the sponge.
B)  stinging and capturing prey.
C)  secreting spongin to form the sponge body.
D)  producing the supportive spicules.

Question 6

Protostomes develop through

Accepted Answer

A)  spiral cleavage.
B)  radial cleavage.
C)  axial cleavage.
D)  polar cleavage.

Question 7

Select the following phylum that includes animals that are unsegmented, acoelomate, and have a digestive cavity with a single opening.

Accepted Answer

A)  Annelida
B)  Platyhelminthes
C)  Nematoda
D)  Cnidaria

Question 8

Linnaeus lumped all of the worm-like animals into the category Vermes (Vermis is Latin for worm) .Is this a valid classification scheme?

Accepted Answer

A)  No, because some worms are protists.
B)  Yes, because all worms are members of the same phylum.
C)  Yes, because all worm-like animals are more closely related to each other than they are to other animals.
D)  No, because the worm-like body plan has appeared many times through evolutionary history and is not a useful trait for classification.

Question 9

Given the distribution of the 30 or so animal phyla across the Earth's various ecosystems, what would be the most likely habitat for the origin of animals?

Accepted Answer

A)  Rain forests
B)  Freshwater habitats
C)  Deserts
D)  Oceans

Question 10

Molecular data confirm that cnidarians branched off from the rest of animals before ____________ evolved.

Accepted Answer

A)  echinoderms
B)  Porifera
C)  mollusks
D)  bilaterial symmetry

Question 11

A researcher is using molecular phylogenetic techniques to determine the evolutionary relationships of a large set of animal species.Which type of species are most likely to have been wrongly classified based on morphology alone?

Accepted Answer

A)  Parasitic species
B)  Aquatic species
C)  Bilateral species
D)  Terrestrial species

Question 12

Which one of the following applies to the phylum Ctenophora?

Accepted Answer

A)  often bioluminescent marine animals
B)  protostome
C)  coelomate
D)  deuterostome

Question 13

Select the following phylum that includes protostome animals that are segmented, bilaterally symmetric, and have a chitinous exoskeleton.

Accepted Answer

A)  Arthropoda
B)  Annelida
C)  Mollusca
D)  Brachiopoda

Exam 33: Animal Diversity and the Evolution of Body Plans

Which one of the following applies to the phylum Ctenophora?

Correct Answer
verified

Select the following phylum that includes protostome animals that are segmented, bilaterally symmetric, and have a chitinous exoskeleton.

Correct Answer
verified

Protostomes develop through

Correct Answer
verified

Pseudocoelomate nematodes lack a body cavity.

Correct Answer
verified

Damage to its flagellum would prevent a choanocyte from

Correct Answer
verified

Linnaeus lumped all of the worm-like animals into the category Vermes (Vermis is Latin for worm) .Is this a valid classification scheme?

Correct Answer
verified

Eumetazoa can be subdivided into two principal branches based on ____.

Correct Answer
verified

Select the following phylum that includes animals that are unsegmented, acoelomate, and have a digestive cavity with a single opening.

Correct Answer
verified

What are the three animal phyla that dominate animal life on land?

Correct Answer
verified

Molecular data confirm that cnidarians branched off from the rest of animals before ____________ evolved.

Correct Answer
verified

A researcher is using molecular phylogenetic techniques to determine the evolutionary relationships of a large set of animal species.Which type of species are most likely to have been wrongly classified based on morphology alone?

Correct Answer
verified

Given the distribution of the 30 or so animal phyla across the Earth's various ecosystems, what would be the most likely habitat for the origin of animals?

Correct Answer
verified

Which one of the following terms applies to the phylum Arthropoda?

Correct Answer
verified

Exam 33: Animal Diversity and the Evolution of Body Plans

Which one of the following applies to the phylum Ctenophora?

Correct AnswerverifiedShow Answer

Select the following phylum that includes protostome animals that are segmented, bilaterally symmetric, and have a chitinous exoskeleton.

Correct AnswerverifiedShow Answer

Protostomes develop through

Correct AnswerverifiedShow Answer

Pseudocoelomate nematodes lack a body cavity.

Correct AnswerverifiedShow Answer

Damage to its flagellum would prevent a choanocyte from

Correct AnswerverifiedShow Answer

Linnaeus lumped all of the worm-like animals into the category Vermes (Vermis is Latin for worm) .Is this a valid classification scheme?

Correct AnswerverifiedShow Answer

Eumetazoa can be subdivided into two principal branches based on ____.

Correct AnswerverifiedShow Answer

Select the following phylum that includes animals that are unsegmented, acoelomate, and have a digestive cavity with a single opening.

Correct AnswerverifiedShow Answer

What are the three animal phyla that dominate animal life on land?

Correct AnswerverifiedShow Answer

Molecular data confirm that cnidarians branched off from the rest of animals before ____________ evolved.

Correct AnswerverifiedShow Answer

A researcher is using molecular phylogenetic techniques to determine the evolutionary relationships of a large set of animal species.Which type of species are most likely to have been wrongly classified based on morphology alone?

Correct AnswerverifiedShow Answer

Given the distribution of the 30 or so animal phyla across the Earth's various ecosystems, what would be the most likely habitat for the origin of animals?

Correct AnswerverifiedShow Answer

Which one of the following terms applies to the phylum Arthropoda?

Correct AnswerverifiedShow Answer

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