BIO 200 Final Exam with precise detailed answers
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Which of the following terms or structures is properly associated only with animals?
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a. tissues
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b. clustered Hox genes
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c. autotrophy
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d. sexual reproduction
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e. cell wall - correct answer✔✔b. clustered Hox genes
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Cephalization is primarily associated with... ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. adaptation to dark environments
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b. method of reproduction
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c. fate of blastopore
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d. type of digestive system
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e. bilateral symmetry - correct answer✔✔e. bilateral symmetry
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You are trying to identify an organism. It is an animal, but it does not have nerve or muscle
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tissue. It is neither diploblastic nor triploblastic. It is probably a...
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a. round worm
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b. sponge
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c. hagfish
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d. sea jelly
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,e. mollusc - correct answer✔✔b. sponge
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There is evidence that arthropods invaded land about 150 million years earlier than
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vertebrates. Based on new arthropod phylogenic trees, this difference most clearly implies ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
that...
a. arthropods evolved before vertebrates did
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b. living terrestrial arthropods are better adapted to terrestrial life than are living terrestrial
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vertebrates
c. arthropods have had more time to co-evolve with land plants than have vertebrates
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d. vertebrates evolved from arthropods
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e. ancestral arthropods must have been poorly adapted to aquatic life, thus experienced a
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selective pressure to invade the land - correct answer✔✔c. arthropods have had more time
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to co-evolve with land plants than have vertebrates
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In a collection of slides, photos, and documents, you find evidence of an adult animal with
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bilateral symmetry and documentation that this animal's gastrula has a mesoderm germ
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layer. This animal could be categorized as...
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a. a deuterostome
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b. triploblastic
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c. a eucoelomate
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d. the product of metamorphosis
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e. highly cephalized - correct answer✔✔b. triploblastic
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Among invertebrates, arthropods are unique in possessing members that have...
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a. segmented bodies
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, b. a ventral nerve cord
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c. wings
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d. open circulation
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e. a cuticle - correct answer✔✔c. wings
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Evidence of which structure or characteristic would be most surprising to find among the
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fossils of the pre-Cambrian fauna?
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a. true tissues
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b. hard parts
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c. bilateral symmetry
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d. cephalization
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e. embryos - correct answer✔✔b. hard parts
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The most ancient branch point in animal phylogeny is between having...
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a. true tissues or no tissues
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b. a well-define head or no head
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c. radial or bilateral symmetry
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d. diploblastic or triploblastic embryos
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e. a body cavity or no body cavity - correct answer✔✔a. true tissues or no tissues
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What was the adaptive trait of Gnathostomes that allowed for mobile predation?
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a. breathe through their skin
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b. four well-developed limbs
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Which of the following terms or structures is properly associated only with animals?
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a. tissues
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b. clustered Hox genes
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c. autotrophy
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d. sexual reproduction
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e. cell wall - correct answer✔✔b. clustered Hox genes
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Cephalization is primarily associated with... ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. adaptation to dark environments
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b. method of reproduction
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c. fate of blastopore
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d. type of digestive system
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e. bilateral symmetry - correct answer✔✔e. bilateral symmetry
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You are trying to identify an organism. It is an animal, but it does not have nerve or muscle
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tissue. It is neither diploblastic nor triploblastic. It is probably a...
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a. round worm
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b. sponge
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c. hagfish
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d. sea jelly
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,e. mollusc - correct answer✔✔b. sponge
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There is evidence that arthropods invaded land about 150 million years earlier than
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
vertebrates. Based on new arthropod phylogenic trees, this difference most clearly implies ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
that...
a. arthropods evolved before vertebrates did
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b. living terrestrial arthropods are better adapted to terrestrial life than are living terrestrial
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
vertebrates
c. arthropods have had more time to co-evolve with land plants than have vertebrates
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d. vertebrates evolved from arthropods
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e. ancestral arthropods must have been poorly adapted to aquatic life, thus experienced a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
selective pressure to invade the land - correct answer✔✔c. arthropods have had more time
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to co-evolve with land plants than have vertebrates
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
In a collection of slides, photos, and documents, you find evidence of an adult animal with
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
bilateral symmetry and documentation that this animal's gastrula has a mesoderm germ
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
layer. This animal could be categorized as...
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a. a deuterostome
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b. triploblastic
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c. a eucoelomate
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d. the product of metamorphosis
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e. highly cephalized - correct answer✔✔b. triploblastic
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Among invertebrates, arthropods are unique in possessing members that have...
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. segmented bodies
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, b. a ventral nerve cord
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c. wings
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d. open circulation
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e. a cuticle - correct answer✔✔c. wings
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Evidence of which structure or characteristic would be most surprising to find among the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
fossils of the pre-Cambrian fauna?
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a. true tissues
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b. hard parts
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c. bilateral symmetry
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d. cephalization
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e. embryos - correct answer✔✔b. hard parts
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The most ancient branch point in animal phylogeny is between having...
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a. true tissues or no tissues
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b. a well-define head or no head
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c. radial or bilateral symmetry
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d. diploblastic or triploblastic embryos
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e. a body cavity or no body cavity - correct answer✔✔a. true tissues or no tissues
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What was the adaptive trait of Gnathostomes that allowed for mobile predation?
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a. breathe through their skin
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b. four well-developed limbs
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