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Post-Test
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1
Which one of the following statements about animals is incorrect? Animals typically
A)are capable of some type of movement or locomotion in order to acquire food.
B)eat multicellular prey.
C)lack cell walls.
D)comprise the fewest numbers of species of the eukaryotic kingdoms.
E)reproduce sexually.
2
True or False: All animal taxa are believed to have evolved from a single common ancestor.
A)True
B)False
3
Which of the following characteristics of animals was not traditionally used for classification?
A)Features of embryonic development
B)Body symmetry
C)Modification of Hox gene complex
D)Presence or absence of true body cavity
E)Presence or absence of specific tissue types
4
Which of the following is not associated with the embryonic development of bilaterally symmetrical animals?
A)Gastrulation
B)Endoderm
C)Archenteron
D)Germ layers
E)Mesoderm
5
Which of the following is not a specific form of cleavage found in zygotes of embryonic development?
A)Spiral cleavage
B)Radial cleavage
C)Determinate cleavage
D)Indeterminate cleavage
E)All of the choices are specific forms of cleavage found in zygotes.
6
Match the directionality found in animals on the left with the appropriate description on the right.
I: posteriora: upper
II: anteriorb: lower
III: dorsalc: head
IV: ventrald: tail
A)i = b; ii = a; iii = c; iv = d
B)i = d; ii = c; iii = a; iv = b
C)i = d; ii = b; iii = a; iv = c
D)i = c; ii = d; iii = b; iv = a
E)i = c; ii = d; iii = a; iv = b
7
Early cleavage of an animal zygote produces a hollow sphere of cells most accurately referred to as a
A)gastrula.
B)blastula.
C)ectoderm.
D)mesoderm.
E)coelom.
8
Animals that exhibit spiral cleavage are most accurately referred to as
A)acoelomates.
B)deuterostomes.
C)coelomates.
D)protostomes.
E)pseudocoelomates.
9
Which of the following animals would show segmentation as a trait?
A)Chordata
B)Arthropoda
C)Annelids
D)Echinoderms
E)Insects
10
Which one of the following animals would be most likely to exhibit radial cleavage?
A)Starfish
B)Chickens
C)Lobsters
D)Starfish and chickens
E)Starfish, chickens, and lobsters
11
True or False: The blastopore becomes the anus of a protostome.
A)True
B)False
12
Which of the following statements about Hox genes is incorrect?
A)The transition from one type of vertebra to another in a vertebrate is controlled by Hox genes.
B)Animals have multiple Hox genes.
C)The Hox C-6 gene in snakes is positioned such that snakes develop without a neck.
D)Relatively simple changes in Hox genes can lead to a wide variety of appendage types.
E)All of the statements about Hox genes are correct.
13
Which one of the following animal traits is believed to have emerged the most recently?
A)Bilateral symmetry
B)Endoskeleton
C)Coelom
D)Tissues
E)Body cavity
14
According to molecular sequence data, nematode worms are most closely related to
A)earthworms.
B)chimpanzees.
C)fruit flies.
D)jellyfish.
E)snails.
15
True or False: Following the evolutionary split between radiata and bilateria, more phyla became bilateria.
A)True
B)False
16
Which one of the following is a clade classification within the deuterostomes?
A)Ctenophora
B)Echinodermata
C)Lophotrochozoa
D)Ecdysis
E)Mollusca
17
The physical basis of classification as a Lophotrochozoa is
A)horseshoe shaped crown of tentacles used for seeding.
B)the presence of segmentation.
C)a band of cilia during embryonic development.
D)the presence of segmentation and a band of cilia during embryonic development.
E)horsehoe shaped crown of tentacles used for seeding and a band of cilia during embryonic development.
18
Which of the following phyla have bilateral larvae and radial adults?
A)Annelida
B)Chordata
C)Rotifera
D)Echinodermata
E)Cnidaria
19
Which one of the following is not a characteristic of the Rotifera?
A)Bilateral symmetry
B)Acoelomate
C)Lack of segmentation
D)Excretory gland cells
E)Hydrostatic skeleton
20
True or False: Traditional as well as molecular classification methods suggest that the Platyhelminthes are primitive acoelomate animals.
A)True
B)False





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