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Multiple Choice Quiz
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1
Animals are multicellular _____.
A)prokaryotes
B)eukaryotes
C)both A and B
2
Which of the following does not describe animals?
A)multicellular
B)heterotrophic
C)oogamy
D)cell walls containing cellulose
3
An animal that has definite right and left halves has _____.
A)asymmetry
B)radial symmetry
C)bilateral symmetry
D)none of the above
4
The phylum _____ contains vertebrates and invertebrates.
A)Nematoda
B)Echinodermata
C)Chordata
D)Arthropoda
5
Animals without an endoskeleton of bone or cartilage are called invertebrates.
A)True
B)False
6
All animals are believed to have evolved from a _____ ancestor.
A)fungal
B)bacterial
C)protistan
7
Animals with radial symmetry tend to be sessile.
A)True
B)False
8
Which of the following germ layers are characteristic of animals with a tissue level of organization?
A)ectoderm
B)mesoderm
C)endoderm
D)A and C only
9
Segmented animals have repeating units and have more specialized parts than nonsegmented animals.
A)True
B)False
10
An animal that has an internal body cavity completely lined with mesoderm is called a(n) _____.
A)acoelomate
B)pseudocoelomate
C)coelomate
11
The _____ may have evolved separately from the rest of the animals.
A)Chordates
B)Mollusks
C)Platyhelminthes
D)Sponges
12
Which of the following is a germ layer that may be present during animal development?
A)ectoderm
B)endoderm
C)mesoderm
D)all of the above
13
All animals are highly organized with tissues, organs and organ systems.
A)True
B)False
14
Which of the following is characteristic of sponges?
A)bilateral symmetry
B)cellular level of organization
C)pseudocoelom
D)gastrovascular cavity
15
Digestion in a sponge occurs within _____.
A)cells
B)a gastrovascular cavity
C)a tube within a tube
D)none of the above
16
Sponges may reproduce asexually by _____.
A)budding
B)regeneration
C)producing eggs and sperm
D)both A and B
17
Some sponges have internal skeletons composed of spicules.
A)True
B)False
18
Sponges contain nerve cells.
A)True
B)False
19
Which of the following is a function of the amoeboid cells of a sponge?
A)production of the eggs and sperm
B)transport of nutrients from cell to cell
C)production of spicules
D)all of the above
20
Sponge larvae are mobile and may swim to a new location.
A)True
B)False
21
Sponges have no symmetry and no tissues.
A)True
B)False
22
Sponges are classified on the basis of their _____.
A)color
B)shape
C)skeleton type
D)size
23
A function of the collar cells is _____.
A)coordination of cellular activity
B)digestion of food particles obtained from the water
C)capture of prey
D)all of the above
24
Jellyfish and comb jellies are classified as the same phylum.
A)True
B)False
25
Which of the following phyla is characterized by animals that have radial symmetry?
A)Platyhelminthes
B)Cnidaria
C)Nematoda
D)Annelida
26
Cnidaria are tubular or bell-shaped animals that reside mainly in shallow coastal waters.
A)True
B)False
27
Organisms of the phylum Cnidaria display a _____ level of organization.
A)cellular
B)tissue
C)organ
D)organ system
28
The functions of the gastrovascular cavity are _____.
A)digestion and respiration
B)locomotion and excretion
C)digestion and transport
D)respiration and support
29
Which of the following germ layers is not present during cnidarian development?
A)ectoderm
B)mesoderm
C)endoderm
30
Cnidarians have unique stinging cells called _____ with which they can trap or paralyze their prey.
A)cnidocytes
B)spicules
C)collar cells
D)scolex
31
The life cycle of cnidarians is equally divided into polyp and medusa phases.
A)True
B)False
32
The mouth of a _____ is directed upwards.
A)polyp
B)medusa
33
Cnidaria have muscle and nerve fibers which enable them to have directional movement.
A)True
B)False
34
The bell shaped body form of a cnidarian is called a _____.
A)polyp
B)medusa
35
The outer and inner tissues of a cnidarian are separated by the _____.
A)gastrovascular cavity
B)nematocysts
C)mesoglea
D)scolex
36
Some anemones live attached to the shells of hermit crabs. The anemones provide protection and camouflage for the crab and the crab provides locomotion for the anemone. The anemones and crabs have a _____ relationship.
A)parasitic
B)commensalistic
C)mutualistic
37
The class _____ of cnidaria includes the true jellyfishes.
A)Anthozoa
B)Hydrozoa
C)Scyphozoa
D)none of the above
38
Although a Portuguese man-of-war looks like a misshapen medusa it is actually a colony of polyps and medusae.
A)True
B)False
39
The Great Barrier Reef along the eastern coast of Australia was formed by the accumulation of coral skeletal remains.
A)True
B)False
40
All of the following are classified in phylum Cnidaria except _____.
A)jellyfish
B)sea anemones
C)hydra
D)tapeworms
41
Cnidarians feed on prey that are captured when they trigger the release of _____.
A)nematocysts
B)spicules
C)digestive enzymes
D)endospores
42
Which of the following correctly describes hydra?
A)colonial
B)fresh-water dweller
C)immobile
D)medusa body form
43
The epidermis of the hydra contains _____.
A)epitheliomuscular cells
B)sensory cells
C)cnidocytes
D)all of the above
44
Hydra can reproduce asexually by budding.
A)True
B)False
45
Hydroid medusae tend to be larger than those of true jellyfishes.
A)True
B)False
46
The sexual reproduction of Obelia depends on the production of _____.
A)polyps
B)medusae
47
Flatworms and Cnidarians are both characterized by _____.
A)bilateral symmetry
B)three germ layers
C)gastrovascular cavities
D)an organ level of organization
48
The proboscis apparatus found in ribbon worms is used for _____ as well as for prey capture.
A)defense
B)locomotion
C)burrowing
D)all of the above
49
Which of the following is incorrectly matched?
A)sponges - no tissues
B)cnidaria - gastrovascular cavity
C)free-living flatworm - hooks and suckers
D)ribbon worm - tube within a tube
50
The excretory organ of a planarian _____.
A)functions in osmotic regulation
B)excretes water
C)is called a flame-cell system
D)all of the above
51
Free-living flatworms are characterized by _____.
A)eyespots
B)a pharynx
C)cilia
D)all of the above
52
Cephalization is displayed by _____ flatworms.
A)free-living
B)parasitic
53
Flatworms are _____.
A)acoelomates
B)pseudocoelomates
C)coelomates
54
Cephalization refers to the development of a head region with sensory structures.
A)True
B)False
55
All flatworms are parasitic.
A)True
B)False
56
Flatworms have _____.
A)specialized respiratory structures
B)a pseudocoelom
C)reproductive organs
D)none of the above
57
Which type of muscle layer is characteristic of free-living flatworms?
A)an outer circular layer
B)a diagonal layer
C)an inner longitudinal layer
D)all of the above
58
In larger free-living flatworms locomotion is achieved by movement of _____ on the ventral and lateral surfaces.
A)flagella
B)small limbs
C)fins
D)cilia
59
Flatworms have _____.
A)bilateral symmetry
B)a cellular level of organization
C)a complete digestive system
D)true coeloms
60
The embryonic _____ gives rise to the muscles and reproductive organs.
A)endoderm
B)ectoderm
C)mesoderm
61
Individual flatworms are able to produce both eggs and sperm.
A)True
B)False
62
Parasitic flatworms are characterized by _____.
A)hooks and suckers for attachment to the host
B)extensive development of the reproductive organs
C)a tegument to protect them from the hosts' digestive juices
D)all of the above
63
Trichinosis occurs when humans eat rare pork containing encysted larvae of the round worm Trichinella.
A)True
B)False
64
A coelom _____.
A)is a fully lined body cavity
B)can serve as a hydrostatic skeleton
C)provides a space for internal organs
D)all of the above
65
In which of the following are the animals coelomates?
A)flatworms
B)arthropods
C)roundworms
D)cnidarians
66
Roundworms and rotifers are _____.
A)acoelomates
B)pseudocoelomates
C)coelomates
67
Pseudocoelomates _____.
A)have a fully line body cavity
B)tend to be small in size
C)have complex and specialized internal organs
D)all of the above
68
Which is true of an animal with a true coelom?
A)its internal organs are held in place by mesenteries
B)there are more specialized organs not seen in pseudocoelomates
C)the gut is more muscular
D)all of the above
69
Animals in the phylum _____ have a tube within a tube body plan.
A)platyhelminthes
B)cnidaria
C)nematoda
D)porifera
70
Roundworms _____.
A)are segmented worms
B)are found only in fresh water
C)are all parasitic
D)none of the above
71
Rotifers are easily seen with the naked eye.
A)True
B)False
72
The roundworm Ascaris is hermaphroditic.
A)True
B)False
73
Roundworms are found in _____.
A)the sea
B)fresh water
C)soil
D)all of the above
74
Roundworms have _____ symmetry.
A)bilateral
B)radial
75
The limbs of a person with elephantiasis may swell to an enormous size because of a roundworm infection which blocks the lymphatic vessels.
A)True
B)False
76
Humans may get _____ by consuming undercooked pork.
A)tapeworms
B)trichinosis
C)both A and B
77
Roundworms have a(n) _____.
A)partially lined body cavity
B)complete digestive tract
C)organ level of organization
D)all of the above
78
Ascaris roundworms move by means of a whiplike motion because only longitudinal muscles lie next to the body wall.
A)True
B)False





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