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Multiple Choice Quiz
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1
When the blastopore is associated with the mouth the animal is a _____.
A)protostome
B)deuterostome
2
Protostomes have _____.
A)a tissue level of organization
B)a true coelom
C)radial symmetry
D)none of the above
3
An advantage to having a coelom is _____.
A)eggs and sperm can be stored in the body cavity
B)internal organs can be more complex
C)coelomic fluid serves as a hydrostatic skeleton
D)all of the above
4
Coelomic fluid aids _____.
A)respiration
B)circulation
C)excretion
D)all of the above
5
In deuterostomes _____ cleavage occurs.
A)spiral
B)radial
6
The site of invagination of endoderm during development is called the _____.
A)pseudocoelom
B)blastopore
C)hemocoel
D)scolex
7
The anus appears at or near the blastopore and then later a new opening forms the mouth during the development of a _____.
A)deuterostome
B)acoelomate
C)pseudocoelomate
D)protostome
8
In which of the following phyla are deuterostomes classified?
A)mollusca
B)arthropoda
C)echinodermata
D)nematoda
9
In _____ each new cell that forms during cleavage could go on to become organism.
A)protostomes
B)deuterostomes
10
The _____ undergo spiral cleavage during development.
A)chordates
B)annelids
C)echinoderms
D)all of the above
11
A(n) _____ arises from the fusion of a pair of mesodermal pouches.
A)enterocoelom
B)pseudocoelom
C)schizocoelom
12
The _____ are protostomes.
A)annelids
B)molluscs
C)arthropods
D)all of the above
13
There are twice as many molluscs as there are vertebrates.
A)True
B)False
14
Mollusks are __________.
A)marine
B)freshwater
C)terrestrial
D)all of the above
15
Molluscs have a three-part body plan composed of _____.
A)visceral mass, foot, and mantle
B)jointed appendages, exoskeleton and thorax
C)proglottids, scolex, and tegument
D)gastrovascular cavity, mesoglea, and cnidocytes
16
A hemocoel is characteristic of a(n) _____ circulatory system.
A)open
B)closed
17
Paired kidneys, a specialized digestive tract, and reproductive organs are located in the _____ of molluscs.
A)foot
B)mantle
C)visceral mass
D)none of the above
18
Clams, oysters, mussels, and scallops are all bivalves.
A)True
B)False
19
Some molluscs have an organ called a(n) _____ that has many rows of teeth and is used to obtain food.
A)pharynx
B)scolex
C)radula
D)osculum
20
The shell of a mollusc is secreted by the _____.
A)visceral mass
B)mantle
C)foot
D)hemocoel
21
The molluscs muscular foot can be adapted for _____.
A)attachment
B)food capture
C)locomotion
D)all of the above
22
All molluscs display extensive cephalization.
A)True
B)False
23
Molluscs have _____.
A)radial symmetry
B)no body cavity
C)a complete digestive system
D)a tissue level of organization
24
The only remains of the coelom in the bivalves is the _____.
A)mantle
B)incurrent siphon
C)pericardial cavity
D)anterior adductor muscle
25
The watery habitat of the clam enables it to excrete the easily made _____.
A)ammonia
B)uric acid
C)urea
26
Oxygenated blood in the molluscs is blue since hemocyanin is the respiratory pigment.
A)True
B)False
27
Water exits the mantle cavity of the clam by way of the _____ siphon.
A)incurrent
B)excurrent
28
Clams are hermaphroditic.
A)True
B)False
29
The active lifestyle of the cephalopods is supported by _____.
A)a closed circulatory system
B)well-developed sense organs
C)both A and B
30
An example of a cephalopod is a _____.
A)snail
B)scallop
C)sea slug
D)squid
31
The _____ are the molluscs that have an elongated flat foot.
A)gastropods
B)bivalves
C)crustaceans
D)cephalopods
32
The _____ functions as a respiratory structure in gastropods which are adapted to land.
A)foot
B)mantle
C)gill
D)visceral mass
33
Gastropods are all aquatic organisms.
A)True
B)False
34
Terrestrial gastropod development does not include the swimming larval stage characteristic of aquatic species.
A)True
B)False
35
Cephalization is present in gastropods as evidenced by their _____.
A)well developed head region
B)tentacles and eyes
C)cerebral ganglion
D)all of the above
36
Molluscs display segmentation.
A)True
B)False
37
Animals classified as annelids _____.
A)have bilateral symmetry
B)are segmented
C)have a specialized digestive tract
D)all of the above
38
The excretory system of the annelids consists of _____.
A)paired nephridia in each segment
B)the flame cell system
C)a collection of malpighian tubules
D)paired kidneys
39
Earthworms have cephalization.
A)True
B)False
40
The development of ____ includes a swimming larval stage.
A)polychaetes
B)oligochaetes
41
The production of the same type of larve by some annelids and mulluscs indicates a possible evolutionary relationship between the two groups.
A)True
B)False
42
Polychaetes always have sex organs.
A)True
B)False
43
Locomotion in earthworms utilizes _____.
A)muscle contraction
B)the setae
C)both A and B
D)neither A or B
44
Clam worms depend on their parapodia for _____.
A)swimming
B)gas exchange
C)reproduction
D)both A and B
45
Internal partitions called septa illustrate the presence of _____ in annelids.
A)cephalization
B)segmentation
C)a respiratory system
D)all of the above
46
Red blood flows through the dorsal blood vessel, five pairs of hearts and a ventral blood vessel in the _____ circulatory system of the earthworm.
A)closed
B)open
47
Mucus which prevents the sperm from drying out as it is passed between earthworms is secreted by the _____.
A)crop
B)nephridium
C)clitellum
D)setae
48
Earthworms are adapted to terrestrial habitats as evidenced by _____.
A)the presence of parapodia
B)the production of swimming larva
C)a pair of strong chitinous jaws
D)none of the above
49
Leeches produce a powerful anticoagulant in their saliva.
A)True
B)False
50
The presence of two suckers illustrates the _____ lifestyle of most leeches.
A)free-living
B)parasitic
51
The crop and the gizzard are specialized organs of the earthworm's _____ system.
A)reproductive
B)circulatory
C)digestive
D)nervous
52
The absence of parapodia on the earthworm reduce water loss and facilitate its burrowing in soil.
A)True
B)False
53
The most successful of all animals are considered to be the _____.
A)arthropods
B)annelids
C)cephalopods
D)none of the above
54
The success of arthropods is attributed to their _____.
A)radial symmetry
B)hydrostatic skeleton
C)well-developed nervous system
D)lack of segmentation
55
Chitin is a strong, flexible, nitrogenous polysaccharide.
A)True
B)False
56
A disadvantage to an exoskeleton is _____.
A)it prevents dessication
B)it is protective
C)muscles can attach to it
D)molting must occur as the animal enlarges
57
Arthropods are characterized by _____.
A)jointed appendages
B)a muscular foot
C)cnidocytes which capture prey
D)all of the above
58
The appendages of arthropods are modified for _____.
A)walking
B)reproducing
C)sensory reception
D)all of the above
59
The respiratory structures of arthropods are _____.
A)gills
B)book lungs
C)tracheae
D)any of these possible
60
Arthropod larva eats different food and lives in a different environment than the adult which reduces competition between members of the species.
A)True
B)False
61
Arthropods have _____ eyes.
A)simple
B)compound
C)both A and B
62
Arthropods have _____ symmetry.
A)no
B)radial
C)bilateral
63
The drastic change in form and physiology that occurs as a larva becomes an adult is known as _____.
A)phagocytosis
B)metamorphosis
C)molting
D)budding
64
Which of the following are filter feeders?
A)barnacles
B)clams
C)tubeworms
D)all of the above
65
The subphylum Crustacea includes _____.
A)crayfish
B)krill
C)crabs
D)all of the above
66
Crayfish display sexual dimorphism.
A)True
B)False
67
The _____ in a crayfish has chitinous teeth with which it grinds up coarse food.
A)green gland
B)digestive gland
C)telson
D)gastric mill
68
Crustaceans are mostly marine animals.
A)True
B)False
69
Uniramia include _____.
A)millipedes
B)centipedes
C)insects
D)all of the above
70
The oldest terrestrial arthropods are the _____.
A)spiders
B)scorpions
C)ticks
D)none of the above
71
Insects are able to conserve water because they produce the solid, nitrogenous waste _____.
A)uric acid
B)urea
C)ammonia
72
Which of the following organs are part of an insect's digestive system?
A)crop
B)gastric ceca
C)gizzard
D)all of the above
73
In an insect nitrogenous waste is excreted into the _____.
A)tracheae
B)digestive tract
C)tympanum
D)ovipositor
74
More known species are classified as insects than all other animal species combined.
A)True
B)False
75
A great deal of the success of insects is due to their wings which enable them to _____.
A)find food
B)disperse themselves
C)escape predation
D)all of the above
76
The insects' circulatory system is used to transport oxygen to all the cells of the body.
A)True
B)False
77
Spiders' _____ perform gas exchange for them.
A)gills
B)gastric mill
C)crop
D)book lungs
78
Crayfish are adapted to an aquatic lifestyle as evidenced by their _____.
A)excretion of the solid waste uric acid
B)deposition of fertilized eggs in the sand
C)gills that take up oxygen from water
D)tympanum for the reception of sound waves
79
Breathing by tracheae limits the size of insects.
A)True
B)False







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