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| 1 | |
When the blastopore is associated with the mouth the animal is a _____. |
| | A) | protostome |
| | B) | deuterostome |
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| 2 | |
Protostomes have _____. |
| | A) | a tissue level of organization |
| | B) | a true coelom |
| | C) | radial symmetry |
| | D) | none of the above |
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| 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 |
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| 4 | |
Coelomic fluid aids _____. |
| | A) | respiration |
| | B) | circulation |
| | C) | excretion |
| | D) | all of the above |
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| 5 | |
In deuterostomes _____ cleavage occurs. |
| | A) | spiral |
| | B) | radial |
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| 6 | |
The site of invagination of endoderm during development is called the _____. |
| | A) | pseudocoelom |
| | B) | blastopore |
| | C) | hemocoel |
| | D) | scolex |
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| 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 |
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| 8 | |
In which of the following phyla are deuterostomes classified? |
| | A) | mollusca |
| | B) | arthropoda |
| | C) | echinodermata |
| | D) | nematoda |
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| 9 | |
In _____ each new cell that forms during cleavage could go on to become organism. |
| | A) | protostomes |
| | B) | deuterostomes |
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| 10 | |
The _____ undergo spiral cleavage during development. |
| | A) | chordates |
| | B) | annelids |
| | C) | echinoderms |
| | D) | all of the above |
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| 11 | |
A(n) _____ arises from the fusion of a pair of mesodermal pouches. |
| | A) | enterocoelom |
| | B) | pseudocoelom |
| | C) | schizocoelom |
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| 12 | |
The _____ are protostomes. |
| | A) | annelids |
| | B) | molluscs |
| | C) | arthropods |
| | D) | all of the above |
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| 13 | |
There are twice as many molluscs as there are vertebrates. |
| | A) | True |
| | B) | False |
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| 14 | |
Mollusks are __________. |
| | A) | marine |
| | B) | freshwater |
| | C) | terrestrial |
| | D) | all of the above |
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| 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 |
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| 16 | |
A hemocoel is characteristic of a(n) _____ circulatory system. |
| | A) | open |
| | B) | closed |
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| 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 |
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| 18 | |
Clams, oysters, mussels, and scallops are all bivalves. |
| | A) | True |
| | B) | False |
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| 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 |
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| 20 | |
The shell of a mollusc is secreted by the _____. |
| | A) | visceral mass |
| | B) | mantle |
| | C) | foot |
| | D) | hemocoel |
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| 21 | |
The molluscs muscular foot can be adapted for _____. |
| | A) | attachment |
| | B) | food capture |
| | C) | locomotion |
| | D) | all of the above |
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| 22 | |
All molluscs display extensive cephalization. |
| | A) | True |
| | B) | False |
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| 23 | |
Molluscs have _____. |
| | A) | radial symmetry |
| | B) | no body cavity |
| | C) | a complete digestive system |
| | D) | a tissue level of organization |
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| 24 | |
The only remains of the coelom in the bivalves is the _____. |
| | A) | mantle |
| | B) | incurrent siphon |
| | C) | pericardial cavity |
| | D) | anterior adductor muscle |
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| 25 | |
The watery habitat of the clam enables it to excrete the easily made _____. |
| | A) | ammonia |
| | B) | uric acid |
| | C) | urea |
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| 26 | |
Oxygenated blood in the molluscs is blue since hemocyanin is the respiratory pigment. |
| | A) | True |
| | B) | False |
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| 27 | |
Water exits the mantle cavity of the clam by way of the _____ siphon. |
| | A) | incurrent |
| | B) | excurrent |
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| 28 | |
Clams are hermaphroditic. |
| | A) | True |
| | B) | False |
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| 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 |
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| 30 | |
An example of a cephalopod is a _____. |
| | A) | snail |
| | B) | scallop |
| | C) | sea slug |
| | D) | squid |
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| 31 | |
The _____ are the molluscs that have an elongated flat foot. |
| | A) | gastropods |
| | B) | bivalves |
| | C) | crustaceans |
| | D) | cephalopods |
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| 32 | |
The _____ functions as a respiratory structure in gastropods which are adapted to land. |
| | A) | foot |
| | B) | mantle |
| | C) | gill |
| | D) | visceral mass |
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| 33 | |
Gastropods are all aquatic organisms. |
| | A) | True |
| | B) | False |
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| 34 | |
Terrestrial gastropod development does not include the swimming larval stage characteristic of aquatic species. |
| | A) | True |
| | B) | False |
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| 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 |
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| 36 | |
Molluscs display segmentation. |
| | A) | True |
| | B) | False |
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| 37 | |
Animals classified as annelids _____. |
| | A) | have bilateral symmetry |
| | B) | are segmented |
| | C) | have a specialized digestive tract |
| | D) | all of the above |
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| 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 |
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| 39 | |
Earthworms have cephalization. |
| | A) | True |
| | B) | False |
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| 40 | |
The development of ____ includes a swimming larval stage. |
| | A) | polychaetes |
| | B) | oligochaetes |
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| 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 |
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| 42 | |
Polychaetes always have sex organs. |
| | A) | True |
| | B) | False |
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| 43 | |
Locomotion in earthworms utilizes _____. |
| | A) | muscle contraction |
| | B) | the setae |
| | C) | both A and B |
| | D) | neither A or B |
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| 44 | |
Clam worms depend on their parapodia for _____. |
| | A) | swimming |
| | B) | gas exchange |
| | C) | reproduction |
| | D) | both A and B |
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| 45 | |
Internal partitions called septa illustrate the presence of _____ in annelids. |
| | A) | cephalization |
| | B) | segmentation |
| | C) | a respiratory system |
| | D) | all of the above |
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| 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 |
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| 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 |
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| 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 |
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| 49 | |
Leeches produce a powerful anticoagulant in their saliva. |
| | A) | True |
| | B) | False |
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| 50 | |
The presence of two suckers illustrates the _____ lifestyle of most leeches. |
| | A) | free-living |
| | B) | parasitic |
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| 51 | |
The crop and the gizzard are specialized organs of the earthworm's _____ system. |
| | A) | reproductive |
| | B) | circulatory |
| | C) | digestive |
| | D) | nervous |
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| 52 | |
The absence of parapodia on the earthworm reduce water loss and facilitate its burrowing in soil. |
| | A) | True |
| | B) | False |
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| 53 | |
The most successful of all animals are considered to be the _____. |
| | A) | arthropods |
| | B) | annelids |
| | C) | cephalopods |
| | D) | none of the above |
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| 54 | |
The success of arthropods is attributed to their _____. |
| | A) | radial symmetry |
| | B) | hydrostatic skeleton |
| | C) | well-developed nervous system |
| | D) | lack of segmentation |
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| 55 | |
Chitin is a strong, flexible, nitrogenous polysaccharide. |
| | A) | True |
| | B) | False |
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| 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 |
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| 57 | |
Arthropods are characterized by _____. |
| | A) | jointed appendages |
| | B) | a muscular foot |
| | C) | cnidocytes which capture prey |
| | D) | all of the above |
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| 58 | |
The appendages of arthropods are modified for _____. |
| | A) | walking |
| | B) | reproducing |
| | C) | sensory reception |
| | D) | all of the above |
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| 59 | |
The respiratory structures of arthropods are _____. |
| | A) | gills |
| | B) | book lungs |
| | C) | tracheae |
| | D) | any of these possible |
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| 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 |
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| 61 | |
Arthropods have _____ eyes. |
| | A) | simple |
| | B) | compound |
| | C) | both A and B |
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| 62 | |
Arthropods have _____ symmetry. |
| | A) | no |
| | B) | radial |
| | C) | bilateral |
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| 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 |
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| 64 | |
Which of the following are filter feeders? |
| | A) | barnacles |
| | B) | clams |
| | C) | tubeworms |
| | D) | all of the above |
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| 65 | |
The subphylum Crustacea includes _____. |
| | A) | crayfish |
| | B) | krill |
| | C) | crabs |
| | D) | all of the above |
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| 66 | |
Crayfish display sexual dimorphism. |
| | A) | True |
| | B) | False |
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| 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 |
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| 68 | |
Crustaceans are mostly marine animals. |
| | A) | True |
| | B) | False |
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| 69 | |
Uniramia include _____. |
| | A) | millipedes |
| | B) | centipedes |
| | C) | insects |
| | D) | all of the above |
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| 70 | |
The oldest terrestrial arthropods are the _____. |
| | A) | spiders |
| | B) | scorpions |
| | C) | ticks |
| | D) | none of the above |
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| 71 | |
Insects are able to conserve water because they produce the solid, nitrogenous waste _____. |
| | A) | uric acid |
| | B) | urea |
| | C) | ammonia |
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| 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 |
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| 73 | |
In an insect nitrogenous waste is excreted into the _____. |
| | A) | tracheae |
| | B) | digestive tract |
| | C) | tympanum |
| | D) | ovipositor |
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| 74 | |
More known species are classified as insects than all other animal species combined. |
| | A) | True |
| | B) | False |
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| 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 |
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| 76 | |
The insects' circulatory system is used to transport oxygen to all the cells of the body. |
| | A) | True |
| | B) | False |
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| 77 | |
Spiders' _____ perform gas exchange for them. |
| | A) | gills |
| | B) | gastric mill |
| | C) | crop |
| | D) | book lungs |
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| 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 |
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| 79 | |
Breathing by tracheae limits the size of insects. |
| | A) | True |
| | B) | False |
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