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1 | | Which of the following statements about hair is
true? |
| | A) | It is homologous to feathers. |
| | B) | It is a dermal structure. |
| | C) | It is found in all mammals. |
| | D) | It is possessed by all endotherms. |
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2 | | The mammalian skull may be characterized as |
| | A) | anapsid. |
| | B) | diapsid. |
| | C) | biaspid. |
| | D) | synapsid. |
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3 | | They evolved from a group of carnivorous
pelycosaurs. |
| | A) | therapsids |
| | B) | labyrinthodonts |
| | C) | anurans |
| | D) | theropods |
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4 | | The earliest therians (mammals) evolved in the |
| | A) | Permian. |
| | B) | Triassic. |
| | C) | Cretaceous. |
| | D) | Cenozoic. |
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5 | | The early therians most resembled a small |
| | A) | pig. |
| | B) | rat. |
| | C) | kangaroo. |
| | D) | horse. |
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6 | | Unlike reptiles, the first mammals were characterized
by |
| | A) | continuously replaced teeth. |
| | B) | only one set of teeth during the lifetime. |
| | C) | two sets of teeth during the lifetime. |
| | D) | continuously growing teeth. |
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7 | | The implied presence of sebaceous and sweat glands in early
mammals signified what? |
| | A) | hair |
| | B) | fossilized casts |
| | C) | an epidermis |
| | D) | a dermis |
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8 | | The adaptive radiation of the mammals occurred during
the |
| | A) | Triassic |
| | B) | Jurassic. |
| | C) | Cenozoic. |
| | D) | Cretaceous. |
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9 | | What is one probable reason for that adaptive
radiation? |
| | A) | demise of dinosaurs and many other reptiles |
| | B) | presence of hair |
| | C) | novelty of the four-chambered heart |
| | D) | novelty of endothermy |
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10 | | Mammals are characterized by the presence of occipital
condyles. |
| | A) | one |
| | B) | two |
| | C) | three |
| | D) | four |
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11 | | Between the thoracic and abdominal cavities in mammals is
the |
| | A) | liver. |
| | B) | mediastinum. |
| | C) | diaphragm |
| | D) | omasum. |
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12 | | Like reptiles and birds, mammals have kidneys. |
| | A) | mesonephric |
| | B) | aglomerular |
| | C) | metanephric |
| | D) | unpaired |
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13 | | Hair, horns, and nails are composed of |
| | A) | carotenes. |
| | B) | keratin. |
| | C) | cerumen. |
| | D) | colostrum. |
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14 | | The function of vibrissae is for |
| | A) | coloration. |
| | B) | insulation. |
| | C) | protection against wear. |
| | D) | sensation. |
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15 | | Rhinoceros horn is considered by some cultures to be an
aphrodisiac. Given what you know about the composition of its horn, consuming this horn might be
compared to |
| | A) | biting your fingernails. |
| | B) | picking one's nose. |
| | C) | eating an egg. |
| | D) | eating the exoskeleton of a lobster. |
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16 | | In most mammals, eccrine sweat glands occur typically
on |
| | A) | all areas of the body. |
| | B) | the head only. |
| | C) | areas of the body with much hair. |
| | D) | hairless areas of the body. |
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17 | | In humans, one might expect to find apocrine glands |
| | A) | in the armpits. |
| | B) | on the face. |
| | C) | on the palms and the bottom of the foot |
| | D) | all over the body. |
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18 | | In humans, sebaceous glands are most numerous on the scalp
and the |
| | A) | palms. |
| | B) | back. |
| | C) | face. |
| | D) | armpits. |
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19 | | Mammals have teeth that are differentiated into a variety of
tooth types. This condition is known as |
| | A) | diphyodont. |
| | B) | heterodont. |
| | C) | monodont. |
| | D) | homodont. |
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20 | | Many grazing mammals lack canines and/or upper incisors.
This space is called a |
| | A) | fistula. |
| | B) | diastema. |
| | C) | canula. |
| | D) | carnassial space. |
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21 | | Members of order have ever-growing incisors and cheek
teeth. |
| | A) | Pinnipedia |
| | B) | Cetacea |
| | C) | Insectivora |
| | D) | Rodentia |
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22 | | An example of an insectivore is a |
| | A) | bat. |
| | B) | cat. |
| | C) | ruminant. |
| | D) | dolphin. |
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23 | | Which of the following is not a ruminant? |
| | A) | horse |
| | B) | cow |
| | C) | bison |
| | D) | goat |
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24 | | Most female mammals are sexually receptive only
during |
| | A) | diapause. |
| | B) | estrus. |
| | C) | gestation. |
| | D) | parturition. |
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25 | | Unlike birds and reptiles, mammals possess three bones
(ossicles) in the middle ear. |
| | A) | True |
| | B) | False |
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26 | | Mammals are characterized by having diphycercal
teeth. |
| | A) | True |
| | B) | False |
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27 | | Mammalian red blood cells may be characterized as nucleated biconcave corpuscles. |
| | A) | True |
| | B) | False |
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28 | | The structure in mammals for production of sound is the
larynx. |
| | A) | True |
| | B) | False |
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29 | | True horns, which are found in ruminants, are composed of
keratin surrounding a bony core, and are shed annually. |
| | A) | True |
| | B) | False |
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30 | | The two kinds of sweat glands found in mammals are apocrine
glands and eccrine glands. |
| | A) | True |
| | B) | False |
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31 | | Sebaceous glands function primarily in temperature
regulation. |
| | A) | True |
| | B) | False |
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32 | | An animal that eats just about anything (like most humans) is
known as an omnivore. |
| | A) | True |
| | B) | False |
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33 | | The milk or deciduous teeth are replaced by permanent
teeth. |
| | A) | True |
| | B) | False |
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34 | | Large canines, and ever-growing teeth characterize
carnivores. |
| | A) | True |
| | B) | False |
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35 | | Ruminants have a four-chambered intestine to aid in digestion
of cellulose. |
| | A) | True |
| | B) | False |
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36 | | The correct order of the four chambers of a ruminant is
rumen, reticulum, abomasum, and omasum. |
| | A) | True |
| | B) | False |
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37 | | Some herbivores like rabbits eat their feces to aid in
complete digestion. |
| | A) | True |
| | B) | False |
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38 | | Herbivores tend to be more active and intelligent than
carnivores. |
| | A) | True |
| | B) | False |
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39 | | Small animals tend to have a relatively greater metabolic
rate, based on their body weight, than a larger mammal. |
| | A) | True |
| | B) | False |
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40 | | Members of order primates include humans, as well as monkeys
and apes. This order is derived from tree-dwelling insectivores, so you are more closely related to a
shrew than a cat! |
| | A) | True |
| | B) | False |
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41 | | The predecessor of Homo sapiens was Homo
erectus. Our species appeared about 30,000 years ago. |
| | A) | True |
| | B) | False |
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42 | | Members of infraclass Ornithodelphia include the duck-billed
platypus, spiny anteater, and kangaroos. |
| | A) | True |
| | B) | False |
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43 | | The lagomorphs may be distinguished from the rodents, as
lagomorphs have a second set of small incisors behind the first, although members of both groups do have
ever-growing incisors. |
| | A) | True |
| | B) | False |
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44 | | Marine-dwelling mammals include members of orders carnivora,
pinnipedia, sirenia, and cetacea. |
| | A) | True |
| | B) | False |
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45 | | The prime distinguishing characteristic of the artiodactyls
and perissodactyls is the number of toes; artiodactyls have an even number of toes, and perissodactyls
have an odd number of toes. Of the two, the artiodactyls are more speciose. |
| | A) | True |
| | B) | False |
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