Question 1

Which of the following is NOT a mammalian characteristic?

Accepted Answer

A) heterodont dentition 
B) diaphragm 
C) three middle-ear ossicles 
D) mucous glands in the skin 
E) four-chambered heart 
A) heterodont dentition 
B) diaphragm 
C) three middle-ear ossicles 
D) mucous glands in the skin 
E) four-chambered heart

Question 2

The order of mammals with the largest number of species is the order

Accepted Answer

A) Artiodactyla 
B) Lagomorpha 
C) Xenarthra 
D) Chiroptera 
E) Rodentia 
A) Artiodactyla 
B) Lagomorpha 
C) Xenarthra 
D) Chiroptera 
E) Rodentia

Question 3

The synapsid lineage was the first amniote lineage to diversify,starting about __________ years ago.

Accepted Answer

A) 30,000 
B) 475,000 
C) 6.8 million 
D) 320 million 
E) 4.2 billion 
A) 30,000 
B) 475,000 
C) 6.8 million 
D) 320 million 
E) 4.2 billion

Question 4

The duck-billed platypus is referred to as a(n)

Accepted Answer

A) monotreme. 
B) placental. 
C) marsupial. 
D) pterodont. 
E) cynodont. 
A) monotreme. 
B) placental. 
C) marsupial. 
D) pterodont. 
E) cynodont.

Question 5

Many humans carry a small percentage of DNA from Homo neanderthalensis.Why?

Accepted Answer

A) Interbreeding between Homo sapiens and Homo neanderthalensis likely occurred due to overlapping territories. 
B) Homo sapiens descend directly from Homo neanderthalensis. 
C) Homo sapiens and Homo neanderthalensis are the same species. 
D) Homo neanderthalensis descend directly from Homo sapiens. 
A) Interbreeding between Homo sapiens and Homo neanderthalensis likely occurred due to overlapping territories. 
B) Homo sapiens descend directly from Homo neanderthalensis. 
C) Homo sapiens and Homo neanderthalensis are the same species. 
D) Homo neanderthalensis descend directly from Homo sapiens.

Question 6

The major excretory product of most mammals is

Accepted Answer

A) ammonia. 
B) uric acid. 
C) guanine. 
D) creatine. 
E) urea. 
A) ammonia. 
B) uric acid. 
C) guanine. 
D) creatine. 
E) urea.

Question 7

Unlike reptiles and birds,mammals possess a muscular __________ that separates the thoracic and abdominal cavities.

Accepted Answer

A) diaphragm 
B) costal partition 
C) rectus abdominis 
D) visceral septum 
E) interthoracic septum 
A) diaphragm 
B) costal partition 
C) rectus abdominis 
D) visceral septum 
E) interthoracic septum

Question 8

The duck-billed platypus and the echidna belong to the subclass

Accepted Answer

A) Metatheria. 
B) Eutheria. 
C) Prototheria. 
D) Mesotheria. 
E) Theria. 
A) Metatheria. 
B) Eutheria. 
C) Prototheria. 
D) Mesotheria. 
E) Theria.

Question 9

The secondary palate allows mammals to

Accepted Answer

A) chew while swallowing. 
B) swallow while chewing. 
C) breathe while swallowing. 
D) breathe while drinking. 
E) breathe while chewing. 
A) chew while swallowing. 
B) swallow while chewing. 
C) breathe while swallowing. 
D) breathe while drinking. 
E) breathe while chewing.

Question 10

The most accepted explanation for the mass extinction event at the Cretaceous-Tertiary boundary is

Accepted Answer

A) volcanic activity in Asia. 
B) an asteroid impact in Central America. 
C) climate change brought on by Australian fires. 
D) a freshwater bacteria that caused kidney failure. 
E) a virus spread by small mammals. 
A) volcanic activity in Asia. 
B) an asteroid impact in Central America. 
C) climate change brought on by Australian fires. 
D) a freshwater bacteria that caused kidney failure. 
E) a virus spread by small mammals.

Question 11

The __________ are the "pouched" mammals.

Accepted Answer

A) monotremes 
B) marsupials 
C) ungulates 
D) true placental mammals 
E) edentates 
A) monotremes 
B) marsupials 
C) ungulates 
D) true placental mammals 
E) edentates

Question 12

__________ is a period of winter-long inactivity in which the hypothalamus of the brain slows metabolic,heart,and respiratory rates.

Accepted Answer

A) Winter sleep 
B) Hibernation 
C) Aestivation 
D) Torpor 
E) Basking 
A) Winter sleep 
B) Hibernation 
C) Aestivation 
D) Torpor 
E) Basking

Question 13

Most female mammals undergo a(n)__________ cycle,which includes the time during which the female is behaviorally and physiologically receptive to the male.

Accepted Answer

A) implantation 
B) estrus 
C) fertilization 
D) menstrual 
E) vaginal 
A) implantation 
B) estrus 
C) fertilization 
D) menstrual 
E) vaginal

Question 14

Mammals are considered to have evolved from reptiles known as

Accepted Answer

A) crocodilians. 
B) cotylosaurs. 
C) therapsids. 
D) conodonts. 
E) thecodonts. 
A) crocodilians. 
B) cotylosaurs. 
C) therapsids. 
D) conodonts. 
E) thecodonts.

Question 15

Most mammals are

Accepted Answer

A) monogamous. 
B) ovoviviparous. 
C) edentulate. 
D) viviparous. 
E) oviparous. 
A) monogamous. 
B) ovoviviparous. 
C) edentulate. 
D) viviparous. 
E) oviparous.

Question 16

The length of time that mammalian young spend developing in the female reproductive tract is called the

Accepted Answer

A) embryonic diapause. 
B) estrous cycle. 
C) incubation period. 
D) gestation period. 
E) development cycle. 
A) embryonic diapause. 
B) estrous cycle. 
C) incubation period. 
D) gestation period. 
E) development cycle.

Question 17

Specialized guard hairs called __________ occur around the nose,eyes,and mouth of many mammals; these hairs are extremely sensitive to displacement.

Accepted Answer

A) vibrissae 
B) arrector pili 
C) pelage 
D) cirri 
E) flagella 
A) vibrissae 
B) arrector pili 
C) pelage 
D) cirri 
E) flagella

Question 18

The excretory organs of mammals are

Accepted Answer

A) protonephridia. 
B) renal glands. 
C) green glands. 
D) metanephric kidneys. 
E) malpighian tubules. 
A) protonephridia. 
B) renal glands. 
C) green glands. 
D) metanephric kidneys. 
E) malpighian tubules.

Question 19

Muscles called __________ are responsible for making hairs stand on end.

Accepted Answer

A) follicular erectors 
B) pelage adductors 
C) pelage abductors 
D) vibrissal erectors 
E) arrector pili 
A) follicular erectors 
B) pelage adductors 
C) pelage abductors 
D) vibrissal erectors 
E) arrector pili

Question 20

The marsupial mammals belong to infraclass

Accepted Answer

A) Prototheria. 
B) Eutheria. 
C) Metatheria. 
D) Theria. 
E) Mesotheria. 
A) Prototheria. 
B) Eutheria. 
C) Metatheria. 
D) Theria. 
E) Mesotheria.

Exam 22: Mammals: Synapsid Amniotes

Which of the following is NOT a mammalian characteristic?

The order of mammals with the largest number of species is the order

The synapsid lineage was the first amniote lineage to diversify,starting about __________ years ago.

The duck-billed platypus is referred to as a(n)

Many humans carry a small percentage of DNA from Homo neanderthalensis.Why?

The major excretory product of most mammals is

Unlike reptiles and birds,mammals possess a muscular __________ that separates the thoracic and abdominal cavities.

The duck-billed platypus and the echidna belong to the subclass

The secondary palate allows mammals to

The most accepted explanation for the mass extinction event at the Cretaceous-Tertiary boundary is

The __________ are the "pouched" mammals.

__________ is a period of winter-long inactivity in which the hypothalamus of the brain slows metabolic,heart,and respiratory rates.

Most female mammals undergo a(n)__________ cycle,which includes the time during which the female is behaviorally and physiologically receptive to the male.

Mammals are considered to have evolved from reptiles known as

Most mammals are

The length of time that mammalian young spend developing in the female reproductive tract is called the

Specialized guard hairs called __________ occur around the nose,eyes,and mouth of many mammals; these hairs are extremely sensitive to displacement.

The excretory organs of mammals are

Muscles called __________ are responsible for making hairs stand on end.

The marsupial mammals belong to infraclass

Zoology: an Evolutionary and Ecological Perspective

Cells, tissues, organs, and Organ Systems of Animals

Cell Division and Inheritance

Evolution: History and Evidence

Evolution and Gene Frequencies

Ecology: Preserving the Animal Kingdom

Animal Taxonomy, phylogeny, and Organization

Animal-Like Protists: the Protozoa

Multicellular and Tissue Levels of Organization

The Smaller Lophotrochozoan Phyla

Molluscan Success

Annelida: the Metameric Body Form

The Smaller Ecdysozoan Phyla

The Arthropods: Blueprint for Success

The Pancrustacea: Crustacea and Hexapoda

Ambulacraria: Echinoderms and Hemichordates

Chordata: Urochordata and Cephalochordata

The Fishes: Vertebrate Success in Water

Amphibians: the First Terrestrial Vertebrates

Reptiles: Diapsid Amniotes

Birds: Reptiles by Another Name

Protection, support, and Movement

Communication I: Nervous and Sensory Systems

Communication II: the Endocrine System and Chemical Messengers

Circulation and Gas Exchange

Nutrition and Digestion

Temperature and Body Fluid Regulation

Reproduction and Development

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