Deck 22: Mammals: Synapsid Amniotes

Question 1

Which of the following is NOT a mammalian characteristic?

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

Answer 1

D

Question 2

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

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

Answer 2

A

Question 3

The marsupial mammals belong to infraclass

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

Answer 3

C

Question 4

Mammals are considered to have evolved from reptiles known as

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

Question 5

The only kind of therapsids to survive the extinction event at the Permian-Triassic boundary were the

A)cynodonts.
B)ornithischians.
C)pelycosaurs.
D)saurischians.
E)thecodonts.

Question 6

__________ glands are associated with hair follicles and secrete oil.

A)Eccrine
B)Sebaceous
C)Sudoriferous
D)Apocrine
E)Musk

Question 7

The beginning of the "age of mammals" coincides with the beginning of this period,about 70 million years ago.

A)Tertiary
B)Triassic
C)Permian
D)Silurian
E)Devonian

Question 8

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

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 9

The coat of hair on mammals is referred to as

A)under hairs.
B)guard hairs.
C)pelage.
D)furrage.
E)vibrissae.

Question 10

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

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

Question 11

Opossums belong to the group of mammals known as

A)therapsids.
B)monotremes.
C)cynodonts.
D)marsupials.
E)placentals.

Question 12

The secondary palate allows mammals to

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

Question 13

__________ glands are functional in female mammals and are present,but non-functional,in males.

A)Sudoriferous
B)Apocrine
C)Sebaceous
D)Mammary
E)Eccrine

Question 14

A common opening for excretory,reproductive,and digestive products is called a

A)cecum.
B)ilium.
C)duodenum.
D)cloaca.
E)carpus.

Question 15

Which of the following animals does not possess a cloaca?

A)lizard
B)snake
C)beaver
D)echidna
E)duck-billed platypus

Question 16

In their reproductive habits,the monotremes are

A)parthenogenetic.
B)oviparous.
C)viviparous.
D)ovoviviparous.
E)marsupial.

Question 17

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

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

Question 18

The placental mammals belong to the infraclass

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

Question 19

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

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

Question 20

The __________ are the "pouched" mammals.

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

Question 21

Sudoriferous glands that produce watery secretions that function in evaporative cooling are called __________ glands.

A)sebaceous
B)eccrine
C)mucous
D)endocrine
E)apocrine

Question 22

Most mammals have two sets of teeth during their lifetime.The first set is called the __________ teeth.

A)deciduous
B)homodont
C)semipermanent
D)conodont
E)suckling

Question 23

The major excretory product of most mammals is

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

Question 24

The protein that accumulates to form claws,horns,hooves,and nails is

A)keratin.
B)microtubulin.
C)sclerotin.
D)carotene.
E)chitin.

Question 25

A portion of the tubule system of their nephrons allows mammals to produce urine that is 2 to 22 times as concentrated as their blood.This part of the tubular system is called the

A)loop of the nephron.
B)ureter.
C)urethra.
D)glomerulus.
E)malpighian loop.

Question 26

The excretory organs of mammals are

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

Question 27

Mammalian glands called __________ glands secrete pheromones.

A)eccrine
B)endocrine
C)musk
D)mammary
E)apocrine

Question 28

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

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

Question 29

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

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

Question 30

Mammalian teeth specialized for gnawing or nipping are the

A)molars.
B)incisors.
C)canines.
D)premolars.
E)fangs.

Question 31

In members of the mammalian order Carnivora,the fourth upper pre-molars and first lower molars form a scissors-like shearing surface called the

A)diastema.
B)fangs.
C)predatory dentition.
D)shearing teeth.
E)carnassial apparatus.

Question 32

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

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

Question 33

Mammalian teeth specialized for catching,killing,or tearing prey are

A)incisors.
B)maxillaries.
C)canines.
D)molars.
E)premolars.

Question 34

A mammal that feeds on the flesh of another animal is called a(n)

A)carnivore.
B)herbivore.
C)insectivore.
D)omnivore.
E)frugivore.

Question 35

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

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

Question 36

Specializations of the digestive tract of most herbivores reflect the difficulty of digesting foods rich in

A)plant protein.
B)carotene.
C)bacteria.
D)cellulose.
E)phytolipids.

Question 37

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

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

Question 38

Delayed fertilization in bats is apparently

A)necessary to ensure fertility.
B)related to their reptilian ancestry.
C)an adaptation to winter dormancy.
D)a prelude to courtship.
E)meant to ensure that multiple embryos will be formed.

Question 39

In the rodents,the teeth known as __________ grow throughout life and have enamel only on their front surfaces.

A)fangs
B)canines
C)tusks
D)incisors
E)molars

Question 40

Animals that feed primarily on arthropods and other soft-bodied invertebrates are called

A)omnivores.
B)insectivores.
C)sanguinivores.
D)herbivores.
E)carnivores.

Question 41

Horses,rabbits,and many rodents have a(n)__________ that serves as a fermentation pouch where microorganisms aid in the digestion of cellulose.

A)ruminant
B)appendix
C)gizzard
D)crop
E)cecum

Question 42

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

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 43

Bats are classified in order

A)Chiroptera.
B)Insectivora.
C)Primates.
D)Cetacea.
E)Lagomorpha.

Question 44

Most mammals are

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

Question 45

Primarily grazing animals with hooves are called

A)primates.
B)ungulates.
C)carnivores.
D)cetaceans.
E)rodents.

Question 46

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

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