Question 1

Which is NOT one of the cynodont modifications?

Accepted Answer

A)  Slender bones with better muscle attachment 
B)  A secondary bony palate that allowed breathing while holding prey 
C)  A stronger bite 
D)  A high metabolic rate 
E)  All of the choices are cynodont modifications 
A)  Slender bones with better muscle attachment 
B)  A secondary bony palate that allowed breathing while holding prey 
C)  A stronger bite 
D)  A high metabolic rate 
E)  All of the choices are cynodont modifications

Question 2

Of the two kinds of mammalian sweat glands,the one that produces a watery sweat is called the ____ gland.

Accepted Answer

The answer of Of the two kinds of mammalian sweat...

Question 3

A grazing animal,such as a cow,that mainly had to shear off grass and grind it would lack

Accepted Answer

A)  molars. 
B)  incisors. 
C)  canines. 
D)  This animal would need all these teeth. 
E)  This animal would only need molars. 
A)  molars. 
B)  incisors. 
C)  canines. 
D)  This animal would need all these teeth. 
E)  This animal would only need molars.

Question 4

Mammals began a dramatic expansion in the

Accepted Answer

A)  Pleistocene. 
B)  Paleocene. 
C)  Oligocene. 
D)  Triassic. 
E)  Eocene. 
A)  Pleistocene. 
B)  Paleocene. 
C)  Oligocene. 
D)  Triassic. 
E)  Eocene.

Question 5

Compare the horns of the pronghorn antelope with the true horns of bovids and the horns of the giraffe.

Accepted Answer

The horns of the pronghorn antelope are

Question 6

True horns are

Accepted Answer

A)  the same as antlers. 
B)  restricted to males. 
C)  not normally shed. 
D)  usually branched. 
E)  seasonal and not continuously grown. 
A)  the same as antlers. 
B)  restricted to males. 
C)  not normally shed. 
D)  usually branched. 
E)  seasonal and not continuously grown.

Question 7

What evidence do we have that mammary glands evolved from apocrine glands?

Accepted Answer

Mammary glands, which are specialized st

Question 8

The fertility cycle of the female mammal is referred to as the ___________ cycle.

Accepted Answer

The answer of The fertility cycle of the female mammal...

Question 9

The glands that are NOT derived from the mammalian integument are

Accepted Answer

A)  sebaceous glands. 
B)  sweat glands. 
C)  scent glands. 
D)  mammary glands. 
E)  All of the choices are derived from integument 
A)  sebaceous glands. 
B)  sweat glands. 
C)  scent glands. 
D)  mammary glands. 
E)  All of the choices are derived from integument

Question 10

Which of the following is NOT correct?

Accepted Answer

A)  Most mammals have definite mating seasons 
B)  Many male mammals are capable of fertile copulation at any time 
C)  The estrous cycle allows females to mate at any time of the year 
D)  Estrus is a short period of mammalian "heat." 
E)  All of the choices are correct 
A)  Most mammals have definite mating seasons 
B)  Many male mammals are capable of fertile copulation at any time 
C)  The estrous cycle allows females to mate at any time of the year 
D)  Estrus is a short period of mammalian "heat." 
E)  All of the choices are correct

Question 11

Explain the changes in morphology of the lower jaw,and its joint with the rest of the skull,that occurred during the evolution of mammals.

Accepted Answer

The evolution of mammals brought about s

Question 12

Some northern mammals have a white winter fur that

Accepted Answer

A)  serves to conserve body heat by reducing radiation loss. 
B)  represents living rather than dead hair cells. 
C)  serves to camouflage the animal while also allowing for the transmission of sunlight to the body. 
D)  insulates the body better. 
E)  All of the choices are correct 
A)  serves to conserve body heat by reducing radiation loss. 
B)  represents living rather than dead hair cells. 
C)  serves to camouflage the animal while also allowing for the transmission of sunlight to the body. 
D)  insulates the body better. 
E)  All of the choices are correct

Question 13

Discuss the significance of the evolution of heterodonty - the specialization of mammalian teeth.

Accepted Answer

The evolution of heterodonty, or the spe

Exam 28: Mammals

Which is NOT one of the cynodont modifications?

Of the two kinds of mammalian sweat glands,the one that produces a watery sweat is called the ____ gland.

A grazing animal,such as a cow,that mainly had to shear off grass and grind it would lack

Mammals began a dramatic expansion in the

Compare the horns of the pronghorn antelope with the true horns of bovids and the horns of the giraffe.

True horns are

What evidence do we have that mammary glands evolved from apocrine glands?

The fertility cycle of the female mammal is referred to as the ___________ cycle.

The glands that are NOT derived from the mammalian integument are

Which of the following is NOT correct?

Explain the changes in morphology of the lower jaw,and its joint with the rest of the skull,that occurred during the evolution of mammals.

Some northern mammals have a white winter fur that

Discuss the significance of the evolution of heterodonty - the specialization of mammalian teeth.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

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