Question 1

The arthropods

Accepted Answer

A)  make up more than three-fourths of all the known species of animals. 
B)  are more widely and more densely distributed throughout the world than members of any other phylum of animals. 
C)  are segmented eucoelomate protostomes with well-developed organ systems. 
D)  are limited in size and generally are smaller than 60 centimeters in length. 
E)  All of the choices are correct. 
A)  make up more than three-fourths of all the known species of animals. 
B)  are more widely and more densely distributed throughout the world than members of any other phylum of animals. 
C)  are segmented eucoelomate protostomes with well-developed organ systems. 
D)  are limited in size and generally are smaller than 60 centimeters in length. 
E)  All of the choices are correct.

Question 2

What is the evolutionary significance of arthropodization? Aren't tetrapods such as humans as successful as arthropods? Explain your reasoning.

Accepted Answer

The evolutionary significance of arthrop

Question 3

How do spiders eat?

Accepted Answer

A)  A spider mashes and manipulates food with its fangs so it can be swallowed whole. 
B)  Food is soaked into silk threads which are then consumed. 
C)  Food is partly digested externally and the nutritive juices are sucked into the stomach. 
D)  Food is stored in a crop and ground up in a gizzard. 
E)  Food is swallowed whole. 
A)  A spider mashes and manipulates food with its fangs so it can be swallowed whole. 
B)  Food is soaked into silk threads which are then consumed. 
C)  Food is partly digested externally and the nutritive juices are sucked into the stomach. 
D)  Food is stored in a crop and ground up in a gizzard. 
E)  Food is swallowed whole.

Question 4

Eurypterids

Accepted Answer

A)  resembled insects. 
B)  are extinct. 
C)  are called sea spiders. 
D)  were very small aquatic scorpions. 
E)  were huge ancient scorpions that wandered on land. 
A)  resembled insects. 
B)  are extinct. 
C)  are called sea spiders. 
D)  were very small aquatic scorpions. 
E)  were huge ancient scorpions that wandered on land.

Question 5

Arthropods are

Accepted Answer

A)  carnivorous. 
B)  herbivorous. 
C)  omnivorous. 
D)  both carnivorous and herbivorous. 
E)  All of these choices are correct. 
A)  carnivorous. 
B)  herbivorous. 
C)  omnivorous. 
D)  both carnivorous and herbivorous. 
E)  All of these choices are correct.

Question 6

Do you believe our current understanding of the phylogeny of the arthropods is the correct one? Why or why not?

Accepted Answer

As a non-expert in the field of phylogen

Question 7

The mouthparts of ticks and mites are carried on an anterior projection called the __________.

Accepted Answer

The answer of The mouthparts of ticks and mites are...

Question 8

Four classes of myriapods are Chilopoda,Pauropoda,Symphyla and _____________.

Accepted Answer

The answer of Four classes of myriapods are Chilopoda,Pauropoda,Symphyla and...

Question 9

During the process of "arthropodization," the role of the coelomic compartments as a _________ ________ was lost.

Accepted Answer

hydrostati

Question 10

Why are the Opiliones considered to be in a clade with the scorpions and not so closely aligned with the Acari?

Accepted Answer

Opiliones, commonly known as harvestmen

Question 11

The tough,resistant,nitrogenous polysaccharide in the cuticle of arthropods is ________________.

Accepted Answer

The answer of The tough,resistant,nitrogenous polysaccharide in the cuticle of...

Question 12

Tactile organs on the ventral side of scorpions are ________________.

Accepted Answer

The answer of Tactile organs on the ventral side of...

Question 13

Trilobites exist today as

Accepted Answer

A)  freshwater dwellers. 
B)  terrestrial crustaceans. 
C)  aquatic insects. 
D)  horseshoe crabs. 
E)  fossils only; they are all extinct. 
A)  freshwater dwellers. 
B)  terrestrial crustaceans. 
C)  aquatic insects. 
D)  horseshoe crabs. 
E)  fossils only; they are all extinct.

Question 14

Outline the apparent reasons why arthropods have achieved such incredible diversity and abundance.

Accepted Answer

There are several apparent reasons why a

Question 15

Male sea spiders have a subsidiary pair of legs called _____________ on which they carry developing eggs.

Accepted Answer

The answer of Male sea spiders have a subsidiary pair...

Question 16

During mating in spiders,the male inserts his ____________ into the genital opening of the female.

Accepted Answer

The answer of During mating in spiders,the male inserts his...

Question 17

You would be most likely to find a pauropod if you examined

Accepted Answer

A)  the fur of a mammal, since they are parasites. 
B)  under a rock in a stream. 
C)  moist soil, leaf litter, or decaying debris. 
D)  inside the juicy tissues of a host plant. 
E)  an intertidal pool. 
A)  the fur of a mammal, since they are parasites. 
B)  under a rock in a stream. 
C)  moist soil, leaf litter, or decaying debris. 
D)  inside the juicy tissues of a host plant. 
E)  an intertidal pool.

Question 18

The millipedes

Accepted Answer

A)  bear two pairs of legs on most body segments. 
B)  are very beneficial because they feed on insects. 
C)  are more active than centipedes because they have more legs. 
D)  have flattened bodies in contrast to centipedes. 
E)  lack spiracles and tracheae and therefore differ from centipedes. 
A)  bear two pairs of legs on most body segments. 
B)  are very beneficial because they feed on insects. 
C)  are more active than centipedes because they have more legs. 
D)  have flattened bodies in contrast to centipedes. 
E)  lack spiracles and tracheae and therefore differ from centipedes.

Question 19

What makes the shell of a lobster so hard?

Accepted Answer

A)  It contains chitin which is hard and inflexible. 
B)  The procuticle is impregnated with calcium salts. 
C)  It is due solely to a tanning process. 
D)  The procuticle and epicuticle are laminated. 
E)  The shell protein contains more lipid. 
A)  It contains chitin which is hard and inflexible. 
B)  The procuticle is impregnated with calcium salts. 
C)  It is due solely to a tanning process. 
D)  The procuticle and epicuticle are laminated. 
E)  The shell protein contains more lipid.

Question 20

What carries Lyme disease?

Accepted Answer

A)  Dermacentor sp 
B)  Boophilus annulatus 
C)  Trombicula sp 
D)  Demodex sp 
E)  Ixodes sp 
A)  Dermacentor sp 
B)  Boophilus annulatus 
C)  Trombicula sp 
D)  Demodex sp 
E)  Ixodes sp

Exam 19: Trilobites, Chelicerates, and Myriapods

The arthropods

What is the evolutionary significance of arthropodization? Aren't tetrapods such as humans as successful as arthropods? Explain your reasoning.

How do spiders eat?

Eurypterids

Arthropods are

Do you believe our current understanding of the phylogeny of the arthropods is the correct one? Why or why not?

The mouthparts of ticks and mites are carried on an anterior projection called the __________.

Four classes of myriapods are Chilopoda,Pauropoda,Symphyla and _____________.

During the process of "arthropodization," the role of the coelomic compartments as a _________ ________ was lost.

Why are the Opiliones considered to be in a clade with the scorpions and not so closely aligned with the Acari?

The tough,resistant,nitrogenous polysaccharide in the cuticle of arthropods is ________________.

Tactile organs on the ventral side of scorpions are ________________.

Trilobites exist today as

Outline the apparent reasons why arthropods have achieved such incredible diversity and abundance.

Male sea spiders have a subsidiary pair of legs called _____________ on which they carry developing eggs.

During mating in spiders,the male inserts his ____________ into the genital opening of the female.

You would be most likely to find a pauropod if you examined

The millipedes

What makes the shell of a lobster so hard?

What carries Lyme disease?

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

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

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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During the process of "arthropodization," the role of the coelomic compartments as a _ was lost.