Question 1

Scabies mite (Sarcoptes scabei)infections

Accepted Answer

A)  are harmless and live in human hair follicles. 
B)  cause intense itching. 
C)  are the causative agent of "chiggers.". 
D)  are fatal infections because they carry Lyme disease. 
E)  are fatal infections because they carry Rocky Mountain Spotted Fever. 
A)  are harmless and live in human hair follicles. 
B)  cause intense itching. 
C)  are the causative agent of "chiggers.". 
D)  are fatal infections because they carry Lyme disease. 
E)  are fatal infections because they carry Rocky Mountain Spotted Fever. B

Question 2

Centipedes

Accepted Answer

A)  are herbivorous. 
B)  have poison claws. 
C)  have five pairs of legs. 
D)  use gills for respiration. 
E)  are parthenogenetic and always oviparous. 
A)  are herbivorous. 
B)  have poison claws. 
C)  have five pairs of legs. 
D)  use gills for respiration. 
E)  are parthenogenetic and always oviparous. B

Question 3

The excretory system of insects and spiders works by

Accepted Answer

A)  excreting wastes across the digestive system membrane. 
B)  active transport of just the waste molecules across the tubules. 
C)  transport of all ions and solutes across the tubule and retrieval of water and useful ions in the rectum. 
D)  excretion of only ions and wastes in the rectum. 
E)  packaging and sealing off toxic wastes until the organism dies. 
A)  excreting wastes across the digestive system membrane. 
B)  active transport of just the waste molecules across the tubules. 
C)  transport of all ions and solutes across the tubule and retrieval of water and useful ions in the rectum. 
D)  excretion of only ions and wastes in the rectum. 
E)  packaging and sealing off toxic wastes until the organism dies. C

Question 4

Arthropods are successful because they have

Accepted Answer

A)  a very efficient respiratory system. 
B)  highly developed sensory organs. 
C)  reduced competition through metamorphosis. 
D)  a protective exoskeleton that allows both protection and mobility. 
E)  All of the choices are correct. 
A)  a very efficient respiratory system. 
B)  highly developed sensory organs. 
C)  reduced competition through metamorphosis. 
D)  a protective exoskeleton that allows both protection and mobility. 
E)  All of the choices are correct.

Question 5

Members of the subphylum ________________ were abundant during the Cambrian period.

Accepted Answer

The answer of Members of the subphylum ________________ were abundant...

Question 6

The excretory system of spiders and insects is a structure known as ________ ________.

Accepted Answer

The answer of The excretory system of spiders and insects...

Question 7

The arthropodan cuticle is not entirely hardened.Why not (think of the need to be mobile and flexible)?

Accepted Answer

The arthropodan cuticle, which is the ex

Question 8

You are given a large tropical millipede to raise in a humid terrarium lined with soil and leaf litter.What should you feed it?

Accepted Answer

A)  Insects 
B)  Sliced apples and dead soft plant tissues 
C)  Freshly cut wood 
D)  Fresh meat or dog food 
E)  All of the choices would be food for a millipede 
A)  Insects 
B)  Sliced apples and dead soft plant tissues 
C)  Freshly cut wood 
D)  Fresh meat or dog food 
E)  All of the choices would be food for a millipede

Question 9

For scorpions,mating is particularly risky for the male since the female can eat the male.Therefore,the male scorpion

Accepted Answer

A)  uses the same procedure as male spiders. 
B)  holds the females pincers in a "dance" position, deposits a spermatophore on the ground and dances her over it. 
C)  transfers a spermatophore from between his body segments directly into hers. 
D)  fertilizes her by hypodermic insemination where the sperm is injected inside her body cavity. 
E)  still uses regular mating since this copulatory position keeps her facing away safely. 
A)  uses the same procedure as male spiders. 
B)  holds the females pincers in a "dance" position, deposits a spermatophore on the ground and dances her over it. 
C)  transfers a spermatophore from between his body segments directly into hers. 
D)  fertilizes her by hypodermic insemination where the sperm is injected inside her body cavity. 
E)  still uses regular mating since this copulatory position keeps her facing away safely.

Question 10

Why is the formation of the cuticular exoskeleton with jointed appendages considered central to the success of arthropod diversity?

Accepted Answer

The formation of the cuticular exoskelet

Question 11

The term "myriapod" includes

Accepted Answer

A)  all arthropods, gastropods, and brachiopods. 
B)  just the millipedes and centipedes. 
C)  insects and their ancestors. 
D)  all arthropods except arachnids and crustaceans. 
E)  centipedes, millipedes, pauropods and symphylans but not insects. 
A)  all arthropods, gastropods, and brachiopods. 
B)  just the millipedes and centipedes. 
C)  insects and their ancestors. 
D)  all arthropods except arachnids and crustaceans. 
E)  centipedes, millipedes, pauropods and symphylans but not insects.

Question 12

What is the evidence that suggests pycnogonids are more closely related to crustaceans than to other arthropods? Why is this evidence contrary to molecular evidence that suggests otherwise?

Accepted Answer

The evidence that suggests pycnogonids a

Question 13

Pauropods lack

Accepted Answer

A)  eyes. 
B)  tracheae. 
C)  a circulatory system. 
D)  spiracles. 
E)  All of the choices are lacking in pauropods. 
A)  eyes. 
B)  tracheae. 
C)  a circulatory system. 
D)  spiracles. 
E)  All of the choices are lacking in pauropods.

Question 14

Horseshoe crabs

Accepted Answer

A)  are, like their relatives the trilobites and eurypterids, now extinct. 
B)  are poisonous to humans. 
C)  live in freshwater habitats. 
D)  have a long, spine-like telson. 
E)  are adult forms of trilobites. 
A)  are, like their relatives the trilobites and eurypterids, now extinct. 
B)  are poisonous to humans. 
C)  live in freshwater habitats. 
D)  have a long, spine-like telson. 
E)  are adult forms of trilobites.

Question 15

You find a white,soft-bodied myriapod in the soil in a flower pot.It has long antenna but lacks eyes and fang-like claws.It most likely is a

Accepted Answer

A)  pauropod. 
B)  symphylan. 
C)  centipede. 
D)  millipede. 
E)  None of the choices are correct. 
A)  pauropod. 
B)  symphylan. 
C)  centipede. 
D)  millipede. 
E)  None of the choices are correct.

Question 16

Discuss features of ticks that make them such excellent vectors of human arthropod-borne diseases.

Accepted Answer

Ticks are excellent vectors of human art

Question 17

The mites and ticks carry their mouthparts on a little anterior projection called the

Accepted Answer

A)  hypostome. 
B)  rostrum. 
C)  capitulum. 
D)  pedipalp. 
E)  pectin. 
A)  hypostome. 
B)  rostrum. 
C)  capitulum. 
D)  pedipalp. 
E)  pectin.

Question 18

Insects are basically small creatures.How does a small organism retard water loss? Discuss both structural and physiological mechanisms.

Accepted Answer

Insects have evolved various structural

Question 19

The correct order for layers of ectoskeleton from outside to inside is

Accepted Answer

A)  endocuticle-epicuticle-exocuticle. 
B)  endocuticle-exocuticle-epicuticle. 
C)  exocuticle-endocuticle-epicuticle. 
D)  epicuticle-exocuticle-endocuticle. 
E)  exocuticle-epicuticle-endocuticle. 
A)  endocuticle-epicuticle-exocuticle. 
B)  endocuticle-exocuticle-epicuticle. 
C)  exocuticle-endocuticle-epicuticle. 
D)  epicuticle-exocuticle-endocuticle. 
E)  exocuticle-epicuticle-endocuticle.

Question 20

Many millipedes defend themselves by secreting toxic or repellant fluids from _________ __________.

Accepted Answer

repugnator

Exam 19: Trilobites, Chelicerates, and Myriapods

Scabies mite (Sarcoptes scabei)infections

Centipedes

The excretory system of insects and spiders works by

Arthropods are successful because they have

Members of the subphylum ________________ were abundant during the Cambrian period.

The excretory system of spiders and insects is a structure known as ________ ________.

The arthropodan cuticle is not entirely hardened.Why not (think of the need to be mobile and flexible)?

You are given a large tropical millipede to raise in a humid terrarium lined with soil and leaf litter.What should you feed it?

For scorpions,mating is particularly risky for the male since the female can eat the male.Therefore,the male scorpion

Why is the formation of the cuticular exoskeleton with jointed appendages considered central to the success of arthropod diversity?

The term "myriapod" includes

What is the evidence that suggests pycnogonids are more closely related to crustaceans than to other arthropods? Why is this evidence contrary to molecular evidence that suggests otherwise?

Pauropods lack

Horseshoe crabs

You find a white,soft-bodied myriapod in the soil in a flower pot.It has long antenna but lacks eyes and fang-like claws.It most likely is a

Discuss features of ticks that make them such excellent vectors of human arthropod-borne diseases.

The mites and ticks carry their mouthparts on a little anterior projection called the

Insects are basically small creatures.How does a small organism retard water loss? Discuss both structural and physiological mechanisms.

The correct order for layers of ectoskeleton from outside to inside is

Many millipedes defend themselves by secreting toxic or repellant fluids from _________ __________.

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

Filters

The excretory system of spiders and insects is a structure known as .

Many millipedes defend themselves by secreting toxic or repellant fluids from _ __.