Question 1

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 2

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

Accepted Answer

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

Question 3

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 millipedeF) A) and D)
G) None of the above

Question 4

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.F) B) and D)
G) A) and B)

Question 5

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.F) B) and D)
G) B) and C)

Question 6

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.F) A) and D)
G) C) and D) B

Question 7

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.F) B) and C)
G) A) and B)

Question 8

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.F) B) and D)
G) A) and C) C

Question 9

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.F) C) and E)
G) A) and E)

Question 10

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

Accepted Answer

repugnator...

Question 11

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.F) All of the above
G) B) and E)

Question 12

Pauropods lack

Accepted Answer

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

Question 13

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 14

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.F) A) and C)
G) A) and E)

Question 15

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.F) A) and E)
G) B) and E) B

Question 16

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 17

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 18

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.F) A) and E)
G) D) and E)

Question 19

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 20

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

Accepted Answer

Ticks are excellent vectors of human art...

Exam 19: Trilobites, Chelicerates, and Myriapods

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

Correct AnswerAnswered by ExamLex AIThe arthropodan cuticle, which is the ex...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Horseshoe crabs

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Scabies mite (Sarcoptes scabei) infections

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

The excretory system of insects and spiders works by

Correct AnswerverifiedC

The term "myriapod" includes

Correct AnswerverifiedShow Answer

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

Correct Answerverifiedrepugnator...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Pauropods lack

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Arthropods are successful because they have

Correct AnswerverifiedShow Answer

Centipedes

Correct AnswerverifiedB

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

Correct AnswerAnswered by ExamLex AIInsects have evolved various structural ...View AnswerShow Answer

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?

Correct AnswerAnswered by ExamLex AIThe evidence that suggests pycnogonids a...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerAnswered by ExamLex AIThe formation of the cuticular exoskelet...View AnswerShow Answer

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

Correct AnswerAnswered by ExamLex AITicks are excellent vectors of human art...View AnswerShow Answer

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The arthropodan cuticle, which is the ex...
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B

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C

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

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

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B

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Insects have evolved various structural ...
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The evidence that suggests pycnogonids a...
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verified

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The formation of the cuticular exoskelet...
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Ticks are excellent vectors of human art...
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