Arthropod Jeopardy

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General Trilobita & Pictures

Myriapoda & Crustacea

Chelicerata Hexapoda

Final Jeopardy

What % of all animals are arthropods and what does the word “Arthropoda”

actually mean?

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80% of all animal species are arthropods

“Jointed Legs”

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What is an advantage and a disadvantage of the compound eye?

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Advantage – Ultra wide viewing angle

Disadvantage – Poor image resolution

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Why must all arthropods molt?

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They must shed their hard exoskeleton so they can grow

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Compare & contrast complete

and incomplete metamorphosis

9Incomplete – 3 stages (egg, nymph, & adult) where the nymph looks like the

adult but wingless

Complete – 4 stages (egg, larva, pupa, adult) where the larva looks nothing

like the adult

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What are the various forms of respiration that can be found in members of the five Subphyla of

arthropods?

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Trilobita & Crustacea – GillsChelicerata – Book lungs

Hexapoda & Myriapoda – Spiracles

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What is the name of the extinction event that killed the trilobites, how long ago

was it, what was the cause of the extinction, and what two Eras of the

Phanerozoic Eon were divided by this extinction event?

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The Permian-Triassic extinction event occurred 250 mya and was caused by a super volcano that erupted in what is now modern-day Siberia. This event was the division point between the

Paleozoic and Mesozoic Eras

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Scorpionfly Brown Recluse

Butterfly Silverfish

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How has the study of trilobites led to

a better understanding of

plate tectonic theory?

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Since trilobite fossils have been found on the top of Mt. Everest, it shows

that Mt. Everest was once underwater and that the Earth is a dynamic and

ever-changing planet.

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Mayfly

Caddisfly

SpringtailLouse

Earwig

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What two types of

organisms are found in subphylum Myriapoda

and what does the word “Myriapoda” actually

mean?

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Centipedes & Millipedes

“Many Legs”

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Name at least 4 members of Subphylum Crustacea

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Lobsters, crabs, shrimp, crayfish, barnacles, krill,

sea monkeys, etc…

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How can you tell the difference between male

and female crayfish?

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The first pair of swimmerets on male crayfish are enlarged for

sperm deposition.

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Complete the following chart:

Chilopoda Diplopoda

Common name

# Legs per segment

Coloration

Body shape

Diet

Toxin

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Chilopoda Diplopoda

Common name Centipedes Millipedes

# Legs per segment 1 pair or 2 legs 2 pair or 4 legs

Coloration Drab/Earth tones Bright/Colorful

Body shape Flattened Tubular

Diet Carnivorous Herbivorous

Toxin Venomous Poisonous

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Distinguish between chelicerae & pedipalps

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Chelicerae – mouthparts usually adapted into fangs

Pedipalps – appendages used to grasp food and bring towards the

mouth

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Distinguish between neurotoxins and necrotoxins

and give an example of a spider that has each type of

venom

35Neurotoxin – toxin that blocks the signals from the brain usually resulting in death by suffocation (black widow)

Necrotoxin – toxin that destroys flesh and causes local cell death at the bite site (brown recluse)

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What types of organisms are found in the arachnid orders Scorpiones, Acari,

and Araneae?

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Scorpiones – scorpionsAcari – ticks, mites, & chiggers

Araneae - spiders

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What types of organisms are found in the following Chelicerata Classes:

EurypteridaXiphosura

Pycnogondia

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Eurypterida – Giant sea scorpionsXiphosura – Horseshoe crabs

Pycnogondia – Sea spiders

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What does the word “Hexapoda” actually mean and what type of organisms are considered hexapods?

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Hexapoda means “six legs” and the hexapods are commonly

known as insects

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What four major mouthpart adaptations may be seen in

hexapods?

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Chewing, sponging, siphoning, and piercing

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48Match the word to the definition

Straight Wing HemipteraMembrane Wing ColeopteraHalf Wing DipteraSame Wing OrthopteraTwo Wing HomopteraShield Wing Hymenoptera

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Straight Wing = OrthopteraMembrane Wing = Hymenoptera

Half Wing = HemipteraSame Wing = Homoptera

Two Wing = DipteraShield Wing = Coleoptera

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Describe how a honeybee’s waggle dance can show other bees where food is

located?

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The bee conveys direction by the angle of the dance in relation to the sun.

The bee conveys distance by the length of time spent during the waggle

portion of each dance cycle. One second = 1 km

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From what arthropod Subphylum did the hexapods evolve and how did this

evolution proceed?

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The hexapods evolved from the myriapods.

The elongated body of myriapod ancestors broke into three regions. The legs on the head

region evolved into complex mouthparts, the three pairs of legs on the thorax grew large enough to support the whole body, and the legs on the abdomen reabsorbed into the

organism as it evolved.