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zoologu > Arthropod > Flashcards

Arthropod Flashcards

1
Q

Arthropod characteristics(6)

A

Segmented
Invertebrate
Bilateral symmetry
Jointed appendages
Coelomate
Exoskeleton

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2
Q

Coelomate

A

Body cavity with complete lining

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3
Q

Chitin

A

Exoskeleton

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4
Q

Antennae

A

Detect:
movement
Sound
Chemicals

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5
Q

Pheromones

A

Communication chemicals

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6
Q

What senses do arthropods exhibit eyes?

A

May have two compound eyes and 3-8 simple eyes

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7
Q

Simple eye

A

One lens detects light

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8
Q

Compound eye

A

Many lenses detects movements and color

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9
Q

What is the arthropod body system?

A

Well developed nervous system

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10
Q

What circulatory system do arthropods have?

A

Open circulatory

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11
Q

How many hearts do arthropods have?

A

One or more hearts

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12
Q

Do arthropods have a complete digestive system?

A

Yes
Mouth, stomach, intestine, anus

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13
Q

Where are jointed appendages used for locomotion?

A

On the thorax

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14
Q

The earthworm has what kind of circulatory system?

A

A closed

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15
Q

Malpighian tubules

A

Remove waste

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16
Q

Where is the good muscular system attached to?

A

Inside of the exoskeleton

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17
Q

Arthropods mostly reproduce by??

A

Sexual reproduction

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18
Q

Internal fertilization

A

Land

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19
Q

External fertilization

A

Water

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20
Q

Parthenogenesis

A

Adults forms from an unfertilized egg(asexual reproduction)

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21
Q

Examples of social insects

A

Honeybees and ants

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22
Q

Unfertilized eggs

A

Haploid

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23
Q

In social insects, haploids developed into?

A

Male drones

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24
Q

In social insects, diploids develope into??

A

Workers and queens aka females

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25
Q

Fertilized eggs

A

Diploid

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26
Q

An increase of reproduction rates results from?

A

Parthenogenesis in arthropods

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27
Q

Exoskeletons in arthropods are?

A

Heavy and cannot grow

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28
Q

Molt

A

Shed their exoskeleton

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29
Q

Why do arthropods molt?

A

In order to grow

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30
Q

How often do arthropods molt?

A

4-7 times

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31
Q

Arthropods are very vulnerable when?

A

When they are molting

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32
Q

Tagmata

A

Body section

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33
Q

Arthropods have what three body sections?

A

Head
Thorax
Abdomen

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34
Q

Arthropods with two tagmata are…

A

Abdomen and cephalothorax

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35
Q

Cephalothorax

A

Fused head and throat

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36
Q

How many types of respiratory structures do arthropods have?

A

3 types

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37
Q

What are the three types of respiratory systems?

A

Gills
Tracheal tubes
Spiracles

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38
Q

Gills

A

Found in aquatic species

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39
Q

Tracheal tubes

A

Found in insects
Hallow air passageways

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40
Q

Spiracles

A

Openings that allows air to enter or leave

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41
Q

Book lungs

A

Air-filled chambers with leaflike plates
Some diffuse air directly through the body

42
Q

What type of gas exchange is found in spiders?

A

Book lungs

43
Q

Reproduction of arthropods are usually?

A

Dioecious(separate sexes)

44
Q

Oviparous

A

Females lay eggs, no embryonic development in mother

45
Q

Ovoviviparous

A

Embryos developed within egg in female

46
Q

Metamorphosis

A

Change in structure/form during development

47
Q

Complete

A

Egg, larva, pupa, adult

48
Q

Incomplete

A

Egg, nymph, adult

49
Q

Metamorphosis decreases competition for?

A

Food and space

50
Q

Chelicerata

A

Arachnids

51
Q

Crustacea

A

Crustaceans

52
Q

Hexapoda

A

Insects and springtails

53
Q

Myriapoda

A

Millipedes and centipedes

54
Q

Trilobitomorpha

A

Trilobites[ went extinct more than 250 million years ago]

55
Q

Class crustaceans

A

Mostly aquatic and have gills

56
Q

Head of crustaceans

A

2 pair antennae

57
Q

On the head of crustaceans how many pairs of mandible?

A

1 pair

58
Q

Mandible

A

Chewing mouthparts that open sideways

59
Q

In crustaceans how many pairs of maxillae on head?

A

2 pairs

60
Q

What kind of eyes do crustaceans have?

A

All have 2 compound eyes usually on movable stalks

61
Q

Some Crustaceans have how many pairs of walking legs?

A

5 pairs

62
Q

What is the only land crustacean?

A

Pill bugs

63
Q

Somite

A

A subsection on the thorax and abdomen

64
Q

Crustaceans have how many pairs of appendages per somite?

A

One pair

65
Q

Biramous

A

2 branches

66
Q

In crustaceans all appendages except what are biramous?

A

All but the first antennae

67
Q

Carapace

A

Dorsal section of the exoskeleton

68
Q

Crustaceans are what kind of feeder?

A

Suspension
Predator
Scavenger

69
Q

Examples of crustaceans

A

Crabs
Lobster
Shrimp
Crayfish
Barnacles
Water fleas(daphnia)
Pill bugs

70
Q

Arachnid examples

A

Spiders
Scorpions
Mites-largest group
Ticks

71
Q

What are the three dangerous spider species in North America

A

Brown recluse
Black widow
Hubo

72
Q

Brazilian wandering spider

A

Most venomous spider
Death from muscle shock

73
Q

Indian red scorpion

A

Most venomous pulmonary edema
Death

74
Q

Where are the deadly spiders and scorpions found typically?

A

Every habitat
Greatest size and diversity in tropical regions and arid regions

75
Q

Arachnids have how many jointed appendages?

A

6 pairs jointed appendages

76
Q

Arachnids have how many pairs of walking legs?

A

4 pairs of walking legs

77
Q

Arachnids have how many mouth pairs

A
78
Q

Arachnids have how many tagmata?

A

2

79
Q

Anterior arachnids

A

Cephalothorax

80
Q

Arachnids cephalothorax

A

Sense organs, mouthparts
No antennae, 6 pairs of legs

81
Q

Arachnids second pair= grab prey, assist in reproduction, large in male

A

Pedipalps

82
Q

Arachnids 3rd to 6th

A

Walking legs

83
Q

Posterior

A

Abdomen

84
Q

Abdomen

A

Genital opening
Book lungs

85
Q

Book lungs

A

Respiration

86
Q

Arachnids are solitary except

A

When mating

87
Q

Arachnids can display

A

Complex behavior patterns

88
Q

Spiders= oviparous

A

Females may guard eggs/young (hatch- born live)

89
Q

Scorpions =ovoviviparous or viviparous

A

Live birth of young=no eggs laid

90
Q

Do arachnids have an alimentary canal?

A

Yes

91
Q

Ticks and mites tagmata?

A

Single fused body section

92
Q

Scorpions

A

Many abdominal sections
Large pincers
Venomous stinger on tail

93
Q

Do all spiders spin silk?

A

Yes

94
Q

Do all spiders make webs?

A

No, some do not make webs

95
Q

Spinnerets

A

Spin silk

96
Q

What is spider silk made of?

A

Protein
Extremely strong

97
Q

How strong is spider silk?

A

5stronger than steel
2strong as Kelvar(@ same weight)

98
Q

How stretchy is spider silk?

A

Stretches 30% longer than original length
Very resilient

99
Q

What animal is specifically genetically altered to produce spider silk in their milk?

A

Goat

100
Q

Silk the diameter of a pencil can lift what?

A

A 747

101
Q

What happens when spider web dries out after a few days?

A

No longer stickey
Spider eats and recycles the old web

zoologu (10 decks)

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