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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
Fertilized eggs
Diploid
26
An increase of reproduction rates results from?
Parthenogenesis in arthropods
27
Exoskeletons in arthropods are?
Heavy and cannot grow
28
Molt
Shed their exoskeleton
29
Why do arthropods molt?
In order to grow
30
How often do arthropods molt?
4-7 times
31
Arthropods are very vulnerable when?
When they are molting
32
Tagmata
Body section
33
Arthropods have what three body sections?
Head Thorax Abdomen
34
Arthropods with two tagmata are…
Abdomen and cephalothorax
35
Cephalothorax
Fused head and throat
36
How many types of respiratory structures do arthropods have?
3 types
37
What are the three types of respiratory systems?
Gills Tracheal tubes Spiracles
38
Gills
Found in aquatic species
39
Tracheal tubes
Found in insects Hallow air passageways
40
Spiracles
Openings that allows air to enter or leave
41
Book lungs
Air-filled chambers with leaflike plates Some diffuse air directly through the body
42
What type of gas exchange is found in spiders?
Book lungs
43
Reproduction of arthropods are usually?
Dioecious(separate sexes)
44
Oviparous
Females lay eggs, no embryonic development in mother
45
Ovoviviparous
Embryos developed within egg in female
46
Metamorphosis
Change in structure/form during development
47
Complete
Egg, larva, pupa, adult
48
Incomplete
Egg, nymph, adult
49
Metamorphosis decreases competition for?
Food and space
50
Chelicerata
Arachnids
51
Crustacea
Crustaceans
52
Hexapoda
Insects and springtails
53
Myriapoda
Millipedes and centipedes
54
Trilobitomorpha
Trilobites[ went extinct more than 250 million years ago]
55
Class crustaceans
Mostly aquatic and have gills
56
Head of crustaceans
2 pair antennae
57
On the head of crustaceans how many pairs of mandible?
1 pair
58
Mandible
Chewing mouthparts that open sideways
59
In crustaceans how many pairs of maxillae on head?
2 pairs
60
What kind of eyes do crustaceans have?
All have 2 compound eyes usually on movable stalks
61
Some Crustaceans have how many pairs of walking legs?
5 pairs
62
What is the only land crustacean?
Pill bugs
63
Somite
A subsection on the thorax and abdomen
64
Crustaceans have how many pairs of appendages per somite?
One pair
65
Biramous
2 branches
66
In crustaceans all appendages except what are biramous?
All but the first antennae
67
Carapace
Dorsal section of the exoskeleton
68
Crustaceans are what kind of feeder?
Suspension Predator Scavenger
69
Examples of crustaceans
Crabs Lobster Shrimp Crayfish Barnacles Water fleas(daphnia) Pill bugs
70
Arachnid examples
Spiders Scorpions Mites-largest group Ticks
71
What are the three dangerous spider species in North America
Brown recluse Black widow Hubo
72
Brazilian wandering spider
Most venomous spider Death from muscle shock
73
Indian red scorpion
Most venomous pulmonary edema Death
74
Where are the deadly spiders and scorpions found typically?
Every habitat Greatest size and diversity in tropical regions and arid regions
75
Arachnids have how many jointed appendages?
6 pairs jointed appendages
76
Arachnids have how many pairs of walking legs?
4 pairs of walking legs
77
Arachnids have how many mouth pairs
78
Arachnids have how many tagmata?
2
79
Anterior arachnids
Cephalothorax
80
Arachnids cephalothorax
Sense organs, mouthparts No antennae, 6 pairs of legs
81
Arachnids second pair= grab prey, assist in reproduction, large in male
Pedipalps
82
Arachnids 3rd to 6th
Walking legs
83
Posterior
Abdomen
84
Abdomen
Genital opening Book lungs
85
Book lungs
Respiration
86
Arachnids are solitary except
When mating
87
Arachnids can display
Complex behavior patterns
88
Spiders= oviparous
Females may guard eggs/young (hatch- born live)
89
Scorpions =ovoviviparous or viviparous
Live birth of young=no eggs laid
90
Do arachnids have an alimentary canal?
Yes
91
Ticks and mites tagmata?
Single fused body section
92
Scorpions
Many abdominal sections Large pincers Venomous stinger on tail
93
Do all spiders spin silk?
Yes
94
Do all spiders make webs?
No, some do not make webs
95
Spinnerets
Spin silk
96
What is spider silk made of?
Protein Extremely strong
97
How strong is spider silk?
5*stronger than steel 2*strong as Kelvar(@ same weight)
98
How stretchy is spider silk?
Stretches 30% longer than original length Very resilient
99
What animal is specifically genetically altered to produce spider silk in their milk?
Goat
100
Silk the diameter of a pencil can lift what?
A 747
101
What happens when spider web dries out after a few days?
No longer stickey Spider eats and recycles the old web

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