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Biology > Phylum Arthropoda > Flashcards

Phylum Arthropoda Flashcards

1
Q

Phylum Arthropoda is divided into 5 subphyla. What are they

A

Trilobitomorpha, Cheliceriformes, Myriapoda, Hexapoda, Crustacea

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2
Q

What is unique about the appendages of members of arthropoda?

A

they are the first up to this point to be jointed

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3
Q

The outermost layer of most arthropods is called _______ and is made of _______

A

exoskeleton made of chitin

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4
Q

What else uses chitin in their structural formations?

A

Fungi

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5
Q

exoskeletons allow for ___________

A

the attachment of muscles

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6
Q

In order to grow, arthropods must _____

A

molt their exoskeletons

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7
Q

What is unique about how arthropods are segmented?

A

they have fused segments

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8
Q

What kind of circulatory system do most arthropods have?

A

The Coelom is reduced into the Hemocoel which contains the Hemolymph.

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9
Q

What is Hemolymph?

A

a mix of blood and interstitial fluid.

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10
Q

What do aquatic arthropods use for excretion?

A

green glands

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11
Q

What do terrestrial arthropods use for excretion?

A

Malpighian tubules

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12
Q

What is unique about fertilization in arthropods that has not been seen up to this point.

A

Internal fertilization (this implies separate sexes)

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13
Q

are arthropods under lophotrochozoa?

A

no

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14
Q

arthropods have ___ germ layers. what does this imply?

A
  1. it implies that they have a tube in tube body, and have bilateral symmetry
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15
Q

are arthropods proto- or deuterostome?

A

protostome

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16
Q

being protostome implies that the embryo undergoes ______ or “________” cleavage.

A

spiral or determinate cleavage

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17
Q

what is indicated by the cephalization found in arthropods

A

well developed sensory organs

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18
Q

what do aquatic arthropods uses for respiration?

A

Gills

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19
Q

what do terrestrial arthropods uses for respiration?

A

most have internal systems (e.g. tracheas in insects)

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20
Q

What is the common name of subphylum trilobitomorpha

A

Trilobite

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21
Q

Where are trilobites found?

A

nowhere, they are extinct

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22
Q

Subphylum Cheliceriformes includes _______

A

horseshoe crabs, arachnids, sea spiders, ticks

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23
Q

What classes are Cheliceriformes divided into? what do those classes include

A

Class Merostomata (horseshoe crabs), Class Pycnogonida (Sea Spiders), And Class Arachnida (spiders, ticks, mites, harvestmen, & scorpions)

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24
Q

What is the defining characteristic of subphylum Cheliceriformes?

A

6 pairs of appendages

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25
Q

how are the 6 paired appendages unique to Chelicerformes arranged?

A

1st pair = chelicerae,
2nd pair = pedipaps
4 remaining pairs = walking legs

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26
Q

what are chelicerae? their function?

A

the 1st pair of appendages on a Chelicerforme. used for prey capture

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27
Q

what are Pedipalps?

A

2nd pair of appendages on a Chelicerforme

28
Q

What do Chelicerformes use for chemo-sensing, maiting, and feeding?

A

pedipalps. (2nd pair)

29
Q

Arachnids belong to what subphyla?

A

Chelicerforme

30
Q

horseshoe crabs are referred to as _______ and are in what class?

A

Living fossils, Class Merostomata

31
Q

sea spiders are included in what class under what phylum?

A

Class Pycnogoda, Phylum Arthropoda.

32
Q

describe the appearance of a member of class pycnogonida

A

look like anorexic spiders

33
Q

what classes are included in subphylum myriapoda

A

Class Chilopoda (centipedes) and Class Diplopoda (millipedes)

34
Q

What class of Myriapoda has a poison claw on its first segment?

A

Class Chilopoda

35
Q

Members of Subphylum Myriapoda have 1 pairs of _______ , 3 pairs of ________ modified as mouth parts including _________

A

antennae, appendages, jaw-like mandibles

36
Q

All members of Myriapoda are found in _______ habitats

A

Terrestrial

37
Q

what class of Myriapoda are carnivorous?

A

Class Chilopods (Centipedes)

38
Q

What class of Myriapoda are Herbivores?

A

Class Diplopoda (Millipedes)

39
Q

How can you distinguish between a Chilopod and a Diplopod?

A

Chilopods have 1 pair of legs per segment, Diplopods have 2.

40
Q

What Classes does Subphylum Hexapoda include?

A

Only 1: Class Insecta

41
Q

How are Hexapods segmented?

A

Head, thorax, & abdomen.

42
Q

what are defining characteristics of Hexapoda?

A
  1. Mouthparts for chewing, sucking, or lapping,
  2. 3 pairs of legs and usually 2 pairs of wings on thorax
  3. 3 body segments.
43
Q

Class insecta are found in ____ habitiats

A

all, but are rare in the sea

44
Q

How many antennae do insects have?

A

1

45
Q

Insects have _______ eyes. What other class has these?

A

Compound. Chilopods and Dilopods

46
Q

where are the legs and wings attached on class insecta?

A

thorax

47
Q

respiration method of insects?

A

tracheal system

48
Q

in insects excretion via _______

A

Malpighian tubules

49
Q

Describe incomplete or gradual metamorphosis.

A

Egg -> Nymph -> Adult (Grasshopper)

50
Q

Describe Complete Metamorphosis

A

Egg -> Larva -> Pupa -> Adult (butterfly)

51
Q

what is a pupa?

A

A cocoon

52
Q

What is included in subphylum Crustacea

A

Crabs, Lobsters, Shrimp, Sow bugs, Krill, Barnacles, crayfish, and daphnia

53
Q

Crustaceans have ____ body parts

A

2 or 3

54
Q

crustaceans are the only arthropods with ___ pairs of antennae

A

2

55
Q

How many legs do crustaceans have?

A

3 or more

56
Q

Crustaceans are found in ______ habitats

A

marine and freshwater

57
Q

insects have appendages on their ______ but crustaceans have appendages on their _______

A

Thorax, Abdomen

58
Q

Crustaceans can be divided into 2 groups: _______ and ______

A

Isopods and Decapods

59
Q

What are Isopods?

A

A large group of Marine, freshwater and terrestrial crustaceans that use their feet for gas exchange.

60
Q

What group of crustaceans do pill bugs and wood lice belong to?

A

Terrestrial Isopods

61
Q

What are decapods?

A

A group of large crustaceans that use gills for gas exchange.

62
Q

decapods include:

A

lobsters, crayfish, crabs and shrimp

63
Q

Lobsters and crayfish have ____ pairs of appendages

A

19 pairs

64
Q

decapods have _______ cuticles

A

Calcium Carbonate (like sponges, molluscs, and corals)

65
Q

Planktonic crustaceans are in the _______ group

A

Copepod

Biology (15 decks)

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