Phylum Anthropoda Flashcards

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1
Q

What is the largest phylum in animal kingdom

A

Anthropods

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2
Q
Largest phylum 
Bilateral symmetry
Jointed appendages
Sophisticated sense organs
Exoskeleton
A

Characteristics of crustaceans

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3
Q

What are Anthropods skeletons made of?

A

Chitin

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4
Q

Can be tough or soft and flexible
Relatively impermeable to water
Flexible enough in joints to allow movement

A

Anthropod skeletons

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5
Q

What are the exoskeleton drawbacks?

A

Relatively heavy and it doesn’t grow with the animal so the animal must molt

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6
Q

Ecdysis

A

Molting

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7
Q

What happens during Ecdysis?

A

When the exoskeleton is ready, the animal contracts muscles and takes in air and water.

Animal swells until old exoskeleton splits usually along back

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8
Q

What is Ecdysis controlled and initiated by?

A

Controlled by hormones produced in the head

Initiated by changes in the environment

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9
Q

What are the 3 sections of the crustacean?

A

Head
Thorax
Abdomen

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10
Q

Sometimes the head and thorax fuse to form

A

Cephalothorax

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11
Q

How many pairs of walking legs?

A

5

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12
Q

What are the shorter antennas called?

A

Antennules

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13
Q

Anthropods have extensive cephalization…

A

Compound eyes
Sophisticated brain
Antennae detect changes

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14
Q

How do Anthropods respirate

A

Gills, tracheal system, book gills

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15
Q

What does the Anthropod nervous system contain?

A

Double ventral nerve cord
Anterior brain
Ganglia (control center for body)

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16
Q

Anthropods have what kind of circulatory system?

A

Open

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17
Q

Body fluid is called

A

Hemolymph

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18
Q

Anthropods have complete digestive tract that includes

A

Mouth, stomach, intestine, anus, and mandible

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19
Q

Mandibles open from

A

Side to side

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20
Q

What is the reproductive system like in Anthropods?

A

They are dioecious, they have internal fertilization, ostracods and Branchiopoda reproduce by parthenogenesis (eggs develop without sperm)

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21
Q

Subphylum Crustacea includes

A

Crabs, lobsters, etc.

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22
Q

Marine, freshwater and terrestrial
Fused cephalothorax
2 pairs of antennae

A

Crustacea

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23
Q

What are the classes within Crustacea?

A

Maxillapoda

Malacostraca

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24
Q

Barnacles and Copepods

A

Maxillapoda

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25
Q

Crabs, lobster, shrimp, krill

A

Malacostraca

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26
Q

Have flexible body plan that allows them to live in all biomes.

A

Anthropods

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27
Q

What are Copepods

A

Microscopic planktonic organisms

Important part of food web

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28
Q

Sessile
Cause problems to ships by increasing drag
Filter feeders

A

Barnacles

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29
Q

Largest group of crustaceans
Usually 8 legs, first 2 used for feeding
2 chambered stomach

A

Malacostraca

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30
Q

Crabs lobster shrimp

A

Decapoda

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31
Q

5 pairs of walking legs

First pair is modified to form chelipeds which catch prey and defend animal

A

Decapoda

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32
Q

Shrimp like animals that are filter feeders and feed on zooplankton
Most species are bioluminescent

A

Krill

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33
Q

Scavengers
Found on bottoms
On land known as pill bugs
9 marine species

A

Order Isopoda

34
Q

Contains 2 segments (cephalothorax and abdomen)

A

Merostamata

35
Q

Contains only 4 species
Horseshoe crab more closely related to spiders than crabs
The blood is blue because it has cooper
Has enzyme which release a natural antibiotic to fight bacteria
Blood used to detect bacteria in medical supplies and drugs

A

Merostamata

36
Q

Sea spiders
Can’t spin webs
Contains 4-6 pairs of legs
1300 known species

A

Pycnogonida

37
Q

The process of fusion of the body regions in Anthropods

A

Tagmosis

38
Q

Class for horseshoe crab

A

Merostamata

39
Q

The most important order of crustaceans for human

A

Decapoda

40
Q

Which cell layer secretes the exoskeleton of crustaceans

A

Epidermis

41
Q

Which body region of lobster do humans eat

A

Abdomen

42
Q

What do you call the first pair of appendages on a horseshoe crab

A

Chelicerae

43
Q

Horseshoe crabs use this to turn themselves over and for defense

A

Telson

44
Q

Head and thorax fused

A

Cephalothorax

45
Q

To what body region are the legs of Decapoda attached

A

Thorax

46
Q

Fused specialized body regions in Arthropoda

A

Tagmata

47
Q

Which organisms feed with a large suctorial proboscis?

A

Sea spiders

48
Q

Molting process

A

Ecdysis

49
Q

Molting occurs most frequently during what life cycle?

A

Larval

50
Q

Horseshoe crab respiratory organs are called

A

Book gills

51
Q

The exoskeleton of crustaceans is composed of this material

A

Chitin

52
Q

Chambers filled with fluid and lined with sensitive hairs that help with balance and equilibrium

A

Statocysts

53
Q

Most female crustaceans brood their fertilized eggs on what body region?

A

Abdomen

54
Q

The hard outer cuticle which covers and protects the body of a decapod

A

Carapace

55
Q

What is the first larval form for most crustaceans called

A

Zoea

56
Q

The ability of crustaceans to release an injured appendage

A

Autonomy

57
Q

Structured with which barnacles feed

A

Cirri (legs)

58
Q

Larval stage of barnacle

A

Nauplius

59
Q

Excretory and osmotegulatory organs located on the head of the crayfish

A

Green glands

60
Q

Subclass of Copepods

A

Copepoda

61
Q

Subclass for barnacles

A

Cirripedia

62
Q

Which pair of mouth parts are jawed feet that situate and hold the food in front of the mouth

A

Maxillipeds

63
Q

This part of the crayfishes stomach has calcareous teeth which grind food particles

A

Gastric mill

64
Q

The most common type of reproductive strategy used by crustaceans

A

Sexual external fertilization

65
Q

This pair of mouth parts actually crush and grind the food so are involved in the actual ingestion

A

Mandibles

66
Q

The two types of barnacles are stalked and

A

Acorn

67
Q

Chelipeds are

A

Claws

68
Q

The abdominal appendages of lost crustaceans are used to carry eggs

A

True

69
Q

Which of these is also called a decorator crab

A

Spider crab

70
Q

The order in which the blue crab is found

A

Decapoda

71
Q

The only pelagic Decapoda

A

Shrimp

72
Q

When do shrimp typically migrate to the surface to feed

A

Evening and predawn

73
Q

Crustaceans consume their cast off exoskeleton much of the time for needed protein and calcium carbonate

A

False

74
Q

Barnacles are always sessile

A

False

75
Q

Has an oversized claw used for combat or courtship display

A

Fiddler crab

76
Q

All crabs are aquatic

A

False

77
Q

The most powerful and agile swimmers of all marine crustaceans

A

Blue crabs

78
Q

Inhabit abandoned Gastropoda shells

A

Hermit crabs

79
Q

Spiny lobster are protected from April to the end of July

A

True

80
Q

Used by farmers as livestock feed until it was discovered that it caused the meat to taste bad

A

Horseshoe crab