ARTHROPODA Flashcards

1
Q

Subphylum and Class?
brine shrimp

A

Subphylum Crustacea
Class Branchiopoda

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2
Q

Subphylum and Class?
copepods

A

Subphylum Crustacea
Class Copepoda

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3
Q

Subphylum and Class?
barnacles

A

Subphylum Crustacea
Class Thecostraca

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4
Q

Subphylum, Class, Order?
crabs, lobsters, shrimp

A

Subphylum Crustacea
Class Malacostraca
Order Decapoda

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5
Q

Subphylum, Class, Order?
isopods

A

Subphylum Crustacea
Class Malacostraca
Order Isopoda

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6
Q

Subphylum, Class, Order?
amphipods

A

Subphylum Crustacea
Class Malacostraca
Order Amphipoda

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7
Q

Subphylum, Class, Order?
krill

A

Subphylum Crustacea
Class Malacostraca
Order Euphausiacea

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8
Q

Subphylum, Class, Order?
dragonflies

A

Subphylum Hexapoda
Class Insecta
Order Odonata

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9
Q

Subphylum, Class, Order?
flies, mosquitos

A

Subphylum Hexapoda
Class Insecta
Order Diptera

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10
Q

Subphylum, Class, Order?
beetles

A

Subphylum Hexapoda
Class Insecta
Order Coleoptera

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11
Q

Subphylum, Class, Order?
butterflies, moths

A

Subphylum Hexapoda
Class Insecta
Order Lepidoptera

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12
Q

Subphylum, Class, Order?
bees, ants, wasps

A

Subphylum Hexapoda
Class Insecta
Order Hymenoptera

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13
Q

Subphylum and Class?
centipedes

A

Subphylum Myriapoda
Class Chilapoda

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14
Q

Subphylum and Class?
millipedes

A

Subphylum Myriapoda
Class Diplopoda

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15
Q

Subphylum, Class, Subclass?
Horseshoe crab

A

Subphylum Chelicerata
Class Euchelicerata
Subclass Merostomata

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16
Q

Subphylum, Class, Subclass?
spiders, scorpions, mites, ticks

A

Subphylum Chelicerata
Class Euchelicerata
Subclass Arachnida

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17
Q

Subphylum and Class?
sea spiders

A

Subphylum Chelicerata
Class Pycnogonida

18
Q

Diploblastic or triploblastic?

A

Triploblastic

19
Q

Synapomorphies?

A

Hard exoskeleton
Specialization of appendages
Jointed appendages

20
Q

Explain the cuticle

A

Secreted by epidermis
Waxes, lipoproteins, proteins.
Sclerotized - tanning process that hardens

21
Q

What are the antagonistic muscles?

A

flexors and extensors

22
Q

key difference between millipedes and centipedes?

A

millipedes have 2 legs per segment and are slow but powerful
centipedes have one leg per segment and are fast but not powerful

23
Q

How do arthropods swim?

A

Flapping phyllopodia
Tail flexion

24
Q

How do arthropods fly?

A

Dipterans (flies):
Indirect flight muscles allow wings to beat faster than neural transmission.
Dorsoventral and longitudinal muscles.
Flexible thorax.

25
Q

define Instars

A

tissue growth but no increase in external size.

26
Q

define Proecdysis

A

old endocuticle digested by enzymes from epidermis. Begin secreting new endocuticle.

27
Q

Define Ecdysis

A

old cuticle splits and animal wiggles out. Body swells.

28
Q

Define Postecdysis

A

cuticle hardens.

29
Q

Define Hemimetabolous insects

A

Insects hatch looking much like adults. Nymphs gradually attain adult form.

30
Q

Define Holometabolous insects

A

Young very different from
adults. Pupal stage metamorhosis into adult.

31
Q

Complete or incomplete gut?

A

Complete gut with regional specialization

32
Q

Function of foregut?

A

food intake, transport, storage, mechanical digestion
(jaws, pharynx, gizzard).

33
Q

Function of midgut?

A

Extracellular digestion, nutrient uptake (cecae, digestive gland, hepatopancreas).

34
Q

Function of hindgut?

A

Excretion of undigested
material, water reabsorption.

35
Q

Do they have a heart?

A

Muscular heart required since body movements can’t move blood.

36
Q

Open or closed circ system?

A

Open hemocoel as a result of hard exoskeleton and lack of internal segmentation.

37
Q

Respiratory structure of terrestrial insects?

A

Trachea

38
Q

Respiratory structure of aquatic animals?

A

gills

39
Q

Respiratory structure of arachnids?

A

book lung

40
Q

Gonochoristic or hermaphroditic?

A

Most gonochoristic with formal mating and internal fertilization

41
Q

What type of development?

A

Development often mixed with early brooding then larval stages

42
Q

What type of larva?

A

Nauplius larva