26 -chelicerata

Question 1

Hexapoda

Answer 1

springtails, insects
mostly marine

Question 2

subphylum Chelicerata

Answer 2

part of anthropoda

Question 3

Chelicerata habitat

Answer 3

mostly terrestrial some freshwater
and marine arthropods

Question 4

what do Chelicerata lack

Answer 4

antennae and do not have
mandibles

Question 5

what do Chelicerata have instead of antennae and mandibles

Answer 5

chelicerae or chelifores

Question 6

tagmatization most Chelicerata

Answer 6

cephalothorax & abdomen

Question 7

Pycnogonida

Answer 7

sea spiders
sister to the clade euchelicerata(other chelicerates)

Question 8

Xiphosura

Answer 8

in the clade Euchelicerata

Question 9

relationships among chelicerates are

Answer 9

poorly resolved

Question 10

Class Pycnogonida habiitat

Answer 10

entirely marine

Question 11

how is Pycnogonida tagmatization unique

Answer 11

have cephalon with ovigers
a trunk w 3-6 pairs of legs
abdomen reduced to tiny stub

Question 12

eyes Pycnogonida

Answer 12

four simple eyes

Question 13

ovigers Pycnogonida

Answer 13

additional appendages on walking legs

Question 14

cephalon

Answer 14

head stem, has proboscis

Question 15

Pycnogonida where are gonads and gut branches

Answer 15

inside the legs

Question 16

what is the opening of the mouth at the end of
the proboscis

Answer 16

trilobed(triangle thing) with sclerotized cuticular
ridges

Question 17

what are the chelate appendages next to proboscis Pycnogonida

Answer 17

chelifores

Question 18

chelifores homologous to

Answer 18

chelicerae

Question 19

pycnogonids sexes

Answer 19

separate

Question 20

pycnogonids fertilization

Answer 20

external

Question 21

what happens after fertilization Pycnogonida

Answer 21

male gathers the fertilized eggs, holds onto them using his ovigers until larvae hatch

Question 22

Pycnogonida
what type of parental care

Answer 22

male

Question 23

larva Pycnogonida

Answer 23

protonymphon
has 3 pairs of appendages

Question 24

how do protonymphon grow

Answer 24

anamorphic development
legs are added b/w moults

Question 25

Euchelicerata mouthparts

Answer 25

chelicerae

Question 26

ancestral chelicerae

Answer 26

3-segmented pincers

Question 27

what are chelicerae reduced to in some taxa

Answer 27

2 segments

Question 28

how do chelicerae and mandibles start out as evolutionarily

Answer 28

legs

Question 29

Mandibulata chelicerae and mandibles evolution

Answer 29

only the leg base (coxa) was retained

Question 30

Chelicerata chelicerae and mandibles evolution

Answer 30

tip of leg were retained last articles become the movable digit

Question 31

Euchelicerata tagmatization

Answer 31

cephalothorax abdomen- variable in segments

Question 32

cephalothorax contains

Answer 32

-4 pairs of legs -chelicerae, -pedipalps

Question 33

Subclass Merostomata includes

Answer 33

2 grps marine chelicerates Eurypterida Xiphosura

Question 34

Xiphosura

Answer 34

horseshoe crabs

Question 35

Eurypterida

Answer 35

sea scorpions extinct

Question 36

what were most massive arthropod

Answer 36

Eurypterida

Question 37

Eurypterida tagmata

Answer 37

three body tagmata cephalothorax mesosoma metasoma

Question 38

Xiphosura spp

Answer 38

4

Question 39

Xiphosura eyes

Answer 39

compound eyes

Question 40

Xiphosura body and limbs

Answer 40

-chelicerae, pedipalps -some walking legs are chelate -book gills

Question 41

what doo Xiphosura eat

Answer 41

swallow particles

Question 42

where are things crushed Xiphosura

Answer 42

gnathobases

Question 43

fertilization Xiphosura

Answer 43

external

Question 44

larvae Xiphosura

Answer 44

planktonic

Question 45

Subclass Arachnida

Answer 45

part of chelicerata

Question 46

Arachnida spp

Answer 46

112,000

Question 47

Arachnida what do they eat

Answer 47

fluid-feeding predators

Question 48

Arachnida eyes

Answer 48

simple eyes

Question 49

Order Scorpiones body

Answer 49

3-segmented chelicerae pincers comb like pectines sting

Question 50

whats obvious in Scorpiones segmentation

Answer 50

abdomen

Question 51

hoiw do scorpions eat

Answer 51

externally digest, drink fluid

Question 52

what do pectines do

Answer 52

sense vibrations

Question 53

what are the pedipalps modified as in scorpions

Answer 53

pincers

Question 54

young Scorpiones

Answer 54

carried on females back viviparity

Question 55

transfer sperm Scorpiones

Answer 55

indirectly

Question 56

what does merosoma have scorpions

Answer 56

book lungs

Question 57

Order Araneae

Answer 57

spiders

Question 58

Araneae spp

Answer 58

52 000

Question 59

body Araneae

Answer 59

-tight constriction between cephalothorax and abdomen -spinnerets abdomen unsegmented

Question 60

spinnerets

Answer 60

abdominal appendages for spinning silk

Question 61

how many chelicerae araneae

Answer 61

2-segmented chelicerae

Question 62

pedipalps Araneae

Answer 62

are never chelate

Question 63

gases exchange Araneae

Answer 63

tracheae and/or book lungs

Question 64

ocelli Araneae

Answer 64

image-forming in jumping spiders and wolf spiders

Question 65

Araneae what do they eat

Answer 65

fluid-feeding predators

Question 66

what is on fangs of chelicerae Araneae

Answer 66

venom glands

Question 67

silk usage Araneae

Answer 67

to capture prey or line burrows and wrap eggs

Question 68

sperm transfer Araneae

Answer 68

sperm sucked through pedipalp

Question 69

Araneae mating and relationships

Answer 69

often complex courtship maternal care of eggs, and sometimes young

Question 70

Acariformes & Parasitiformes

Answer 70

the mites, including ticks

Question 71

are Acariformes & Parasitiformes considered orderAcari

Answer 71

no, ‘mite-ness’ has evolved twice independently

Question 72

Acariformes & Parasitiformes body

Answer 72

-no clear cephalothorax or abdomen -almost no external evidence of abdominal segmentation -among the smallest of all animals

Question 73

how many chelicerae mites

Answer 73

2 or 3 segmented chelicerae

Question 74

where do mites live and eat

Answer 74

-do everything, live everywhere -most are fluid-feeders -many detritivores can ingest solid particles

Question 75

fertilization mites

Answer 75

internal

Question 76

sperm transfer mites

Answer 76

all imaginable modes of sperm transfer

Question 77

mites parental care

Answer 77

no/rarely idk it says seldome

Question 78

young mites lets

Answer 78

3 pairs of legs

Question 79

wack ass life-cycle in some mites

Answer 79

greatly shortened in some live until adults in mother

Question 80

crustaceans Ecological importance in ocean

Answer 80

-food for many aquatic vertebrates -commensals or parasites

Question 81

bottom-trawling

Answer 81

-destroys benthic habitat -75% bycatch, which is discarded

Question 82

collembolans importance

Answer 82

important detritivores

Question 83

insects importance

Answer 83

detritivores -food for many invertebrates and vertebrates -commercial farming of insects for protein pollination

Question 84

colony-collapse disorder

Answer 84

disaster

Question 85

Chelicerata importance

Answer 85

-venoms dangerous, explored for their potential pharmacological uses -biomimicry of spider silk -horseshoe crab blood

Question 86

horseshoe crab importance

Answer 86

haemolymph coagulates if bacteria present tests for contamination of vaccines and medical equipment

Question 87

economically important arachnids

Answer 87

crop pests biocontrol agents medically important

Question 88

medical importance arachnids

Answer 88

allergies and dermatitis vectors for viruses and bacteria

Question 89

Demodex mites

Answer 89

-two species -live in the pores and follicles of human facial skin