Lab 6: Arthropoda 1

Question 1

when did subphylum tribolita go extinct

Answer 1

Permian

Question 2

3 longitudinal sections of Trilobites dorsal shield

Answer 2

axial lobe and 2 lateral ones

Question 3

three transverse parts of Trilobites shields

Answer 3

• cephalon
• thorax
• pygidium

Question 4

what type of appendages do Trilobites have

Answer 4

biramous (2-branched)

Question 5

do chelicerates have antennae?

Answer 5

no

Question 6

what two types of appendages are specific to the chelicerata

Answer 6

• pedipalps

- chelicerae

Question 7

two body regions of chelicerates

Answer 7

• cephalothorax (prosoma)

- abdomen (opisthoma)

Question 8

eurypterida lasted from the ? to the ? period

Answer 8

Ordovician, Permian

Question 9

how many eyes on a xyphosura and how many are visible

Answer 9

9, 2

Question 10

xyphosura telson is like a

Answer 10

tail

Question 11

pycnogonida are sea

Answer 11

“spiders”

Question 12

pycnogonida mouth location

Answer 12

on the proboscis

Question 13

carapace

Answer 13

prosoma covering on an arachnid

Question 14

arachnida eye type

Answer 14

simple

Question 15

what are the claws in order scorpiones

Answer 15

pedipalps

Question 16

pectines

Answer 16

comb-like structures on the ventral side of a scorpion posterior to the legs

Question 17

pectines funct

Answer 17

detect ground vibrations prod by prey

Question 18

what are aranea (spider) fangs

Answer 18

chelicerae

Question 19

pedicel

Answer 19

stalk like structure connecting the prosoma and opisthosoma

Question 20

how do male spiders transfer sperm

Answer 20

pedipalps

Question 21

what do spiders use to draw their liquid food in

Answer 21

pumping stomach

Question 22

what is the name for an acari head

Answer 22

gnathosoma

Question 23

what bears the legs on an acari

Answer 23

idiosoma

Question 24

acari resp

Answer 24

tracheal resp system

Question 25

pseudoscorpiones differences (3)

Answer 25

- small - broad opisthosoma - lack a sting(er)

Question 26

2 diffs btwn a harvestman and a spider

Answer 26

- no pedicel btwn the prosoma and the opisthosoma | - extremely long legs that carry body high above substrate

Question 27

how do harvestmen deter predators

Answer 27

repugnatorial glands

Question 28

solpugida/solifuges defining characteristics (2)

Answer 28

- huge forward pointing chelicerae like jaws | - leg like pedipalps with suckers

Question 29

myriapoda incl

Answer 29

millipedes and centipedes

Question 30

chilopods have appendages on the first trunk segment called

Answer 30

poison fangs

Question 31

centipede legs (2)

Answer 31

- splayed out | - one per segment

Question 32

millipede legs

Answer 32

2 per segmet

Question 33

gnathochilarium

Answer 33

a part of a millipede on its head

Question 34

millipede exoskeleton material

Answer 34

CaCO3

Question 35

2 smelly substances of diplopoda

Answer 35

- repugnant substances to scare away predators | - noxious vapours

Question 36

ametabolous metamorphosis

Answer 36

immature instars differ from the adults only in size and development of the gonads and external genitalia

Question 37

hemimetabolous meta

Answer 37

young nymphs that lack gonads, external genitalia, and wings

Question 38

holometabolous meta

Answer 38

immature instars completely different than the adults (larvae -> pupa -> adult)

Question 39

what are mandibulate mouthparts in hexapods for

Answer 39

chewing solid matter

Question 40

haustellate mouthparts funct

Answer 40

sucking

Question 41

fat body in an orthopteran

Answer 41

white-coloured blobs floating inside the haemocoel

Question 42

elytra

Answer 42

protective structures adapted from forewings in beetles

Question 43

what type of development do beetles and lepidopterans have

Answer 43

holometabolous

Question 44

what do lepidopterans feed with

Answer 44

rolled up proboscis

Question 45

flies have how many wings

Answer 45

2

Question 46

what is the second set of wings in flies replaced with

Answer 46

halteres, counterweights

Question 47

what type of development do orthoperta and odonata and true bugs have?

Answer 47

hemimetabolous

Question 48

what type of development do silverfish have

Answer 48

ametabolous