exam 3

Question 1

phylum mollusca, class cephalopoda: the shell has a nautiloid with what?

Answer 1

gas chambers

Question 2

phylum mollusca, class cephalopoda: squid have a thin strip called what, enclosed in mantle?

Answer 2

pen

Question 3

phylum mollusca, class cephalopoda: swim by expelling water through a funnel siphon, control direction & speed

Answer 3

locomotion

Question 4

phylum mollusca, class cephalopoda: 1 pair of gills, branchial hearts

Answer 4

respiratory & circulatory systems

Question 5

phylum mollusca, class cephalopoda:
brain is largest of any invertebrate, eye similar to mammals

Answer 5

nervous/sensory systems

Question 6

why has cephalopod intelligence not evolved?

Answer 6

die after reproduction

Question 7

why do cephalopods have intelligence?

Answer 7

communication

Question 8

phylum mollusca, class cephalopoda:
what are cells in the skin that contain pigment granules?

Answer 8

chromatophores

Question 9

phylum mollusca, class cephalopoda: empties into rectum, used when alarmed

Answer 9

ink sac/gland

Question 10

phylum mollusca, class cephalopoda (reproduction): modified male arm that transfers into the female

Answer 10

hectocotylus

Question 11

phylum mollusca, class cephalopoda: in reproduction, males store sperm, packaged in

Answer 11

spermatophores

Question 12

mollusca: in subclass nautiloida, tentacles lack

Answer 12

suckers

Question 13

molluscs: in subclass coleoidea octopods lack

Answer 13

tentacles

Question 14

molluscs: in subclass coleoidea cuttlefish and squid have __ arms and __ tentacles

Answer 14

8 arms, 2 tentacles

Question 15

clade ecdysozoa: molted by ____ using hormone ____

Answer 15

ecdysis; ecdysone

Question 16

clade ecdysozoa phylum nematoda: these model for studies of genomics and cell development

Answer 16

Caenorhabdites elegans

Question 17

clade ecdysozoa phylum nematoda: this is a set number of cells; can determine cell trait

Answer 17

eutely

Question 18

clade ecdysozoa phylum nematoda: sensory organs on the head

Answer 18

amphids

Question 19

clade ecdysozoa phylum nematoda: males have ____ which holds female vulva open

Answer 19

spicules

Question 20

clade ecdysozoa phylum nematoda: an infection that contacts skin through soil

Answer 20

Necator americanus

Question 21

clade ecdysozoa phylum nematoda: river blindness is caused by what bacteria?

Answer 21

Wolbachia

Question 22

phylum onychoplora: tracheal system has what open to outside

Answer 22

spiracles

Question 23

phylum tardigrada: the sucking mouth has 2 what that pierce integument of nematodes?

Answer 23

stylets

Question 24

phylum tardigrada: what has a hydrostatic skeleton?

Answer 24

water bears

Question 25

phylum tardigrada: water bears can suspend metabolism to survive harsh conditions, this is known as?

Answer 25

cryptobiosis

Question 26

phylum tardigrada: in reproduction there may be an absence of males, what is this?

Answer 26

parthenogenesis

Question 27

phylum onychoplora have what?

Answer 27

1 pair antennae and soft cuticle

Question 28

success in arthropods includes?

Answer 28

•exoskeleton •segmentation & jointed appendages •air pumped directly to cells •sensory organs •complex behavior patterns •metamorphosis

Question 29

in arthropods, what are characteristics of the exoskeleton

Answer 29

•cuticle •lightweight & flexible •protection against drying •ecdysis •restricts final size

Question 30

in arthropoda, somites fused into specialized groups are

Answer 30

tagmata

Question 31

in arthropoda, appendages specialize in what?

Answer 31

sensing, food handling, walking, swimming, & digging

Question 32

in arthropoda, air is pumped directly into cells, how do terrestrial vs. aquatic arthropods respirate?

Answer 32

terrestrial: tracheal system aquatic: gills

Question 33

in arthropoda, sensory organs have what capabilities?

Answer 33

•eyes: simple or compound •touch, smell, hearing, balancing, & chemical reception

Question 34

arthropods have different larval & adult stages, as well as occupying different habitats and eating different food, what is this known as?

Answer 34

metamorphosis

Question 35

subphylum chelicerata, subclass eurypterida: the abdomen has __ segments which are spike-like ____

Answer 35

12 segments; telson

Question 36

subphylum chelicerata, subclass xiphosurida: the abdomen has __ pairs of broad, thin, appendages

Answer 36

6

Question 37

arachnids have two tagmata:

Answer 37

cephalothorax & abdomen

Question 38

order araneae (spiders): cephalothorax and abdomen joined by what?

Answer 38

pedicel

Question 39

order scorpionida: preabdomen has __ segments and post abdomen has long, slender tail of __ segments that ends in a stinger

Answer 39

pre-abdomen: 7 segments post-abdomen: 5 segments

Question 40

order opiliones (daddy long legs): abdomen and cephalothorax lack what?

Answer 40

pedicel

Question 41

subphylum trilobita: fusion of segments (head) antennae, compound eyes, a mouth, jointed appendages

Answer 41

cephalon

Question 42

subphylum trilobita: fused into a plate

Answer 42

pygidium

Question 43

subphylum chelicerata has six paired appendages including:

Answer 43

chelicerae, pedipalps, and 4 pairs of legs

Question 44

subclass xiphosurida has what on some abdominal appendages?

Answer 44

book gills

Question 45

subclass xiphosurida carapace has ____ & ____ eyes

Answer 45

2 compound and 2 simple

Question 46

class merostomata has no hemoglobin meaning what?

Answer 46

blue blood

Question 47

class pycnogonida (sea spiders): some males have a pair of legs called what that carry developing eggs?

Answer 47

ovigers

Question 48

how many pairs of legs do sea spiders have?

Answer 48

4 pairs (some 5-6)

Question 49

in spiders, what provides sensory functions and reproduction?

Answer 49

pedipalps

Question 50

order araneae: parallel air pockets extend into a blood-filled chamber?

Answer 50

book gills

Question 51

how many pairs of spinnerets do spiders have?

Answer 51

2-3

Question 52

in spiders, males store sperm in what?

Answer 52

pedipalps

Question 53

scorpions can be oviviparous or viviparous, what does this mean?

Answer 53

can produce 6 to 90 young

Question 54

order solpugida (camel spiders): shred their prey with large

Answer 54

chelicerae

Question 55

order opiliones (daddy long legs): chelicerae are like

Answer 55

pinchers

Question 56

in order acari (ticks and mites) ___ pierce, tear, or grip food

Answer 56

chelicerae

Question 57

in ticks and mites the cephalothorax and abdomen are

Answer 57

fused

Question 58

subphylum crustacea have how many pairs of antenna

Answer 58

2

Question 59

subphylum crustacea have how many mandibles?

Answer 59

1 pair

Question 60

subphylum crustacea have how many maxillae?

Answer 60

2 pairs

Question 61

basal crustaceans can have up to __ segments

Answer 61

60

Question 62

crustaceans tagmata consists of

Answer 62

head, thorax, abdomen

Question 63

crustacea: nonsegmented anterior end

Answer 63

rostrum

Question 64

crustacea: dorsal covering

Answer 64

carapace

Question 65

crustaceans head have __ fused segments, thorax have __, and abdomen have __

Answer 65

head: 5 thorax: 8 abdomen: 6

Question 66

crustacea appendages consist of a basal _____, a lateral _____, and a medial _____

Answer 66

basal protopod, lateral exopod, medial endopod

Question 67

crustaceans compound eyes are made of many units called what?

Answer 67

ommatidia

Question 68

crustaceans nauplius consists of a _____ 1st antennae, _____ 2nd antennae, and _____ for swimming

Answer 68

uniramous 1st antennae, biramous 2nd antennae, and mandibles for swimming

Question 69

nauplius larva are unlike adults and undergo what

Answer 69

metamorphosis

Question 70

crustaceans telson is the last abdominal so it’s and uropods are what?

Answer 70

the tail