Protostomes

Question 1

Two major groups of protostomes

Answer 1

Lophotrochozoa, Ecdysozoa

Question 2

Four major groups of Lophotrochozoa

Answer 2

Platyhelminthes, Annelida, Rotifera, Mollusca

Question 3

Key traits of Lophotrochozoa

Answer 3

having lophophore

Question 4

Key traits of Rotifera

Answer 4

pseduocoelom, parthenogenesis, crown of cilia, no T/L

Question 5

3 sub groups of platyhelminthes?

Answer 5

Flatworms, planarians, tapeworms

Question 6

3 type of flatworms?

Answer 6

TCT– turbellaria, cestoda, trematoda

Question 7

key traits of platyhelminthes?

Answer 7

flat and broad, sac body plan, no T/L, often parasitic, acoelomates

Question 8

Two subgroups of annelida?

Answer 8

Errantians, Sedentarians

Question 9

Key traits of annelida?

Answer 9

segmented worms/bodies, coelomates, have setae, hermaphrodites, closed circulation, trocophore larva

Question 10

key traits of errantians?

Answer 10

more motile, have parapodia and lots of setae, have jaws and sensory organs for predation, most are polychaetes

Question 11

key traits of sedentarians?

Answer 11

tend to be loss mobile, tube dwellers, oligochaetes(not many setae), example are leeches and earthworms

Question 12

facts about leeches?

Answer 12

aquatic and terrestrial, predatory/parasitic, secrete hirudin

Question 13

facts about earthworms?

Answer 13

alimentary canal, good for soil, hermaphrodites

Question 14

4 sub groups of mollusca?

Answer 14

Bivalvia, gastropoda, cephalopoda, polyplachophora

Question 15

key traits of mollusca?

Answer 15

most diverse lophos, trochophore, aquatic/terrestrial, soft bodies with reduced coelom, have foot/mantle/visceral mass and some have radula

Question 16

characters of polyplacophora?

Answer 16

8 calcium carbonate plates, unsegmented, muscular foot and radula, live in intertidal areas, sexual reproduction via internal fertilization, trochophore

Question 17

characters of gastropoda?

Answer 17

only mollusc that can be terrestrial, most have spiral shell, embryonic torsion, large foot, dioecious and some herm and parth

Question 18

characters of bivalvia?

Answer 18

all aquatic, hinged shell held by adductor muscles, no head or radula, suspension feeders, sexual external, two larval stages(trochophore, veliger)

Question 19

characters of nematoda?

Answer 19

roundworms, unsegmented, no appendages, pseudocoelom, cuticle, longitudinal muscles, no circulatory system, free living or parasitic

Question 20

two major groups of ecdysozoa?

Answer 20

nematoda, arthropoda

Question 21

body plan of arthropoda?

Answer 21

segmented, paired jointes appendages, chitin exoskeleton, cuticle(head and trunk too)

Question 22

What type of circulatory system do arthropoda have?

Answer 22

open circulatory system

Question 23

type of body cavity for arthropoda?

Answer 23

reduced coelom– hemocoel

Question 24

arthropod lineages?

Answer 24

chelicerata, myriapoda, pancrustacea–(includes hexapoda)

Question 25

two groupings of myriapoda?

Answer 25

diplomada(millipedes) and chilopoda(centipedes)

Question 26

diplopoda and chilopoda difference?

Answer 26

diplopoda arte detritovores and herbivores, chilopoda are predators

Question 27

myriapoda characteristics?

Answer 27

pair of antennae and three pairs of appendages modified as mouth parts, jaw like mandibles, dioecious , internal fertilization

Question 28

Pancrustacea sub groups?

Answer 28

crustaceans and hexapoda(insects)

Question 29

crustacean examples?

Answer 29

crab, lobster, shrimp, barnacles etc.

Question 30

key traits of crustaceans?

Answer 30

two pairs of antennae, specialized appendages, legs from thorax

Question 31

groups of crustaceans?

Answer 31

isopods, barnacles, copepods, decapods

Question 32

hexapoda distinguishing feature?

Answer 32

wings, can fly

Question 33

hexapoda reproduction?

Answer 33

sexual, dioecious, internal, some can be parthenogens

Question 34

hexapoda undergo what..?

Answer 34

metamorphosis

Question 35

hexapoda body?

Answer 35

head, thorax, abdomen, compound or simple eyes and six legs, four mouth part appendages, one antenna pair

Question 36

Chelicerata groupings?

Answer 36

AXE, arachnids, xiphosurids/pyncgonids, eurypterids

Question 37

chelicerta key body features?

Answer 37

no antennae, SIMPLE eyes, cephalothorax and abdomen

Question 38

type of arachnids?

Answer 38

spiders, scorpions, ticks, mites, harvestmen(opiliones)

Question 39

arachnid anatomy – key features

Answer 39

four pairs of walking legs, book lungs, pedipalps