PHYLUM ANNELIDA

Question 1

what phylum are segmented worms

Answer 1

phylum annelida

Question 2

it includes earthworms, polycheate worms and leeches

Answer 2

phylum annelida

Question 3

are often called segmented worms due to their characteristi of metamerism or true segmentation which gives them a ringed appearance

Answer 3

annelida

Question 4

annelid are often called

Answer 4

segmented worms

Question 5

key characteristics of annelida

Answer 5

metamerism or true segmentation

Question 6

characteristic which gives them a ringed appearance

Answer 6

metamerism or true segmentation

Question 7

they share metamerism with arthropods and chordates

Answer 7

annelida

Question 8

annelida share the character of metamerism with —- and —–

Answer 8

arthropods and chordates

Question 9

annelida is derived from the Latin word

Answer 9

annellus

Question 10

it means small ring

Answer 10

annellus

Question 11

its phylum name is derived from the Latin word annellus

Answer 11

annellida

Question 12

they show parasitic and commensal symbioses with other species in their habitat

Answer 12

annellida

Question 13

annelida are found in ——, —–, —–, and —–

Answer 13

marine
terrestrial
freshwater
presence of water or humidity

Question 14

the presence of —– or —- is a critical factor for the survival of annelida

Answer 14

water or humidity

Question 15

annelids have a true —-

Answer 15

coelom

Question 16

a body cavity completely lined with mesoderm

Answer 16

true coelom

Question 17

gives the body wall and digestive system can move independently of each other, internal organs can become more complex and like their closed circulatory system

Answer 17

true coelom

Question 18

it can assist with respiration, circulation and excretion

Answer 18

coelomic fluid

Question 19

mollusks, annelids, and arthropods are all

Answer 19

protostomes

Question 20

protos means

Answer 20

first

Question 21

the embryonic opening is the

Answer 21

mouth

Question 22

echinoderms and chordates are

Answer 22

deuterostomes

Question 23

they have anus as their first opening and mouth being second —– meaning deutero

Answer 23

deuterostomes

Question 24

3 groups of annelida

Answer 24

polychaeta
oligochaeta
hirudinea

Question 25

the polychaetes

Answer 25

polychaeta

Question 26

the earthworms and their relatives

Answer 26

oligochaeta

Question 27

the leeches

Answer 27

hirudinea

Question 28

polychaeta, oligochaeta, hirudinea are distinguished by the amount of bristles they have which is called

Answer 28

setae

Question 29

they have many chaetae

Answer 29

polychaeta

Question 30

chaetae means

Answer 30

hairs

Question 31

they have a few chaetae

Answer 31

oligochaeta

Question 32

they have none chaetae

Answer 32

leeches

Question 33

their chaetae are arranged within fleshy, flat, paired appendages that protrude form each segment called parapodia

Answer 33

polychaeta

Question 34

polychaeta have their chaetae are arranged within fleshy, flat, paired appendages that protrude form each segment called --------

Answer 34

parapodia

Question 35

filter feeders living in tubes are called

Answer 35

fan worms

Question 36

some poluchaate species are produced in aquaculture farms to serve as ---- -----

Answer 36

fishing bait

Question 37

they live most commonly in freshwater and lack bristles but have suckers at either end of their body

Answer 37

leeches

Question 38

most leeches are ------- and ----

Answer 38

scavengers or predators

Question 39

minority of leeches are -----

Answer 39

parasites of vertebrates

Question 40

they pierce their skin and suck their blood

Answer 40

leeches

Question 41

they release in their saliva therapeutic components that restore blood circulation and relieve pain

Answer 41

leeches

Question 42

they are the most abundant members of the class oligochaeta

Answer 42

earthworms

Question 43

they are characterized by the presence of clitellum

Answer 43

earthworms

Question 44

earthworms are characterized by the presence of

Answer 44

clitellum

Question 45

it secretes mucus during copulation and egg cases

Answer 45

clitellum

Question 46

they eat their way through soil digesting the organic material they ingest

Answer 46

earthworms

Question 47

each segment of their body has four pair of setae that provide traction while circular and longitudinal muscles allows them to expand and contract their segments

Answer 47

earthworms

Question 48

it provides traction while circular and longitudinal muscles allows them to expand and contract their segments

Answer 48

four pair of setae

Question 49

they move as coordinated waves of contraction run along their body

Answer 49

4 pairs of setae in earthworms

Question 50

they are hermaphrodites but cannot fertilize themselves

Answer 50

earthworms

Question 51

they are sold as an organic and safe fertilizer

Answer 51

earthworm castings

Question 52

during gastrulation protostome embryos; mouth is formed

Answer 52

first

Question 53

during gastrulation protostome embryos' mouth is formedfirst by the

Answer 53

blastopore

Question 54

in deuterostomes anus arises

Answer 54

first

Question 55

almost all ----- are marine with some carnivorous species with jaws and filter feeders living in tubes such as fan worms

Answer 55

polychaete