lecture 18

Question 1

what is phylum lophophorata

Answer 1

the phylum w lophophores

Question 2

what are the two extant lophophore phylum

Answer 2

bryozoa and branchiopoda

Question 3

what is the synapomorphy of lophopgore

Answer 3

semi circular or coiled array of ciliated tentacles

Question 4

what are some features shared by lophophorata
Bw larva digestive sys gut cavity lifestyle

Answer 4

-lophophore larva
-epistome
-complete digestive system
-eucoelomic cavities
-sessile or sedentary lifestyle

Question 5

deuterostome vs protostome debate lophophorates
Cleavage
BlSfospors
Gut cavity

Answer 5

deut:
radial and indeterminate cleavage
the blastopore does not become mouth, and there is a multi part eucoelom
prot:
molecular data places them

Question 6

phylum bryozoa

Answer 6

moss animals

Question 7

bryozoa how many spp

Answer 7

6300

Question 8

roles in ecosystem bryozoa

Answer 8

reef building

Question 9

what are some characteristics of byozoa
Do they have polyps??

Answer 9

colonial
-have zooids rather than polyps

Question 10

features of zooids
What is skele made of?

Answer 10

exoskeleton made of either calcium carbonate , gelatinous, or chitin
-lack respiratory organs

Question 11

what do zooids lack?

Answer 11

Resp organs, nephridia, heart and blood vessels

Question 12

how are bryozoan individuals connected

Answer 12

by tissue strands called funiculi

Question 13

what does funiculi do

Answer 13

transports nutrients among zooids

Question 14

what are the different types of zooids

Answer 14

feeding zooid- most common
defensive zooid
vibracula
gonozooid

Question 15

what are defensive zooids called

Answer 15

avicularia

Question 16

what are vibrancula

Answer 16

zooids that form long movable brisle.
vibrancula around edges are leg like, for walking

Question 17

what is function of gonozoids

Answer 17

egg chamber

Question 18

diet of bryozoa

Answer 18

most are suspen feeders

Question 19

how do bryozoa feed

Answer 19

cilia on lophophore send particles towards mouth
larger particles flicked towards mouth w tentacles

Question 20

what is the bryozoa gut like

Answer 20

U shaped gut

Question 21

different sexes byozoa

Answer 21

colont level is hermaphroditic

Question 22

how does sexual reproduction occur in bryozoa

Answer 22

sperm released and eggs are brooded

Question 23

how is a new colony started

Answer 23

larva settle and transform into ancestrula

Question 24

what do bryozoa larva not look like

Answer 24

trochophore larvae

Question 25

what happens in bryozoa asexual reproduction 2) what is unique to freshwater species

Answer 25

budding of new zooids 2) statoblasts are produced

Question 26

what are statoblasts

Answer 26

they are resistant stages of growth, like gemmules. survive freezing and desiccation and can be transported

Question 27

what are the economic impacts of bryozoa

Answer 27

remove pariculate matter from water and reef build. they are also fouling organisms

Question 28

why are bryozoans important to paracites

Answer 28

they are hosts of myxozoans that parasitize fish

Question 29

Phylum branchiopoda

Answer 29

lamp shells

Question 30

branchiopoda how many spp

Answer 30

440

Question 31

when were branchiopods diverse and commong

Answer 31

in the past

Question 32

how do branchiopoda shells differ from bivalves

Answer 32

enclosed by two calcified shells, but have ventral and dorsal size, and are unequal in size

Question 33

how do branchiopoda attach to substrate

Answer 33

using stalk called pedicle

Question 34

do branchiopoda have lophophores

Answer 34

yes, and they can be complexly coiled

Question 35

where do branchiopoda keep lophophore

Answer 35

inside shell

Question 36

why called lampshell?

Answer 36

because liek old oil lamps

Question 37

branchoipoda gut

Answer 37

blind- no anal opening

Question 38

branchiopoda sexes

Answer 38

seperate- most species release eggs and sperm

Question 39

what do some branchiopoda larva look like?

Answer 39

trochophore

Question 40

how doe branchiopoda feed

Answer 40

send small paricles to mouth