Ch 14: Lophophorate Phyla

Question 1

5 lophophorate features

Answer 1

• all feed w/ lophophore
• u0shaped gut w/ anus near mouth, but outside of lophophore
• no distinct head
• all secrete some sort of shell
• closed circ system (but not dynamic)

Question 2

lophophore

Answer 2

structure carrying ciliated tentacles

Question 3

phylum phoronida live in burrows lined w/

Answer 3

chitin

Question 4

2 steps to ingestion in phoronida

Answer 4

• cilia draw w thru tentacles of lophophore

- cilia move food particles towards mouth

Question 5

gas exchange in phoronida occur in

Answer 5

the tentacles/lophophore

Question 6

phoronid circ (2)

Answer 6

• contractile vacoules but no heart

- blood cells have hemoglobin

Question 7

nephridia funct (2) in phoronida

Answer 7

• excretion

- carry sperm and fert eggs to the outside

Question 8

phoronida repro (2)

Answer 8

• budding

- sexually

Question 9

brachiopods are ? fauna

Answer 9

epi

Question 10

what are brachiopod shells made of

Answer 10

calcerous or phosphate

Question 11

brachiopod shell symmetry (2)

Answer 11

• each shell has bilateral symm

- dorsal and ventral shells, not L and R

Question 12

what do brachiopods have instead of a muscular foot?

Answer 12

a pedicle that helps them attach to the substrate

Question 13

brachidium funct

Answer 13

supports lophophore

Question 14

2 protection in brachipods

Answer 14

• shell

- distasteful compounds in tissue

Question 15

repro in brachiopods

Answer 15

sexual

Question 16

bryozoa features (2)

Answer 16

• clonal colonies of tiny zooids

- each zooid secretes a case

Question 17

bryozoa repro

Answer 17

asexual budding; some may have sexual ability

Question 18

avicularia

Answer 18

‘pinching jaws’ NOT for eating

Question 19

avicularia funct

Answer 19

defense

Question 20

Brown bodies

Answer 20

gut, lophophore, other tissues broken down/condensed

Question 21

2 reasons for bryozoan regeneration

Answer 21

• planktonic food may have toxins that have built up

- dispose of accumulated wastes (their own)