lab 4

Question 1

whats different about xenacoelomorpha gut?

Answer 1

dont have one, no ceola either

Question 2

turbellaria group

Answer 2

mostly free living, platyheminths

Question 3

Polycladida

Answer 3

turbellarian order
marine flatworms

Question 4

why are polycladida flat?

Answer 4

SA for diffusion

Question 5

polycladida gut

Answer 5

3 branches

Question 6

tricladida
gut?
An example

Answer 6

DUGESIA
dont like light
tripartite gut

Question 7

flame cells, in what

Answer 7

protonephridia
dugesia excretion system1

Question 8

protonepheridia

Answer 8

flagellated structure that helps direct particles

Question 9

dorsal epidermis of dugesia

Answer 9

have rhabdites and secretory shit –> mucus

Question 10

ventral epidermis w cillia function dugesia

Answer 10

cillia for locomotion

Question 11

rhabdites

Answer 11

rodlike discharged in mucus

Question 12

basal lamina function

Answer 12

filter allowing only water and small molecules to pass through, cells sit on it

Question 13

circular muscle layer dugesia

Answer 13

locomotion, run around the circumference of their bodies

Question 14

longitudinal muscle layer

Answer 14

locomotion, run the length of their bodies

Question 15

dorso ventral muscles

Answer 15

top to bottom contraction, keeps flat shape

Question 16

order rhabdocoela
gut?

Answer 16

tuberellian
simple, doesnt branch

Question 17

class trematoda
gut?
example?

Answer 17

platyheminth
parasitic fluke
2 branched gut
Clonorchis

Question 18

different larval stages of trematoda

Answer 18

miracidium, redia, cercaria

Question 19

miracidium

Answer 19

first host–> snail
undergoes asexual reproduction

Question 20

redia

Answer 20

still in first host, developed from miracidium

Question 21

cercaria

Answer 21

emerges from snail and looks for fish

Question 22

which blood fluke is the male?
how does male hold female

Answer 22

bigger one
banana peek, encompases female

Question 23

class cestroidea
examples?

Answer 23

platyheminth
taenia
tapeworms

Question 24

scolex

Answer 24

found in tapeworm, teeth thing w hooks and suckers, feed through diffusion and attaches to intestine

Question 25

mature proglottid

Answer 25

section w eggs and testes and uterus midway b/w gravid and immature

Question 26

gravid proglottid

Answer 26

sacs full of eggs

Question 27

do tapeworm have gut?

Answer 27

no, just diffusion

Question 28

tapeworm where does sexual and asexual reproduction happen?

Answer 28

Asexual in intermidiate host sexual in definitive host

Question 29

phylum nemertea

Answer 29

have proboscis have complete gutw

Question 30

bladder worm

Answer 30

scolex, is in intermediate host

Question 31

nemertea vs platyheminth

Answer 31

bigger and longer

Question 32

where is proboscis contained?

Answer 32

rhynchocoel

Question 33

how does proboscis capture prey

Answer 33

proboscis rapidly everted w hooks