T22 - lophotrochozoa

Question 1

the alternate name for flatworms is…

Answer 1

platyhelminthes

Question 2

explain how the following body parts are simple for flatworms:

• lack of body cavity
• incomplete _ _ _ _ tract
• gas exchange via diffusion

Answer 2

• the lack of body cavity mean not maintaining the hemocoelom or the coelom
• the incomplete digesttive tract takes away the need for anus
• no need for circulatory of gas-exchange system

Question 3

what are the similarities and differences between catenulida and rhabditophora

Answer 3

rhabditophora is more diverse with free-living and parasiting species

they are both flatworms

Question 4

what makes the parasitism of rhabditophorans unique?

Answer 4

have 2+ hosts

Question 4

intermediate host

Answer 4

where asexual reproduction occurs for rhabditophorans

Question 5

definitive host

Answer 5

where the parasite undergoes sexual reproduction

Question 6

what are the differences and similarities of trematodes and tapeworms

Answer 6

they are both parasitic rhabditophorans

tapeworms are consumed from intermittent to definitive host, and are endoparasitic

Question 7

what are the similarities and differences between ectoprocts and braviopoda

Answer 7

similarities: both lophotrochozoans, sessile with motile larval stages after sexual reproduction. they are the lophophores of the lophotrochozoans

ectoprocts look like coral, have a hard exoskeleton, and have a retractable lophophore

brachiopods look like clams and have paired lophophores

Question 8

what are the