Chapter 33 -6

Question 1

Flat worms are in which phylum?

Answer 1

Platyhelminthes

Question 2

What are the 3 classes of phylum platyhelminthes?

Answer 2

Turbellaria - planaria
Cestoda - tapeworms
Trematoda - flukes

Question 3

What are the characteristics of platyhelminthes?

Answer 3

3 tissue layers
acoelomate body 
bilateral 
ladder like arrangement of nerves
hermaphroditic

Question 4

What is the structure of platyhelminthes?

Answer 4

specialized ciliated or thick protein cuticle w/ flame cells for excretion

Question 5

What happens to larger wastes in platyhelminthes?

Answer 5

excreted into the gut and eliminated through the mouth

Question 6

What is the first brain of platyhelminthes?

Answer 6

nerve ganglion

Question 7

What is hermaphroditic and what does it do?

Answer 7

both sexes in same organism

doubles reproductive rate

Question 8

What class & phylum is free-living planaria in?

Answer 8

turbellaria

platyhelminihes

Question 9

What are the characteristics of the class turbellaria?

Answer 9

1 inch in length
ciliated cuticle
lives in fresh water ponds and lakes
nocturnal saprovore

Question 10

What class & phylum are parasitic tapeworms in?

Answer 10

cestoda

platyhelminihes