Quiz 2

Question 1

clades of platyhelminthes

Answer 1

Metazo, Eumetazoa, Bilateral, protostomia, spirilla

Question 2

three classes of platyhelminthes

Answer 2

flatworm, tapeworm, fluke

Question 3

parasitic life cycle

Answer 3

often require more than one host

Question 4

platyhelminth

Answer 4

one

Question 5

platyhelminths

Answer 5

more than one

Question 6

Platyhelminthes

Answer 6

the phylum

Question 7

Bilateral symmetry

Answer 7

when the right and left side are mirror images of one another

Question 8

anterior

Answer 8

head end

Question 9

posterior

Answer 9

tail end

Question 10

dorsal

Answer 10

side facing up

Question 11

ventral

Answer 11

side facing down

Question 12

dorsoventrally flattened

Answer 12

flattened from top down

Question 13

unidirectional movement

Answer 13

move with one part of the body primarily leading the way, which is identified as the anterior end
-When animals begin to move, the surface of the body moving along the substrate and surface facing up evolved different adaptations

Question 14

triploblastic

Answer 14

develops from three germ layers

Question 15

three germ layers of triploblasty

Answer 15

endoderm, ectoderm, mesoderm

Question 16

what does having three tissue layers mean for the body?

Answer 16

bodies are more complex than diploblastic