platyhelminthes

Question 1

bilateral symmetry

Answer 1

cephalization

Question 2

mesoderm develops into relatively solid tissue called ________

Answer 2

parenchyma

Question 3

body cavity lined with mesoderm

Answer 3

coelom

Question 4

1st opening (blastopore) becomes the mouth

Answer 4

protostomes

Question 5

blastopore becomes anus, second opening becomes mouth

Answer 5

deuterostomes

Question 6

subdivision of protostomes that possess either a weird feeding structure (lophophore) or a larval form called a trochophore

Answer 6

lophotrochozoans

Question 7

possess a cuticle or exoskeleton that is molted during growth

Answer 7

ecdysozoans

Question 8

all parasitic flatworms have a ________ (AKA neodermis) as an external covering

Answer 8

syncytial tegument

Question 9

There are around _______ species

Answer 9

20,000

Question 10

free living flatworms generally have a ________ epidermis as well as other shared characteristics with the parasitic forms

Answer 10

ciliated

Question 11

the 3 tissue areas of flatworms

Answer 11

epidermis/syncytial tegument, parenchyma and muscles within organ systems, digestive systems

Question 12

centralized brain located anteriorly, usually a _______

Answer 12

bilobed ganglion

Question 13

what are the sensory, motor, and association neurons

Answer 13

ocelli, statocysts, rheoreceptor, chemoreceptors, tactile sensors

Question 14

concentrations of neurons found at _________

Answer 14

eye spots, auricles, mouth, genital pore

Question 15

asexual reproduction is common in free-living flatworms through ________

Answer 15

fission

Question 16

digestive parasites like tapeworms completely lack the __________

Answer 16

gastrovascular cavity

Question 17

early kidney type cells

Answer 17

protonephrida

Question 18

______ create current into tube cell

Answer 18

flame cell

Question 19

______ parasites are generally ciliated

Answer 19

free living

Question 20

rhabdites associated with

Answer 20

neurons (free living)

Question 21

three duel glands in free living parasites

Answer 21

anchoring, viscid, releasing

Question 22

associated with mucous gland

Answer 22

rhabdites

Question 23

beneath epidermis/tegument is

Answer 23

muscle and parenchyma