1)platyhelminthes |
phylum of flatworms |
2)three |
number of body layers in worms |
3)bilateral |
symmetry f flatworms |
4)dorsal |
upper body surface of worms |
5)ventral |
lower body surface of worms |
6)ectoderm |
outermost cell layer of worms |
7)mesoderm |
middle cell layer of worms |
8)endoderm |
innermost cell layer of worms |
9)acoelomate |
solid body in flatworms |
10)coelom |
body cavity |
11)gastrovascular |
gut with a single opening in flatworms |
12)absorption |
how flatworms exchanges gases with their environment |
13)anterior |
head or front end of a flatworm |
14)cephalization |
anterior end with sensory structures concentrated there |
15)parasite |
worms that live on or inside the body of their host |
16)turbellaria |
class of flatworms containing the freshwater planarian |
17)pharynx |
extendable feeding tube on the underside of planarians |
18)mucus |
secreted by planarians to glide across |
19)flame |
excretory cells in worms that filter wastes |
20)ganglia |
clusters of nerve cells in worms |
21)hermaphrodites |
worms that make both eggs & sperm |
22)trematoda |
class of flatworms containing flukes |
23)suckers |
found on the ends of flukes to attach to hosts |
24)tegument |
tough outer covering on flukes |
25)cestoda |
class containing tapeworms |
26)scolex |
anterior end of a tapeworm with hooks & suckers |
27)proglottids |
reproductive sections of a tapeworm’s body |
28)nematoda |
phylum for roundworms |
29)taper |
shape of both ends of a roundworms body |
30)cuticle |
protective noncellular layer of roundworms |
31)ascaris |
roundworm found in pig & horse intestines |
32)hookworms |
intestinal parasitic roundworm with cutting plates in it’s mouth |
33)trichinosis |
disease that result from eating infected undercooked pork |
34)pinworms |
most common parasitic roundworm of children in the U.S. |
35)rotifera |
phylum of worms with a crown of cilia surrounding the mouth |
36)mastax |
muscular organ of rotifers to break down food |
37)pseudocoelomates |
rotifers & nematodes are examples |