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Worksheets4 Acoelomates
Total questions: 29
Worksheet time: 15mins
Name
Class
Date
1.
specialized excretory cells within flatworms that function like our kidneys
a)
flame cells
b)
sub-epidermal nerve plexus
c)
gastrovascular cavity
d)
statocysts
2.
similar to cnidarian nerve net; a collection of nervous tissue found just under epidermis; only nervous system found in primitive flatworms
a)
flame cells
b)
sub-epidermal nerve plexus
c)
gastrovascular cavity
d)
statocysts
3.
blind gut cavity with a single opening for both food and waste products; forms the intestines of flatworms
a)
flame cells
b)
sub-epidermal nerve plexus
c)
gastrovascular cavity
d)
statocysts
4.
sensory receptors that are responsible for sensing balance/equilibrium
a)
flame cells
b)
sub-epidermal nerve plexus
c)
gastrovascular cavity
d)
statocysts
5.
only free-living class of flatworms; mostly marine, some freshwater, and a few are terrestrial; marine forms are very colorful
a)
Class Turbellaria
b)
Class Trematoda
c)
Class Cestoda
d)
Class Monogenea
6.
class of flatworms consisting of tapeworms; parasitic in digestive track of all vertebrates; have proglottids that break off to disperse eggs; scolex attaches them to their vertebrate host's intestines
a)
Class Turbellaria
b)
Class Trematoda
c)
Class Cestoda
d)
Class Monogenea
7.
flatworm class consisting of endoparasitic flukes with flat, leaf-like bodies; complicated life cycle; infection sites include lung, liver, or bloodstream
a)
Class Turbellaria
b)
Class Trematoda
c)
Class Cestoda
d)
Class Monogenea
8.
Phylum Platyhelminthes class that includes small ectoparasitic flukes that remain on a single host throughout the entire life cycle; found in fish gills, turtle or frog bladders; hippo eye
a)
Class Turbellaria
b)
Class Trematoda
c)
Class Cestoda
d)
Class Monogenea
9.
life cycle that requires multiple hosts in order to continue to the next stage of development and become sexually mature
a)
direct life cycle
b)
complicated life cycle
c)
intermediate host species
d)
metamorphosis
10.
host species in which a parasite larvae undergoes a portion of its development; larvae may reproduce asexually inside this host
a)
direct life cycle
b)
complicated life cycle
c)
intermediate host species
d)
metamorphosis
11.
endoparasitic flukes; adults live in the liver and bile passageways, found in Asia, humans become infected by eating undercooked fish
a)
Chinese liver fluke
b)
blood fluke
c)
beef tapeworm
d)
rat lung fluke
12.
parasitic flukes that are dioecious and live in the veins near the intestines or bladder; larvae enters human host by penetrating skin (hair follicles); schistosomes
a)
Chinese liver
b)
blood flukes
c)
beef tapeworm
d)
rat lung fluke
13.
endoparasitic fluke found in the lungs; symptoms include difficulty breathing, pneumonia, death
a)
Chinese liver fluke
b)
blood fluke
c)
pork tapeworm
d)
lung fluke
14.
tapeworm in which larval cysts cannot develop in human if we eat the eggs; adult tapeworm can develop if we eat under-cooked meat infected with larval cysts
a)
Chinese liver fluke
b)
blood fluke
c)
beef tapeworm
d)
rat lung fluke
15.
specialized organ used to attach a tapeworm to a host; can have suckers, hooks, or tentacles
a)
scolex
b)
ocelli
c)
gastrovascular cavity
d)
chemoreceptors
16.
light sensitive eye spots
a)
scolex
b)
ocelli
c)
gastrovascular cavity
d)
chemoreceptors
17.
sensory receptors that allow an animal to sense chemicals in the environment, specifically for food, predators, & mates
a)
scolex
b)
ocelli
c)
gastrovascular cavity
d)
chemoreceptors
18.
reproductive segments of tapeworms that break off during digestion; house reproductive organs and eggs
a)
proglottids
b)
flame cells
c)
statocysts
d)
ocelli
19.
Typical way in which parasitic worm eggs leave a host's body
a)
feces or urine
b)
blood
c)
saliva
d)
sneezing
20.
What is the purpose of proglottids?
a)
sense chemicals in the environment
b)
reproduction
c)
excretion
d)
sense light vs. dark
21.
What is the intermediate host species for most parasitic flukes?
a)
rat
b)
snail
c)
fish
d)
human
22.
simplest animals to have a circulatory system & complete digestive track, 4-lobed brain, Phylum Nemertea
a)
Phylum Platyhelminthes
b)
Phylum Nemertea
c)
Phylum Gnathostomulida
d)
Phylum Nematoda
23.
having three distinct layers of tissues
a)
monoecious
b)
dioecious
c)
diploblastic
d)
triploblastic
24.
host species a parasite is able to enter, but is not able to continue its development/life cycle; the host's immune system may attack the parasite
a)
dead-end host
b)
intermediate host
c)
invertebrate vector
d)
final host
25.
invertebrate that carries a disease-causing organism from one host to another host
a)
dead-end host
b)
intermediate host
c)
invertebrate vector
d)
final host
26.
host in which the parasite develops into mature adults that are able to sexually reproduce
a)
dead-end host
b)
intermediate host
c)
invertebrate vector
d)
final host
27.
What do fluke larvae do inside snails?
a)
dance the tango
b)
reproduce asexually
c)
remain dormant
d)
reproduce sexually
28.
location in the host's body in which a parasite lives and/or reproduces
a)
infection site
b)
invertebrate vector species
c)
dead-end host
d)
final host
29.
host's cells that have been reprogrammed by parasitic worm larvae
a)
nurse cells
b)
flame cells
c)
white blood cells
d)
statocysts
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