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WorksheetsWORMS WORMS WORMS Review
Total questions: 20
Worksheet time: 35mins
Match the following
Phylum Annelida
segmented worms (polychaetes, earthworms, leeches)
Phylum Platyhelminthes
flatworms (free-living planarians, parasitic tapeworms & flukes)
Phylum Nematoda
roundworms (parasitic worms such as pinworms, hookworms, filarial worms)
Match the following
Phylum Annelida
have both circular & longitudinal muscles
Phylum Platyhelminthes
incomplete gut
Phylum Nematoda
do not have circular muscles (only longitudinal)
Class Turbellaria
free-living flatworms such as Planaria
Class Monogenea
ectoparasites of fish; flukes with one generation in their life cycle
Class Trematoda
flatworms that are parasites fo vertebrates; flukes such as the Schistosome blood fluke
Class Cestoidea
flatworms that are strobilated intestinal parasites, such as the beef tapeworm
Class Polychaeta
characterized by parapodia, numerous setae, and live in marine environments
Class Clitellata
live in terrestrial or freshwater environments; have a clitellum, monoecious, few or no setae
Subclass Oligochaeta
group within Class Clitellata, shorter setae, lack parapodia, contain the earthworms
Subclass Hirudinea
group within Class Clitellata; loss of setae and less obvious segmentation; leeches
The repeating units of the tapeworm that make up the strobila are called
metamerism
segments
proglottids
neck
Tapeworms are highly modified and adapted to parasitic life. One example of this is a lack of
excretory structures
a tegument
reproductive organs
mouth and digestive tract
Tapeworms have proglottids that each have reproductive organs. Which reproductive organs are present in each proglottid?
male
female
both
Free-living flatworms often utilize asexual reproduction. Which type do they use?
fertilization
budding
hermaphroditism
fission
Cephalization in flatworms exists as
having a cerebral ganglion at the anterior end
having protonephridia in the anterior end
having reproductive organs in the anterior end
having statocysts in the anterior end
Put the following digestive organs of the earthworm in the order that food travels through them.
mouth
pharynx --> esophagus
crop
gizzard
intestine
All annelids except for leeches have which of the following?
parapodia
setae
mouth
segments
Annelids have a circulatory system. Which term best describes it?
open
closed
cephalized
metameric
The worms add a new embryonic germ layer! Which is it?
endoderm
mesoderm
ectoderm
paraderm
Subclass Hirudinea has which of the following body structures?
pair of bristles on each segment
flattened body with anterior and posterior suckers
bristle called setae that grab into the soil
worms that push through the sand with fanlike structures
Class Polychaeta has an interesting reproductive tactic where reproductive organisms swarm and reproduce, then dying after reproduction called
fission
budding
monoecious
epitoky
Label the earthworm diagram.
Porifera
sessile, asymmetrical nd no tissues or organs; choanocytes
Cnidaria
diploblastic radially symmetrical with cnidocytes
Platyhelminthes
triploblastic acoelomates with bilateral symmetry and flame cells
Nematoda
triploblastic pseudocoelomates without segmentation; bilaterally symmetrical; tapered
Annelida
triploblastic coelomates with bilateral symmetry, paired setae, and metamerism
rhabdite
Turbellarian cells that create a mucus sheath around body for protection
protonephridia
excretory structures with no opening internally
ocelli
simple eyespots in turbellarians
glycocalyx
protect flukes from their host's internal environment
gravid
older proglottids of tapeworms that are filled with eggs; all other reproductive structures gone
Match the following
hirudin
anticoagulant secreted by leeches into the wound they create to prevent clotting
clitellum
band of specialized segments in annelids that secretes a mucus ring for eggs and sperm
ecdysis
molting
parapodia
segmentation
metamerism
paddlelike appendages that assist aquatic annelids in locomotion and burrowing
There are many different types of nematodes. Some are parasites, and some are not. One parasite can be picked up from the soil in warmer climates, such as the southern US. It is the (a) . Another parasite is often found in children and is indicated by scratching at the rear end. This parasite is the (b) . Another parasite that can cause elephantiasis due to lymphatic system blockage and also is the type of organism that causes heartworm disease in dogs is the (c) . A common nematode used as a model organism in many genetics and research labs is (d) . Finally, eating undercooked pork can lead to infection from (e) .
