Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Zoo 201 > Platyhelminthes > Flashcards

Platyhelminthes Flashcards

1
Q

The classes that make up the Platyhelminthes are

A

Turbellaria (planarians

Trematoda (flukes)

Cestoda (tapeworms)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Turbellaria are also known as

A

planarians

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Trematoda are also known as

A

flukes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Cestoda are also known as

A

tapeworms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A genus within Turbellaria is

A

Dugesia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Two genuses within the Trematoda are

A

Fasciola and Schistosoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A genus within the Cestoda is

A

Taenia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Platyhelminthes have how many germ layers

A

three

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Platyhelminthes have no coelom which makes them

A

acoelomates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Platyhelminthes have cephalization which means that

A

they have an obvious “head” end

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Platyhelminthes have a digestive tract.

A

incomplete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Platyhelminthes are characterized by their

A

flattened bodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do planarians feed?

A

by everting their ventral pharynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What structure allows planarians to move?

A

cilia on their ventral side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

planarians have the amazing ability to

A

regenerate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

flukes and tapeworms are both

A

endoparasites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

tapeworms have no

A

mouth or gut

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The scolex of tapeworms is made up of

A

hooks and suckers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

the Strobila of tapeworms is made up of

A

proglottids

20
Q

The strobila of tapeworms can be

A

immature, mature or gravid

21
Q

The two types of hosts for tapeworms are

A

definative (human)

intermediate (pig or dog)

22
Q

In the definitive host,

A

sexual reproduction occurs

23
Q

In the intermediate host,

A

asexual reproduction occurs through various larval stages

24
Q

The flukes definitive host is

A

in the liver of a sheep

25
The intermediate host for a fluke is
a snail
26
Dioecious means
each individual has male or female reproductive organs but not both
27
monoecious means
each individual has male and female reproductive organs
28
How can you tell if you're looking at a midsection cross section of a _Planaria_?
it shows the pharynx
29
How do _Taenia pisiformis_ gravid proglottids differ from mature ones?
gravid proglottids have eggs
30
Why does the meracercarial cyst stage of the _fasciola hepatica_ occur on vegetation?
Because the vegetation is consumed by sheep which become the definitive hosts of the flukes.
31
Which stage of the _Fasciola hepatica_ is shown? What happens to this after it leaves the intestines of a sheep?
the egg it enters water where it undergoes embryological development before the next stage hatches out
32
33
Which stage of the _Fasciola hepatica_ life cycle is pictured here? What occurs during this stage?
Miracidium, also known as the free-swimming stage In this stage, the miracidium seeks a fresh-water snail, burrows into it's tissue and loses its cilia before moving on to the next stage.
34
Where does the sporocyst stage of the _Fasciola hepatica_'s life cycle occur? What occurs during this stage?
This occurs within the snail or intermediate host. As the sporocyst grows, it asexually reproduces the next stage within itself.
35
Which stage if the _Fasciola_ _hepatica_ life cycle is shown here? What occurs during this stage?
Redia The Redia leaves the sporocyst and lives within the liver of the snail. As it grows it asexually reproduces the next stage in itself.
36
Pictured is which stage of the _Fasciola_ hepatica life cycle? What occurs during this stage?
Cercaria, which is another free-swimming stage During this stage, the Cercaria leaves the snail and seeks out to find a particular plant. Once found, it settles on the plant's surface and looses it's tail, becoming the next stage of the life cycle.
37
Pictured is which stage of the _Fasciola hepatica_ life cycle? What occurs during this stage?
Metacercaria This stage remains on the plant until it is consumed by humans
38
Pictured is which stage of the _Fasciola hepatica_ life cycle? Where does this take place?
Pictured is an adult sheep liver fluke. This stage lives in the bile ducts of a sheep liver where it sexually produces eggs that pass into the intestine.
39
Pictured is? Name the numbered structures.
_Dugesia_ 1. Eye 2. Digestive system 3. Transverse muscle layer 4. longitudinal muscle layer 5. excretory system 6. flame cell 7. pharynx 8. nerve cord 9. brain 10. ovary 11. testes
40
Name the numbered structures.
1. parenchyma 2. gastrodermis 3. lumen of pharynx 4. epidermis 5. diverticula of intestinal cavity 6. dorsoventral muscles 7. circular muscles 8. nerve cord 9. pharyngeal cavity 10. ciliated epidermis 11. pharynx 12. longitudinal muscles
41
What genus of which class is pictured? Name the numbered structures.
_Dugesia_ of Turbellaria (planarians) 1. eyespot 2. auricle 3. gastrovascular cavity 4. pharynx 5. mouth 6. diverticulum of intestinal cavity
42
Name the numbered structures.
1. epidermis 2. testis 3. cilia 4. pharyngeal cavity 5. dorsoventral muscles 6. gastrodermis = endoderm 7. pharynx
43
Name the numbered structures
1. epidermis 2. intestinal cavity 3. mesenchyme 4. dorsoventral muscles 5. endoderm
44
Pictured is Name the numbered structures.
The scolex of _Taenia pisiformis_ 1. hooks 2. rostellum 3. suckers
45
Pictured is? Name the numbered structures.
the immature proglottids of _Taenia pisiformis_ 1. early ovary 2. early testes 3. excretory canal 4. immature vagina and ductus deferens
46
Pictured is? Name the numbered structures (1,2,4,5).
the mature proglottid of _Taenia pisiformis_ 1. uterus 2. ovary 4. excretory canal 5. testes
47
Pictured is Name the numbered structures.
the gravid proglottids of _Taenia pisiformis_ 1. zygotes in branched uterus 2. genital pore

Zoo 201 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions