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Platyhelminthes > Platyhelminthes > Flashcards

Platyhelminthes Flashcards

1
Q

Size of Platyhelminthes

A

Vary in size from a millimeter to many meters in length like tapeworms

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2
Q

Shape of Platyhelminthes

A

Normally slender, leaf-like form but can also be long and ribbon-like

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3
Q

Symmetry of Platyhelminthes

A

Bilateral

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4
Q

Forms a protective barrier that guards the parasite against the immune system of the host

A

Tegument

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5
Q

In general, platyhelminth digestive systems include a ____, a ___, and an ____

A

mouth; pharynx; intestine

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6
Q

True or False: Platyhelminthes are herbivores

A

False; carnivorous

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7
Q

True or False: Cestodes possess a digestive tract

A

False

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8
Q

____ systems control water balance

A

Osmoregulatory

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9
Q

Flagellated flame cells

A

Protonephridia

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10
Q

Sense organs of Platyhelminthes

A

Ocelli or eyespots

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11
Q

Reproduction of Turbellaria

A

Asexual (fission) and Sexual reproduction

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12
Q

Reproduction of Trematodes

A

asexual reproduction happens in their intermediate host (snail)

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13
Q

True or false: Almost all flatworms are monoecious

A

True

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14
Q

Habitat/s of Class Turbellaria

A

Marine, freshwater, and terrestrial habitats

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15
Q

Differentiate Endoparasites from Ectoparasites

A

Endo = inside the host; Ecto = outside

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16
Q

Least well-known subclass of Trematoda

A

Subclass Aspidogastrea

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17
Q

More well-known subclass of Trematoda

A

Subclass Digenea

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18
Q

First intermediate host of Trematoda

A

Mollusk

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19
Q

Schistosoma that lives primarily in veins draining the large intestine

A

S. mansoni

20
Q

Schistosoma that occurs mostly in veins of the small intestine

A

S. japonicum

21
Q

Schistosoma that lives in veins of the urinary bladder

A

S. haematobium

22
Q

Shelled embryo

A

Egg

23
Q

free-swimming larva; hatches out from its shell; discards its ciliated epithelium; penetrates IH

A

Miracidium

24
Q

Sac-like form; several embryos develop asexually to become rediae

A

Sporocyst

25
Q

develop within the redia; emerges from the snail; possess tail for swimming; considered as juveniles

A

Cercariae

26
Q

Infective stage (definitive host); encysted stage

A

Metacercariae

27
Q

Embryo; Pharynx and gut

A

Rediae

28
Q

usually bears the encysted metacercariae

A

Second IH

29
Q

Are Monogenea endoparasites or ectoparasites?

A

Ectoparasites

30
Q

External parasites of many fish, especially on gills, but a few are found in bladders of frogs and turtles.

A

Class Monogenea

31
Q

A problematic pathogen in crowded fish farming

A

Class Monogenea

32
Q

True or False: Class Cestoda are Endoparasites

A

True

33
Q

True or False: Class Cestoda lack digestive system but have well-developed muscles.

A

True

34
Q

True or False: Class Cestoda lack sensory organs

A

True

35
Q

True or False: Proglottid formation is a true segmentation

A

False

36
Q

Nearly all cestodes require how many host/s?

A

Two

37
Q

In Cestodes, the adult is parasitic in the ____ of the vertebrates

A

digestive tract

38
Q

Taenia saginata common name

A

Beef tapeworm

39
Q

Taenia solium common name

A

Pork Tapeworm

40
Q

Diphyllobothrium latum common name

A

Fish tapeworm

41
Q

Dipylidium caninum common name

A

Dog tapeworm

42
Q

The anterior end of a tapeworm that bears suckers and hooks for attachment

A

Scolex

43
Q

Each segment in the strobila of a tapeworm

A

Proglottid

44
Q

Consists of proglottid, segmented part of the body of a tapeworm

A

Strobila

45
Q

Replication of sex organs

A

Pseudometamerism

Platyhelminthes (1 decks)

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