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BIO044: General Zoology > BIO 004 - Module 9 > Flashcards

BIO 004 - Module 9 Flashcards

1
Q

Level of complexity: Tissue-organ grade
Free-living forms and parasitic forms
Tripoblastic
Body is flattened dorsoventally

A

Phylum PLATYHELMINTHES

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2
Q

Types of epidermis

A

Free-living and Parasitic

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3
Q

Free-living forms have this

A

Ciliated cellular epidermis

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4
Q

Adult parasitic forms nonciliated body covering

A

Syncytial tegument/neodermis

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5
Q

Resistant to the immune system ang digestive juices of the host

A

Syncytial tegument

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6
Q

Have the ciliated covering similar to free-living form and later shed it once they come in contact with host

A

Larval parasitic form

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7
Q

Found below the epidermis

A

Muscle fiber

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8
Q

Do not have body cavity

A

Acoelomate animals

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9
Q

Fills the space between muscles and organs

A

Parenchymal cells

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10
Q

True or False
Platyhelminthes they have a mouth, a pharynx, and an intestine

A

TRUE

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11
Q

True or False
Gut is complete: with anus, undigested food is released through the mouth

A

FALSE

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12
Q

Phagocytic cells that digest food

A

Gastrodermis

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13
Q

Flatworms are attracted to food by ________________

A

Chemotaxis

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14
Q

Controls water balance

A

Osmoregulation

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15
Q

Excretory and osmoregulatory organs & appear as networks of dead-end tubules that lack internal openings

A

Protonephridia

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16
Q

Specialized excretory cells located at the
ends of the protonephridia. They have cilia that are arranged to give a “flame” appearance.

A

Flame cells

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17
Q

Collects fluids and mainly has
osmoregulatory function

A

Collecting ducts

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18
Q

Fluids and wastes from
collecting ducts are excreted out the body

A

Excretory/Terminal pores

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19
Q

Most primitive nervous system; resembles nerve net of cnidarians, but with a “brain”

A

Subepidermal nerve plexus

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20
Q

The “primitive brain”; actually a mass of ganglion cells with neurons divided into sensory, motor, and association types

A

Cerebral Ganglia

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21
Q

Head containing the main nervous
and sense organs is present

A

Cephalization

22
Q

Light sensitive eyespots

A

Ocelli

23
Q

Tactile cells that form the earlike lobes on the sides of the head of planarians

A

Auricles

24
Q

For balance/equilibrium

A

Statocysts

25
Q

Sensing the direction water currents

A

Rheoreceptors

26
Q

Budding off segments

A

Proglottids

27
Q

Asexual reproduction of platyhelminthes

A

Fission

28
Q

Requires 2 individuals to exchange sperm and fertilize their eggs

A

Cross-filterization

29
Q

Open through a common _________________

A

Genital pore

30
Q

Free-living
Mouth on ventral sides and leads into gut cavity via a pharynx
Combine muscular with ciliary movements to achieve locomotion
Larger terrestrial turbellarians crawl in the same manner of a snail

A

TURBELLARIA

31
Q

Flukes
Monoecious
Mouth is at the anterior/cephalic end
Leaflike
Endoparasites
Larval form: Cercaria

A

TREMATODA

32
Q

Organs for adhesion for them to hold on to host’s tissues

A

Suckers

33
Q

2 suckers

A

Oral sucker and ventral suckers (acetabulum)

34
Q

Mostly parasites
Formerly part of Trematoda
Cause little damage to their hosts under normal conditions

A

MONOGENEA

35
Q

Posterior attachment organ with hooks, suckers, and clamps

A

OPISTHAPTOR

36
Q

“Tapeworms”
Parasites in the digestive tract of vertebrates
Lack a digestive system
Excretory and nervous
No special sense organsproglottid is Monoecious; can self or cross-fertilize
Produces shelled embryos
Proglottids can break off from worm and can still expel eggs

A

CESTODA

37
Q

The “head”, but not a true head, but just the first
segment

A

Scolex

38
Q

The segmented part, onsisting long chain of
proglottids.

A

Strobila

39
Q

Area just behind scolex where new
proglottids are formed.

A

Germinative Zone

40
Q

Segment of the strobila that are reproductive
units

A

Proglottids

41
Q

Younger proglottids; closer/more proximal to the scolex

A

Immature Proglottids

42
Q

The middle segments; can start
reproducing

A

Mature Proglottids

43
Q

The middle segments; can start
reproducing

A

Gravid Proglottis

44
Q

Competition with the host’s nutrients

A

Taeniasis

45
Q

Juvenile tapeworm at a stage in which
the scolex is inverted in a sac and only becomes adult tapeworm when in the
intestines of the final host

A

Cysticercus (Blabber worm)

46
Q

Encysted in the muscle tissues and other organs of host

A

Cysticercosis

47
Q

“flat” and “worm”

A

platys and helmins

48
Q

Scientific Name:
“Blood flukes”

A

Schistosoma spp.

49
Q

Scientific Name:
“Pork tapeworm”

A

Taenia solium

50
Q

Scientific Name:
“Common planarian”

A

Dugesia spp.

BIO044: General Zoology (10 decks)

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