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ZOOLOGY (LABORATORY) > BIO044 (LAB) MOD 9 PLATYHELMINTHES (FLATWORMS) > Flashcards

BIO044 (LAB) MOD 9 PLATYHELMINTHES (FLATWORMS) Flashcards

1
Q

Are known as the flatworms:

A

Phylum Platyhelminthes

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2
Q

Parasitic flatworms are known as:

A

Flukes and tapeworms

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3
Q

Exhibit many advances over the cnidarians.

A

flatworms or Phylum Platyhelminthes

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4
Q

flatworms or Phylum Platyhelminthes are:

A

Triphoblastic:
Ectoderm
Endoderm
Mesoderm

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5
Q

Phylum Platyhelminthes are best characterized by having a:

A

Dorsoventrally flattened body. Also, bilaterally symmetrical.

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6
Q

Phylum Platyhelminthes, internally they do not have a body cavity:

A

Acoelomate

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7
Q

The Platyhelminthes is the simplest phylum of animals that has now developed an:

A

Organ-system level of complexity

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8
Q

but it is still classified under:

A

Tissue-organ level

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9
Q

is composed of many protonephridia

A

Excretory system

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10
Q

Flatworms always practice:

A

cross-fertilization

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11
Q

Phylum Platyhelminthes first phylum in which there is a distinct head with:

A

sense organs and central nervous system (cephalization)

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12
Q

They have a primitive brain known as the:

A

cerebral ganglia

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13
Q

4 class under Phylum Platyhelmithes:

A
  • Class Turbellaria
  • Class Monogenea
  • Class Cestoda
  • Class Trematoda
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14
Q

1 group that is free-living

A

Class Turbellaria

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15
Q

1 group that is parasitic in fishes

A

Class Monogenea

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16
Q

2 groups that are internal that are parasites of man and domestic animals.

A

Class Trematoda and Class Cestoda

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17
Q

An organism that supports the immature form of the parasite.

A

Intermediate host

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18
Q

An organism where the parasite can reach maturity and may develop sign of disease.

A

Final/ Definitive host

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19
Q

Class Turbellaria the specimen will be:

A

Dugusia spp.

20
Q

Class Turbellaria:

A
  • Ciliated epidermis
  • Auricles
  • Ocelli
  • Mouth
  • Gonopore/ Genital pore
21
Q

Helps the planarian grip on surfaces and retain moisture.

A

Ciliated epidermis

22
Q

The ear-like flaps at the side of the head have a tactile function that helps the planarian feel its surrounding.

A

Auricles

23
Q

Ocelli

A

The 2 black eyespots.

24
Q

Located at the ventral middle part of their body.

A

Mouth

25
Q

A small opening that lies just beneath the mouth.

A

Gonopore/Genital pore

26
Q

Small pores found all over the ventral side of their body.

A

Excretory pores

27
Q

Flattened, elongated, or leaf-like body.

A

Class Trematoda

28
Q

Class Trematoda, the specimen will be:

A

Fasciola hepatica or Fasciola gigantica

29
Q

An unciliated epidermis that is tougher and resistant to digestive juices of host.

A

Syncytial tegument

30
Q

Found on the anterior end of their body.

A

Mouth

31
Q

Located around the mouth, it helps them hold on to hosts tissue while consuming at the same time.

A

Oral Sucker

32
Q

(Acetabulum) The larger sucker found on the ventral middle part of their body.

A

Ventral Sucker

33
Q

A small opening that lies just in between the oral and ventral sucker.

A

Genital pore

34
Q

A single small opening found at the posterior end of the body. It is where metabolic waste and water are released.

A

Excretory pore

35
Q

Class Cestoda, the specimen will be:

A

Taenia solium or Monieza expansa

36
Q

An unciliated epidermis that is tougher and resistant to digestive juices of host.

A

Syncytial tegument

37
Q

The first segment of the tapeworm (not the head).

A

Scolex

38
Q

The segmented body of a tapeworm.

A

Strobilla

39
Q

Each segment is called a:

A

Proglottid

40
Q

An individual reproductive unit.

A

Proglottid

41
Q

Segments closer to the scolex are called:

A

Immature proglottids

42
Q

Segments further away called:

A

mature proglottids

43
Q

The distal-most segments are called:

A

gravid proglottids

44
Q

this is small opening where sperm is exchanged and eggs are released.

A

Gonophore

45
Q

This refers to a crown of hooks found in the scolex of some tapeworms.

A

Rostellum

46
Q

This refers to the larger sucker in the ventral surface of flukes.

A

Acetabulum

ZOOLOGY (LABORATORY) (13 decks)

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