Platyhelminthes

Question 1

Size of Platyhelminthes

Answer 1

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

Question 2

Shape of Platyhelminthes

Answer 2

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

Question 3

Symmetry of Platyhelminthes

Answer 3

Bilateral

Question 4

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

Answer 4

Tegument

Question 5

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

Answer 5

mouth; pharynx; intestine

Question 6

True or False: Platyhelminthes are herbivores

Answer 6

False; carnivorous

Question 7

True or False: Cestodes possess a digestive tract

Answer 7

False

Question 8

____ systems control water balance

Answer 8

Osmoregulatory

Question 9

Flagellated flame cells

Answer 9

Protonephridia

Question 10

Sense organs of Platyhelminthes

Answer 10

Ocelli or eyespots

Question 11

Reproduction of Turbellaria

Answer 11

Asexual (fission) and Sexual reproduction

Question 12

Reproduction of Trematodes

Answer 12

asexual reproduction happens in their intermediate host (snail)

Question 13

True or false: Almost all flatworms are monoecious

Answer 13

True

Question 14

Habitat/s of Class Turbellaria

Answer 14

Marine, freshwater, and terrestrial habitats

Question 15

Differentiate Endoparasites from Ectoparasites

Answer 15

Endo = inside the host; Ecto = outside

Question 16

Least well-known subclass of Trematoda

Answer 16

Subclass Aspidogastrea

Question 17

More well-known subclass of Trematoda

Answer 17

Subclass Digenea

Question 18

First intermediate host of Trematoda

Answer 18

Mollusk

Question 19

Schistosoma that lives primarily in veins draining the large intestine

Answer 19

S. mansoni

Question 20

Schistosoma that occurs mostly in veins of the small intestine

Answer 20

S. japonicum

Question 21

Schistosoma that lives in veins of the urinary bladder

Answer 21

S. haematobium

Question 22

Shelled embryo

Answer 22

Egg

Question 23

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

Answer 23

Miracidium

Question 24

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

Answer 24

Sporocyst

Question 25

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

Answer 25

Cercariae

Question 26

Infective stage (definitive host); encysted stage

Answer 26

Metacercariae

Question 27

Embryo; Pharynx and gut

Answer 27

Rediae

Question 28

usually bears the encysted metacercariae

Answer 28

Second IH

Question 29

Are Monogenea endoparasites or ectoparasites?

Answer 29

Ectoparasites

Question 30

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

Answer 30

Class Monogenea

Question 31

A problematic pathogen in crowded fish farming

Answer 31

Class Monogenea

Question 32

True or False: Class Cestoda are Endoparasites

Answer 32

True

Question 33

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

Answer 33

True

Question 34

True or False: Class Cestoda lack sensory organs

Answer 34

True

Question 35

True or False: Proglottid formation is a true segmentation

Answer 35

False

Question 36

Nearly all cestodes require how many host/s?

Answer 36

Two

Question 37

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

Answer 37

digestive tract

Question 38

Taenia saginata common name

Answer 38

Beef tapeworm

Question 39

Taenia solium common name

Answer 39

Pork Tapeworm

Question 40

Diphyllobothrium latum common name

Answer 40

Fish tapeworm

Question 41

Dipylidium caninum common name

Answer 41

Dog tapeworm

Question 42

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

Answer 42

Scolex

Question 43

Each segment in the strobila of a tapeworm

Answer 43

Proglottid

Question 44

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

Answer 44

Strobila

Question 45

Replication of sex organs

Answer 45

Pseudometamerism