Platyhelminthes

What are the four classes of platyhelminthes?

Turbellaria, Trematoda, Monogenea, Cestoda

To which class to Planaria belong?

Turbellaria

To which class do Parasitic flukes belong?

Trematoda

To which class do external parasites of fish belong?

Monogenea

To which class do tapeworms belong?

Cestoda

Where do tapeworms live in their adult form?

Intestines of mammals

What is the body shape of a cestoda?

Flattened, Segmented

What contain full monoecious reproductive systems in cestoda?

Proglottids

From which uncooked meat(s) can you get a tapeworm?

Pork, Beef

What do Monogenea infect?

Fish

Where does the larval form of Monogenea inhabit?

Aquatic Environments

What are the 5 adaptations for parasitism present in Trematoda?

Penetration glands, Glands to make cysts, Hooks and suckers for adhesion, Tough tegument to protect from digestive enzymes Increased reproductive capacity

What type(s) of reproduction do Trematoda undergo and in which host(s)?

Sexual, Intermediate (Sheep), Asexual, Difinitive host (humans)

Do planarians have regenerative abilities?

Yes, if cut in half

Internal fertilisation occurs in all classes except for which?

Turbellaria

Which of the classes is/are non parasitic?

Turbellaria

How many hosts do Trematoda have?

2

How many hosts do Cestoda have?

2

How many hosts do Monogea have?

1

What type of body cavity do Platyhelminthes have? (Acoelom, Pseudocoelom or a true coelom)

Acoelom

Where is the pharynx of a Turbellarian?

Midway down the body

What is the main process of the excretory system of platyhelminthes?

Diffusion

What is the secondary method of nitrogenous waste excretion of platyhelminthes, mainly used for osmoregulation?

Excretion via protonephridia

Descrive the digestive system of platyhelminthes?

Gastrovascular cavity

Describe the digestive system of Cestoda?

Non-existent

Are Platyhelminthes diplo or triploblastic?

Triploblastic

What are the visual sense organs of platyhelminthes?

Eyespots

What are the components of the flatworm nervous system?

Paired ganglia, longitudinal nerve cords

What do the respiratory and circulatory system of platyhelminthes rely on?

Diffusion

Where are flame cells located?

Protonephridia