Platyhelminthes

How does mesoderm form in protestome

Mitotic division from ectoderm ultimately form 2 layers that separate and form mesodermal eventually

How does mesoderm form in deuterostome

Mesoderm tissue is extension of endoderm

1st lineage from protostome

Lophotrocozoan

What is lophopore

Hox genes that collagen ring of cillia in adult protostome

What are trophopolic larvae

Ring of cilia in larvae allows them to move

Lopohotorocozoan have

tropophoric larvae or lophopore

What does mollusk have

Only trophopic larvae

What does lophotrocozoa include

Platyhelminthes annelida mollusca rotifera

What’s one lineage of lophotrocozoa

Platyhelminthes

What is Platyhelminthes include

Flatworm

Body cavity of Platyhelminthes (flat worm)

Acoelomate

How is Platyhelminthes (flat worm) segmented

Not segmented

How many tissue layer and body cavity in Platyhelminthes (flat worm)

Triploblastic

No body cavity

Where are Platyhelminthes (flat worm) found

Aquatic terrestrial environment

What does flat shape of Platyhelminthes (flat worm) allow

High surface areas to volume ratio

Absorption of matter is easier

Breathe through skin

How are reproductive body part arranged in Platyhelminthes (flat worm)

Hermaphroditic

they Fight over who will be male or female

Two sister taxa of Platyhelminthes (

Tubullaria

Neodermata

Which is free living Platyhelminthes )

Tubullaria

Example of Tubullaria

Planarian

What is parasitic Platyhelminthes

Neodermata

Whst is Outgroup of Neodermata

Trematode

What is sister taxa of neodermata

Cestoda and

Monogenea

What is trematode known as

Fluke

Almost all parasitic for humans

Trematode

Get into open wound

Blood fluke

What is monogenean

ecoparasite-

gets into fish gills - coats fish gill

What is cestoda aka

Tapeworm

What is cestoda

Affects mammals through contaminated water

How does Cestoda work

Form says to get in the intestines and absorbs nutrients

What is another group of lophotrocozoa

Mollusca

What does Mollusca include

Squid bivalve slug