Lophophorates Flashcards
Give the 3 key subgroups of this phyla.
Phronidia (Horse shoe worms)
Ectoprocta (Bryozoans)
Brachiopoda (Lamp shells)
Give the habitat of Phronidia.
Marine, Benthic (bottom of water column)
Give the habitat of Ectoprocta
Aquatic
Sessile
Colonial (join with other organisms)
Give the key features of Phronida
Fine tentacles, make up Lophophore.
On apical surface
Cilia drive nutrients to the mouth (centre of L)
Vision enables retraction of L
What are the key features of the Lophophorates ?
All have a Lophophore,
A feeding organ, a ring of ciliated tentacles around the mouth.
What are Ectoprocta ?
A collection of animals which join to produce a moss like structure
Where are ectoprocta commonly found ?
On the hull of ships, can lead to the destruction of the hull over time.
What do Ectoprocta feed on ?
Filter feed nutrients in the water
Parasitize other organisms.
What is a zooecium ?
A calcareous ‘box’ which ectoprocta can retract into. closing the Operculum for protection.
What is the benefit to a Ectoprocta of joining with other Ectoproctas ?
Create Excurrent chimneys by all co-ordinating cilla
Enables more water to be filtered, increasing food supply.
Where is the Lophophore found within the Brachiopoda ?
Within the shells, which open to enable water flow for feeding
How many shells do the brachiopoda have ?
2 Shells
Dorsal and Ventral
What is the function of the pedicle in a brachiopoda ?
Enables attachment of the brachiopoda to the substrate.
What clade where the lophotrocozoans originally thought to belong to ?
The Deuterostomes, now classed as Lophophorates.
