BILATERIANS - created from Mind Map

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PROTOSTOMES

Protostomes: triploblastic & bilateral symmetry.

– Anterior brain that surrounds the entrance to the

digesJve tract.

– Ventral nervous system with paired or fused

longitudinal nerve cords.

DEUTROSOMES

Anus Develops from Blastopore then mouth.

(Anus first)

• Lophotrochozoans

These have a Lophophore: Circular or U-Shaped ring of hollow cilliated tentacles around the mouth.(Used for food collection and gas exchange

Can rotate their lophophores to increase contact

with prey and can also be retracted.

–Sexual reproducJon: sperm is released into the

water and carried to another individual.

–Eggs are ferJlized & brooded internally, then larvae

are released to find new ahachment sites.

Bryozoans

flatworms

rotifers

Ribbon Worms

Annelids

Brachiopods

Phoronids

mollusks