Lophotrochozoa I

What is Bilateria?

They are animals with bilateral symmetry and three germ layers.

What type of symmetry do bilaterians have?

They have bilateral symmetry (left and right sides).

What are the two major groups within Bilateria?

The two major groups are Protostomes and Deuterostomes.

What is the main developmental difference between protostomes and deuterostomes?

In protostomes the blastopore becomes the mouth, while in deuterostomes it becomes the anus.

What is the superphylum Lophotrochozoa?

Lophotrochozoa is a major protostome superphylum.

What are two defining features often found in Lophotrochozoa?

They often have a lophophore (feeding structure) or trochophore larva.

What phylum do flatworms belong to?

Flatworms belong to Phylum Platyhelminthes.

What are rotifers part of (which phylum/group)?

Rotifers are part of Phylum Rotifera (within Syndermata).

What are acanthocephalans commonly known as?

Thorny-headed worms.

What are the three germ layers found in bilaterians?

Ectoderm, mesoderm, and endoderm.