Animal Body Development and Platyhelminthes

Which term refers to the absence of a central point or axis?

• Symmetry

• Asymmetry

• Phylogeny

• Ecology

Which term refers to how parts are arranged around a point or axis?

• Symmetry
• Asymmetry
• Phylogeny
• Ecology

Which term refers to a true body cavity?

• Exoskeleton
• Endoskeleton
• Cephalization
• Coelom

Which term of direction refers to the head end?

• Anterior
• Posterior
• Dorsal
• Ventral

The embryo layer that forms the skin and nervous tissue is 

• endoderm

• ectoderm

• mesoderm

• protostome

The animal's digestive tract forms from the

• endoderm

• extoderm

• mesoderm

• protostome

What type of of symmetry does a penny have? 

• bilateral symmetry
• radial symmetry
• no symmetry
• biaxial symmetry

Which of these animals has bilateral symmetry? 

• sponge
• hydra
• jellyfish
• flatworm

Identify this body type.

• Diploblastic
• Coelomate
• Psuedocoelomate
• Acoelomate

This body type is considered a false body cavity.

• Psuedocoelomate
• Coelomate
• Acoelomate
• Triploblast