Body Plans
What is an animal body plan?
The way an animal's body is organized.
What is symmetry?
How body parts are arranged around a central axis or plane.
What is a body cavity?
A space inside the body that can hold organs.
What are the three main germ layers?
Ectoderm, mesoderm, and endoderm.
What type of symmetry has two matching sides?
Bilateral symmetry.
What is a pseudocoelom?
A body cavity that is not completely lined by mesoderm.
Which germ layer develops into the skin and nervous system?
Ectoderm.
What type of symmetry has body parts arranged around a center?
Radial symmetry.
What is an acoelomate?
An animal with no body cavity.
Which germ layer develops into the muscles and bones?
Mesoderm.
What type of symmetry is seen in a ball-shaped body?
Spherical symmetry.
Which type of animal has a true body cavity: an acoelomate or a coelomate?
coelomate.
Which germ layer develops into the lining of the digestive tract?
Endoderm.
Humans have what type of symmetry?
Bilateral Symmetry.
Which type of animal has a true coelom: a coelomate or an acoelomate?
A coelomate.