Animal Kingdom Flashcard #1

Front

What is the third cell layer formed in the developing embryo?

Back

Mesoderm

Front

What is another word for backbone?

Back

Vertebral column

Front

What is a fluid-filled body cavity, completely enclosed by mesoderm, that lies between the digestive cavity and body wall?

Back

Coelom

Front

What is a non-bony skeleton that forms on the outside of the body?

Back

Exoskeleton

Front

Which of the following organisms is asymmetrical?

Back

Organism b

Front

What is the outermost layer of cells in an embryo called?

Back

Ectoderm

Front

What type of symmetry is characterized by having no symmetry?

Back

Asymmetry

Front

What is the term for animals with a backbone?

Back

Vertebrates

Front

What is the term for animals without a backbone?

Back

Invertebrates

Front

What is the name of the process by which an embryo develops three layers of cells?

Back

Gastrulation