Animal development and dissection

What do vertebrates have that invertebrates do not?

• Brain

• Specialized cells

• Backbone (spine)

• Nerve cord

Which animal phylum contains vertebrates? (choose 1)

• Chordata

• Annelida

• Echinodermata

• Arthropoda

Which animal phyla have radial symmetry at some point in their life cycle? (choose 2)

• Cnidaria

• Nematoda

• Echinodermata

• Arthropoda

What is the key developmental difference between protostomes and deuterostomes?

• What the blastopore develops into

• Whether it has a mouth or anus

• Whether it has a true coelom

• Whether it has 2 or 3 germ layers

What is the first embryological opening on an animal called?

• blastula

• coelom

• blastocyst

• blastopore

Which correctly describes a difference between protostomes and deuterostomes?

• protostomes only have a mouth, deuterostomes only have an anus

• protostomes only have an anus, deuterostomes only have a mouth

• blastopore develops into mouth in protostomes, into an anus in deuterostomes

• blastopore develops into an anus in protostomes, into a mouth in deuterostomes

How do diploblastic animals differ from triploblastic animals?

• diploblastic animals lack the endoderm germ layer

• diploblastic animals lack the mesoderm germ layer

• diploblastic animals lack the ectoderm germ layer

• diploblastic animals have an extra mesoderm germ layer

What is the symmetry of the starfish (sea star)?

• bilateral

• radial

• asymmetry

Which type of symmetry divides the organism with one plane to produce two equal halves?

• Asymmetry

• Bilateral

• Radial

Cephalization is the concentration of what type of tissue?

• nervous

• circulatory

• respiratory

• muscle