1. What is used by scientists to visualize how morphology explains evolution? A. phylogenetic tree
B. Punnett square
C. pedigree

2. A student reads that Cnidarians have two layers of tissue during development. Which answer describes a possible tissue layer?
A. radial
B. ectoderm
C. deuterostome

3. What does the term cephalization mean?
A. trait in which an animal has repeating body parts able to be specialized for different functions
B. trait in which the nervous system is concentrated in one end, forming a head
C. animal in which the mouth forms second in development

4. What is a deuterostome?
A. animal in which the mouth forms second in development
B. trait in which the nervous system is concentrated in one end, forming a head
C. trait in which an animal has repeating body parts able to be specialized for different functions