Animal Phylogeny

Review Questions

Consulting the modern phylogenetic tree of animals, which of the following would not constitute a clade?

  1. deuterostomes
  2. lophotrochozoans
  3. Parazoa
  4. Bilateria

Hint:

C

Which of the following is thought to be the most closely related to the common animal ancestor?

  1. fungal cells
  2. protist cells
  3. plant cells
  4. bacterial cells

Hint:

B

As with the emergence of the Acoelomorpha phylum, it is common for ____ data to misplace animals in close relation to other species, whereas ____ data often reveals a different and more accurate evolutionary relationship.

  1. molecular : morphological
  2. molecular : fossil record
  3. fossil record : morphological
  4. morphological : molecular

Hint:

D