Exam 30: Animal Origins and the Evolution of Body Plans

Refer to the table, which compares 27 amino acid positions for ten different species. What is the phylogenetic significance of character state 11 for the earthworm?

Which of the following are not eumetazoans?

Which of the following is not a feature of the sponges?

Refer to the figure. Which best describes the segmentation shown in the part B of the figure (the scorpion)?

Which of the following would not be an example of segmentation related to movement or feeding?

Which characteristic distinguishes sponges from all other animal groups?

Which statement about pseudocoelomate animals is true?

A predatory animal such as a wolf would have all of the following body plan characteristics except

Which statement about endoparasites is true?

Which of the following feeding strategies is most likely to be associated with a sessile organism?

Placozoans are structurally simple.They have no mouth, gut, or nervous system and only a few distinct cell types.This simplicity it thought to be secondarily derived, because they

An animal that produces toxins is most likely a(n)

_______ symmetry is strongly correlated with cephalization, which is the development of sense organs and central nervous tissues at the anterior end of an animal.

Refer to the figure. Which statement about the two forms shown is false?

Nematocysts are

Cnidarians typically have two body forms: one asexual and the other sexual.The sexual form is the _______, and it differs most from the asexual form in being _______.

Which of the following characteristics are common to both animals and fungi?

Which of the following statements about sponges is false?

Corals are able to survive in nutrient-poor tropical waters by forming symbiotic relationships with photosynthetic

Which trait(s) is/are not shared by all animals?