Name ____________________ Biology 112 – Quiz (Chapters 32, 34)

Circle the one alternative that best completes the statement or answers the question. (1 point each)

1) As you are on the way to Tahiti for a vacation, your plane crash-lands on a previously undiscovered island. You soon find that the island is teeming with unfamiliar organisms; and you, as a student of biology, decide to survey them (with the aid of the Insta-Lab Portable Laboratory you brought along in your suitcase). You select three organisms and observe them in detail, making note of the following:

Which organism would you classify as an animal?

A) Organism A B) Organism B C) Organism C

2) From an evolutionary perspective, it is more important for an organism to avoid

A) predation B) parasitism

3) Suppose all of the suspension feeders were removed from a lake. What would you expect to happen after some time?

A) The water would become murkier.

B) The water would remain the same.

C) The water would become clearer.

4) Which of the following characteristics would not facilitate a sessile lifestyle?

A) internal fertilization

B) asexual reproduction

C) ability to secrete a poisonous coating

D) feeding on motile prey

5) Which parasites live inside their hosts?

A) ectoparasites B) mesoparasites

C) endoparasites D) none of the above

6) Suppose some alien researchers visited Earth and collected the early ancestor of a phylum, then placed it in a large habitat safe from predation and supplied with abundant food. The aliens maintain this setup for 500 million years. How might this organism evolve over time, compared to how it might have evolved on Earth?

A) It would probably have more diversity of species than it would on Earth.

B) It would probably have a similar diversity of species as it would on Earth.

C) It would probably have less diversity of species than it would on Earth.

7) Which morphological trait evolved more than once in animals, according to the above phylogeny based on DNA sequence data?

A) bilateral symmetry D) segmentation

B) tissue E) coelom

C) protostome development

8) Which reproductive strategy is facilitated by (easier to use in) an aquatic habitat, as compared with a terrestrial habitat?

A) external fertilization

B) sexual reproduction

C) internal fertilization

D) viviparity

E) asexual reproduction

9) What do all deuterostomes have in common?

A) Adults are bilaterally symmetrical.

B) The pore formed during gastrulation becomes the anus.

C) All have specialized head and tail regions.

D) Embryos have pharyngeal pouches that may or may not form gill slits.

E) All have a spinal column.

10) In what respect do humans differ from all other anthropoids?

A) diurnal activity

B) eyes on the front of the face

C) opposable thumbs

D) lack of a tail

E) bipedal posture