Question

5. The animals of which phylum use a water vascular system in locomotion, feeding and gas exchange? a) Echinodermata b) Mollusca c) Arthropoda d) Chordata

6. As N (population size) approaches K (carrying capacity) for a certain population, which of the following is predicted by the logistic equation? a) The growth rate will not change. b) The growth rate will approach zero. c) The population will increase exponentially. d) The carrying capacity of the environment will increase.

7. A type III survivorship curve (with high initial mortality) is exhibited by a) humans. b) birds. c) crustaceans. d) oysters.

8. A mark-recapture study would be a good way to find out how many a) queens live in a beehive. b) cubs that black bears in Minnesota are likely to produce. c) pine trees are growing in a forest. d) fish live in a lake.

9. If two species of seed-eating finch colonized an island on which there were seeds of only one size, what would Gause’s principle of competitive exclusion predict? a) The finches would hybridize and become one species. b) One finch would evolve smaller beaks and the other would evolve larger beaks. c) One of the finch species would probably disappear from the island. d) The plants would evolve seeds of different sizes.

10. Müllerian mimicry is when a) a harmless species imitates a harmful species. b) two or more unpalatable species mimic each other. c) a harmful species imitates a harmless species. d) two harmless species imitate each other.

Answer 1