Plant Biology 102. Spring Quarter 1997.
Sample Quiz 8 -- covers Lectures 21-23.

Part A has all the vocabulary terms listed in the "Terms you should know" section of the lecture manual, but the actual quiz will have a subset of these terms.

A. Natural
Selection
B. PopulationC. Genetic
Variability
D. Selection
Pressure
E. FitnessF. Stabilizing
Selection
G. Directional
Selection
H. Disruptive
Selection
I. Hardy-
Weingberg
Law
J. Morphological
Species
K. Biological
Species
L. Reproductive
Isolation
M. Genetic
Equilibrium
N. PolyploidyO. Gene PoolP. AdaptationQ. Adaptive
Radiation
R. Lineage
S. Convergent
Evolution
T. PhylogenyU. ExtinctionV. Key CharacterW. EvolutionX. Speciation

A. Write the letter of the above listed terms that most closely matches the following statements and questions. (5 pts total @ 1/2 pt each).

_______ 1. Group of interbreeding organisms living in the same region.

_______ 2. A fox eating a rabbit is an example.

_______ 3. The exhange of one trait for another in a population.

_______ 4. Gene frequencies staying the same generation after generation.

_______ 5. Organism who look alike probably belong to the same _____________.

_______ 6. More than two sets of chromosomes.

_______ 7. Change in morphology to succeed in a particular ecological niche.

_______ 8. A group of organisms descending from a common ancestor belong to a _____________.

_______ 9. When unrelated species have nearly identical features because of adaptation to similar environments.

_______ 10. Divergence between populations resulting in the evolution of distinct groups of organisms.

B. True/False (3 pts total @ 1/2 pt each). Write the letter "T" if you agree with the statement and the letter "F" if you do not agree.

_______ 11. Charles Darwin was a physician who practiced medicine in the Galápagos Islands.

_______ 12. Fitness is the rate at which an individual produces offspring who survive to reproduce.

_______ 13. The biological species concept focuses on the physical appearance of organisms.

_______ 14. Populations can have genetic equilibrium if they are experiencing gene flow.

_______ 15. Evolution above the species level involves different processes than what one sees in populations.

_______ 16. The principle mechanism of evolution is natural seleciton.


C. Short Answer (7 pts)

17. (2 pts) Why was the work of Malthus so important to the development of the idea about natural selection?


18. (2 pts) If natural selection, mutation pressure, gene flow and genetic drift are all so important in causing evolution then how can you explain the fact that there are living fossils such as the coelocanth and the gingko tree?





19. (3 pts) Horses don't look very similar to bats and yet they are both mammals. If evolution involves descent from a common ancestor who was also a mammal, why don't horses and bats look more similar to one another?


Answers to parts A & B: 1b, 2d, 3g, 4i or m, 5j, 6n, 7p, 8r, 9s, 10x, 11f, 12t, 13f, 14f, 15f, 16t
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Please send your suggestions, comments, corrections, and/or questions to wolfe.205@osu.edu
Last updated May 23, 1997.