Biology Final Part 2
Terms in this set (45)
1. A population consists of a group of organisms
Of the same species living in a specific geographic area that have the potential to interbreed
2. Which statement below represents changes in people's worldview after Darwin published The Origin of Species?
a. Organisms change and adapt over time
3. Evolution occurs
a. Only via natural selection, genetic drift, migration, or mutation.
4. Evolution is defined as
a. A change in the frequency of alleles in a population over time
5. Errors sometimes occur when DNA duplicates itself. Why might that be a good thing?
a. New genes can enter the population and be acted upon by evolution.
6. In a particular population, over the course of several dozen generations, an adenine was replaced by a guanine at a particular non-coding locus in the DNA base sequence. The evolutionary mechanism responsible for this change was
7. In a fish population in a shallow stream, the genotypic frequency of yellowish-brown fish and greenish-brown fish changed significantly after a flash flood randomly swept away individuals from that stream. This change in genotypic frequency is most likely attributable to
8. Genetic drift will have the greatest effects for populations
a. That are very small
9. The migration of reproductive individuals between populations results in a movement of alleles called
10. To demonstrate evolution by natural selection, all of the following conditions must be satisfied EXCEPT
Low environmental variation
11. Many mosquito populations today are resistant to pesticides that were historically effective. This pesticide resistance arose in these populations because
a. Some individuals were resistant to the pesticides before they were used, and those mosquitos were more likely to survive and reproduce.
12. The most ancient branching point in the phylogeny of animals is the one that distinguishes between having
True tissues or no tissues
13. Sponges of the phylum Porifera are sessile, meaning that they
a. Live attached to a solid structure and do not move around
14. Which animal phylum lacks true tissues?
a. Porifera (sponges)
15. All cnidarians have tentacles that are armed with rows of stinging
16. Many people are initially repulsed by leeches. But after some study, you can find that you actually begin to feel some affection for them. And they, in turn, become attached to you. Leeches are in the phylum
17. You are eating in a French restaurant and read that snails are on the menu. Being a knowledgeable biologist, you kindly inform the other members at the table that this restaurant is serving ______ class of Mollusks.
18. All arthropods have
a. A chitinous exoskeleton and jointed appendages
19. Which four features do humans share with tunicates?
a. Notochord; dorsal hollow nerve cord; pharyngeal slits in the embryonic stage; a post-anal tail in the embryonic stage.
Sharks have ______ skeletons, whereas salmon have ________ skeletons
a. Cartilaginous; bony
21. Which came first, the chicken or the egg?
a. The egg, because the amniotic egg evolved well before the first bird
22. Birds are _______, whereas turtles are __________.
23. The diagram below depicts the life cycle of a
24. The right side of the diagram of a moss life cycle below represents
the diploid stage
25. Both mosses and ferns must have freestanding water present (water droplets, for example) in order to fulfill their requirements for fertilization. Which of the following choices is the most likely explanation for why this would be?
a. Both mosses and ferns have motile male gametes that require water to travel to the female gametes.
26. The evolution of seeds allowed
a. Plants to colonize dryer climates
27. The common term for the action of transferring pollen grains from an anther onto a stigma is
28. The female parts of a flower are the
Stigma, style, ovary, and ovule
29. Which of the following is NOT an example of an angiosperm?
30. All of the following floral parts are directly involved in pollination or fertilization except the
31. A plant that has flowers with no petals is most likely to be pollinated by
32. The cell wall of fungi is made of
33. The threads that make up the mycelium of a fungal body are called
34. Dispersal of fungal spores is typically done by
35. _________ are mutualistic fungi that help to provide nutrients to trees, shrubs, and other plants.
36. "Ecology" is best defined as the study of
a. The relationships between all living organisms and their environments
37. On average, which leaves more offspring that survive to become adults and reproduce: a pair of elephants or a pair of rabbits?
a. If both populations are stable, then the pair of elephants and the pair of rabbits will leave the same number of offspring that survive to become adults and reproduce.
38. Which of the following is NOT an example of a density-dependent limiting factor that will influence carrying capacity?
39. When plants of a particular species are growing too close to each other, crowding may eventually lead to mortality, known as self-thinning. This type of mortality is
40. In the graph below, curve A is the ______ and curve B is the ______.
a. Exponential growth curve, logistic growth curve
41. The lynx-snowshoe hare population dynamic pictured below represents an example of population
42. The set of curves depicted below are called
a. Survivorship curves
44. In the age pyramids depicted below, the country on the left could be _______, while the country of the right could be __________.
a. Norway; Kenya
43. Mutations that cause sickness and death after reproduction
a. Can be passed on to future generations
45. Approximately what is the current size of the human population?