Biology 181 Review 3
Terms in this set (59)
1. The observation that members of a population are uniformly distributed suggests that
A. the size of the area occupied by the population is increasing
B. resources are distributed unevenly
C. the members of the population are competing over territorial resources
D. the members of the population are neither attracted to nor repelled by one another
E. the density of the population is low
C. The members of the population are competing over territorial resources.
2. The net primary productivity for a temperate forest is measured at 2100 g/m2/day. The respiratory rate of the
community is 600 g/m2/day. The gross primary productivity for this community is
A. 1500 g/m2/day
B. 1700 g/m2/day
C. 2700 g/m2/day
D. 3200 g/m2/day
E. 4200 g/m2/day
3. All of the following kinds of plants or animals characterize a climax community EXCEPT
A. species with slow developing young
B. species that invest large amounts of resources into their offspring
C. K - selected species
D. species with poor dispersal ability
E. species that can tolerate poor and disturbed habitats
E. Species that can tolerate poor and disturbed habitats.
4. Some birds follow moving swarms of army ants in the tropics. As the ants march along the forest floor hunting insects
and small vertebrates, birds follow and pick off any insects or small vertebrates that fly or jump out of the way of the ants.
The interaction between birds and ants is an example of what kind of species interaction?
A. commensalism D. parasitism
B. consumption E. mutualism
5. Which of the following is the most powerful on a per molecule basis?
A. CO2 B. methane
6. Suppose the warming of the Earth caused the oceans to absorb more carbon dioxide from the
atmosphere than they do at lower temperatures. This occurrence would act as a _____.
A. positive feedback loop, decreasing the temperature of the Earth
B. positive feedback loop, increasing the temperature of the Earth
C. negative feedback loop, increasing the temperature of the Earth
D. negative feedback loop, decreasing the temperature of the Earth
D. Negative feedback loop, decreasing the temperature of the earth.
7. A population of 250 rabbits are introduced to a forest. The population's birth rate is 0.432 rabbits/year, and the death
rate is 0.310 rabbits/year. What is the rate of population growth?
8. Calculate the annual growth rate (r) in a population of 10000 individuals if per year there is a birth rate of 420, a
death rate of 110, 108 immigrants, and 93 emigrants.
9. If a population of skunks is currently 10 individuals, and rmax=3 skunks/month, predict the population size after
two months if these skunks grow exponentially.
10. What is the doubling time of a population with a birth rate of 25 (per 1000) and a death rate of 18 (per 1000)?
11. What is competitive exclusion?
A. the evolution of traits that reduce niche overlap and competition
B. the degree to which the niches of two species overlap
C. the claim that two species within the same niche cannot coexist
D. when two members of the same species compete for a limited resource
C. The claim that two species within the same niche cannot coexist.
12. Under which of the following conditions would you expect the fundamental and realized niches of a
species to be the same?
A. when there is intense interspecific competition C. when there is no interspecific competition
B. when there is intense intraspecific competition D. when there is no intraspecific competition
C. When there is no interspecific competition.
13. Which of the following is having a positive impact on octopi population numbers off of Mexico?
A. Coke cans C. increasing sponge densities
B. abalone population densities D. decreased human presence in the area
A. Coke cans
14. How could crows dropping nuts at crosswalks in a city be explained as observational learning?
One crow SAW another crow doing this and copied him.
15 How could crows dropping nuts at crosswalks in a city be explained as insight learning?
Crow put PREVIOUS knowledge together to solve the problem.
16. At what point in an individual's life is imprinting most likely to occur?
early in life
21. Divergence in morphology that is a result of competition is termed
A. competitive exclusion
B. ecological niches D. character displacement
C. resource partitioning E. mutualism
D. Character displacement.
23. Elizabeth Guillette looked at two groups of farmers and their families in a region of Mexico. One group lived in the
valley and used pesticides heavily, and the other in the foothills where they did not use pesticides. She found the many
differences in the children from these two groups. Which of the following is NOT one of the differences she
A. balance E. coordination
B. memory F. energy levels
D. IQ scores
D. IQ scores
29. Removing the bark from a strip all the way around a tree can kill the tree. Which TWO of the following answers
A. the tree can no longer transport water up from the roots
B. phloem is removed
C. the roots will starve
D. xylem is destroyed
B. Phloem is removed
C. The roots will starve
30. Where does an unusually large portion of discarded plastic ultimately end up?
G. temperate deciduous forest
H. tropical rain forest
M. temperate grassland
31. gymnosperms abundant
32. dense closed canopy layer
H. Tropical rain forest.
33. near the equator, great species diversity
H. Tropical rain forest.
34. plants with trichomes
35. moose, lichen in climax community
36. four distinct seasons
G. Temperate deciduous forest
37. wildfires common
38. Northern Africa
39. nocturnal Fennec foxes
40. lots of farmland
M. Temperate grassland
41. maple and oak trees
G. Temperate deciduous forest.
42. nutrient-rich breeding ground
43. constantly moving water
B. Lotic (river)
45. Which of the following would most likely NOT play a part in determining the above carrying
D. vegetation abundance
E. habitat size
46. The growth curve shown most closely resembles
A. exponential growth
B. fluctuating growth
C. r-selected growth
D. logistic growth
E. zero population growth
D. Logistic growth.
47. Transpiration is the cohesion/attraction of water molecules to each other.
48. The cohesion-tension theory explains the movement of materials through the phloem.
49. Phloem is made of living cells.
50. As a result of global warming, primary productivity worldwide is increasing.
51. Ectothermic animals like fish and reptiles have higher production efficiencies than do endothermic animals like deer
52. A ruminant may regurgitate and chew the same cud 6-7 times.
53. What is the major limiting factor on aquatic primary productivity?
Light/depth and nutrients
54. Which digestive chamber of a ruminant is most like the monogastric stomach?
55. Which of the ruminant digestive compartments is responsible for forming the cud, and regurgitating
it if necessary?
56. Why is it important that the small intestine has a much greater surface area than the stomach or
Most absorption of nutrients happens in small intestine.
57. Suppose a carnivorous species slowly evolves to become herbivorous. Give an example of a change in
the digestive system that you would expect to see.
Additional digestive chamber or
organs,enlarged cecum, greater
microbial populations in gut,
65. In which organ (#) would you expect to find the largest population
of symbiotic bacteria?
5. Large Intestine
66. Which TWO #s are sites of both mechanical and chemical digestion?
1,3. Mouth and stomach
67. Which organ (#) secretes pepsin?
68. Which # is the largest gland in the body?
69. Which # releases its product into the cystic duct?
8. Gall Bladder
**1 What is the current world human population (approximately)?
**2 Why did one group of mice gain much more weight than another group, even though both were fed the same diet?
They ate when they should have been sleeping.
**3 Rats will die after 2 weeks if deprived of what exactly?
**4 Which invasive species was brought over because of a Shakespearean play?
**5 Why are zebras not considered an aposematic species, but skunks are?
They arent advertising a toxin, but disrupting coloration to blend in.
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