 |
1 | |
A population is best defined as a (an): |
|
| | A) | group of individuals of the same species, living in the same place. |
| | B) | group of species living in the same place. |
| | C) | organisms that interact to produce a trophic structure. |
| | D) | reservoir of carbon. |
| | E) | suitable patch of habitat. |
|
2 | |
Consider a Daphnia population with a population growth rate coefficient (r) of 0.05 per day. This value suggests the population will double in about how many days? |
|
| | A) | 2.0 |
| | B) | 6.9 |
| | C) | 14.0 |
| | D) | 27.0 |
| | E) | 100.0 |
|
3 | |
When Don Hall started his study of the Daphnia population of Base Line Lake, Michigan, he expected he would find that the population growth rate (birth rate) was limited by: |
|
| | A) | the abiotic benthic environment. |
| | B) | food abundance (concentration of algae) and temperature. |
| | C) | predation. |
| | D) | immigration into the lake. |
| | E) | emigration out of the lake. |
|
4 | |
When Don Hall completed his study of the Daphnia population of Base Line Lake, Michigan, he had found that the population growth was limited, during the summer, by which unexpected factor? |
|
| | A) | The abiotic benthic environment. |
| | B) | Food abundance (concentration of algae) and temperature. |
| | C) | Predation. |
| | D) | Immigration into the lake. |
| | E) | Emigration out of the lake. |
|
5 | |
The theory of population dynamics suggests that Daphnia populations, if unlimited by food or predation, are capable of increasing: |
|
| | A) | Exponentially |
| | B) | Logistically |
| | C) | Linearly |
| | D) | Logarithmically |
| | E) | Haphazardly |
|
6 | |
When environmental conditions are optimal, which reproductive strategy results in the fastest rate of reproduction for Daphnia or rotifers? |
|
| | A) | Recruitment from an egg bank. |
| | B) | Sexual reproduction and production of resting eggs. |
| | C) | Binary division. |
| | D) | Asexual parthenogenesis. |
| | E) | A high sex ratio of greater than 50% males. |
|
7 | |
When the growing season is particularly short, as in shallow arctic ponds, which reproductive strategy appears to be of highest priority for Daphnia? |
|
| | A) | A high sex ratio of greater than 50% males. |
| | B) | Asexual parthenogenesis, producing subitaneous eggs. |
| | C) | Binary division |
| | D) | Diel Vertical Migration. |
| | E) | Production of resting eggs. |
|
8 | |
The life history strategy of calanoid copepods is to: |
|
| | A) | alternate resting eggs and subitaneous eggs several times a season. |
| | B) | grow rapidly, feed efficiently by harvesting large amounts of palatable food, and produce relatively large number of offspring. |
| | C) | grow rapidly, feed voraciously on other animals, and produce thousands of offspring. |
| | D) | grow slowly, feed efficiently by choosing individual food particles, and produce relatively few offspring. |
| | E) | produce a few large asexual offspring when prey show cyclomorphic defenses. |
|
9 | |
The life history strategy of Daphnia is to: |
|
| | A) | alternate resting eggs and subitaneous eggs several times a season. |
| | B) | grow rapidly, feed efficiently by harvesting large amounts of palatable food, and produce relatively large number of offspring. |
| | C) | grow rapidly, feed voraciously on other animals, and produce thousands of offspring. |
| | D) | grow slowly, feed efficiently by choosing individual food particles, and produce relatively few offspring. |
| | E) | produce a few large asexual offspring when prey show cyclomorphic defenses. |
|
10 | |
Populations of fish and other organisms that reproduce once a year, and which are near the environment's carrying capacity, can best be modeled by a(n): |
|
| | A) | cohort, age-specific model. |
| | B) | diminishing returns model. |
| | C) | exponential model with a constant "r" value. |
| | D) | inverse death rate model. |
| | E) | Seed Bank model. |
2005 McGraw-Hill Higher Education