Download Interactions of Life Practice Test 2011 Answer Section

Interactions of Life Practice Test 2011
Multiple Choice
Identify the choice that best completes the statement or answers the question.
Vocabulary
____
1. The largest number of individuals of one species that an ecosystem can support over time is its
a. carry capacity
c. competition limit
b. limiting factor
d. sample count
____
2. Comparing the population of a square mile in Morehead with the population in a square mile in New York
City would be an example of population _______________?
a. clumping
c. spacing
b. size
d. density
____
3. All organisms of the same species living in an area at the same time make up a(n)
a. community
c. ecosystem
b. population
d. habitat
Applying Vocabulary
____
4. A drought condition affects an area. Lack of rain is __________ of that area's organisms.
a. an adaption
b. a limiting factor
____
c. the community
d. the carrying capacity
5. A population of wolves lives in a region with plenty of food, water, and living space. Which of these
is true?
a. The wolf population will become
carnivores.
b. The wolf population has excellent biotic
potential
____
6. Which of the following is not a heterotroph?
a. mushrooms
b. cow
c. The wolf population lives in a poor
habitat.
d. The wolf population will experience less
competition within their own species.
c. grass
d. wolf
____
7. What type of population growth is influenced only by the birth rate?
a. exponential
b. logistic
____
8. The major source of energy for most ecosystems is
a. producers
c. sun
b. consumers
d. soil
Predicting Changes in Populations
____
9. Which of the following conditions tends to increase the size of a population?
a. births exceed deaths
c. movements out of an area exceed
movements into the area
b. population size exceeds carrying capacity d. severe drought
Food Web
____ 10.
Which of the organisms in the diagram compete for the same food source?
a. deer and snake
b. eagle and mouse
c. owl and deer
d. fox and snake
Suppose that naturalists catch, tag, and release 50 deer in a forest. After allowing time for the tagged deer to
mix with the others, they catch a sample of 100 deer, 10 of which have tags. Answer the questions that
follow using the information above.
Estimate of Total Population = (total number captured) x (number marked)
total number recaptured with mark
____ 11. How many deer were marked originally?
a. 50
b. 100
c. 10
d. 150
____ 12. Estimate the number of deer in the forest using the formula from above.
a. 10
c. 100
b. 50
d. 500
Random Sample 2
Scientists mark off a 3 x 5 grid in a field of sunflowers. Scientists then conduct a random sample of 3
squares in the field. The results are in the table below.
15
19
11
____ 13. What is the mean of the sample?
a. 15
b. 25
c. 45
d. 125
____ 14. The population estimate based on the random sample is ______.
a. 15
c. 125
b. 25
d. 225
____ 15. According to the graph, as the number of aphids (prey) increases, what happens to the number of predators a
short time later?
a. predators increase
c. predators stay the same
b. predators decrease
d. predators are not affected by prey
____ 16. According to the ladybug/aphid graph, as the number of predators increases, what happens to the number of
prey?
a. prey increases
c. prey stays the same
b. prey decreases
d. prey is not impacted by the numbe of prey
____ 17. In the pyramid, which of the following organisms would belong in part D?
a. fern
c. grass
b. mouse
d. both a and c
____ 18. In the pyramid, which of the following would belong in position B?
a. carnivore
c. producer
b. herbivore
d. carnivore of carnivores
____ 19. In the pyramid, the primary consumer would belong in which position?
a. A
c. C
b. B
d. D
Population Methods
____ 20. Which of the following is not a method of measuring population?
a. actual count
c. sample count
b. trap and hold
d. trap-mark-release
Types of Organisms
____ 21. Dead plants at the bottom of a pond are consumed by
a. omnivores
c. carnivores
b. herbivores
d. decomposers
Population Graph curves and questions
____ 22.
According to the graph, what is the carrying capacity for the rabbits?
a. 60
c. 55
b. 65
d. Not enough information
____ 23. According to the graph, during what month did the rabbits experience exponential growth?
a. May
c. August
b. June
d. September
____ 24. On a graph, when logistic growth occurs, it takes the shape of a _______________?
a. straight line
c. letter S
b. letter J
d. letter U
____ 25. Which of the following is not part of an organism’s niche?
a. how it digests food
c. how it finds a mate
b. how it avoids danger
d. how it obtains shelter
____ 26. Which of the following conditions tends to increase the size of a population?
a. births exceed deaths
c. movements out of an area exceed
movements into the area
b. population size exceeds carrying capacity d. severe drought
Matching
a. limiting factor
b. biotic potential
c. competition
d. carrying capacity
e. predation
____ 27. An example of this relationship would be a bird eating a worm for energy..
____ 28. The maximum number of individuals that an area can support or maintain.
____ 29. The maximum number of offspring that an organism can produce under ideal conditions.
____ 30. When animals, especially from the same species, need the same resources.
Interactions of Life Practice Test 2011
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
A
D
B
B
B
C
A
C
A
D
A
D
A
D
A
B
D
A
C
B
D
B
B
C
A
A
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
PTS:
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
E
D
B
C
PTS:
PTS:
PTS:
PTS:
1
1
1
1
MATCHING
27.
28.
29.
30.
ANS:
ANS:
ANS:
ANS: