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WorksheetsEcology Exam Review
Total questions: 18
Worksheet time: 9mins
Name
Class
Date
1.
Using the graph, determine which statement most likely describes the relationship between the population of organisms and the resources available to the population.
a)
There are adequate resources to support this stable population.
b)
There are adequate resources to support this unstable population.
c)
There are inadequate resources to support this stable population.
d)
There are inadequate resources to support this unstable population.
2.
Assume that 10% of the energy absorbed by one trophic level is transferred to the next successive level and the same amount of energy is available at the primary producer level of each of these food chains.
Food Chain 1:
Phytoplankton-->zooplankton-->smelt-->trout-->humans
Food Chain 2: Phytoplankton-->smelt-->humans
Food Chain 1:
Phytoplankton-->zooplankton-->smelt-->trout-->humans
Food Chain 2: Phytoplankton-->smelt-->humans
a)
10 times less energy
b)
10 times more energy
c)
100 times less energy
d)
100 times more energy
3.
In North America, prairies and deciduous forests have growing seasons of similar length and temperature. Which major factor determines whether a region develops into a prairie or a deciduous forest?
a)
Amount of rainfall
b)
Amount of sunlight
c)
Nutrient content of the soil
d)
Type of animal populations
4.
As John travels by train up a mountain, he observes that the terrain changes from coniferous trees to small shrubs. Which level of organization has most likely remained constant?
a)
Population
b)
Ecosystem
c)
Community
d)
Biosphere
5.
A certain species of protists lives within the intestines of a termite. After the termite chews and swallows wood, providing a usable source of energy for both itself and the termite. The relationship between the protist and the termite is best described as:
a)
Competitive
b)
Mutualistic
c)
Parasitic
d)
Predatory
6.
Zooxanthellae are protists that live inside reef-building coral polyps and provide the corals nutrients. Corals protect zooxanthellae and give them access to light for photosynthesis. When most of the zooxanthellae inside corals die, the corals also die. Zooxanthellae living in closely related corals may be more closely related. Which description of the relationship between zooxanthellae and corals is accurate?
a)
It is a chance relationship that occurs frequently only if both types of organisms exist close together.
b)
It is a chance relationship that occurs frequently because zooxanthellae are common on coral reefs.
c)
It is a symbiotic relationship that most likely evolved on coral reefs in 1 geographic location.
d)
It is a symbiotic relationship that most likely evolved on coral reefs in a number of geographic locations.
7.
An oxpecker is a bird that usually feeds on parasites on a rhino's back. It occasionally picks scabs off the rhino's back and drinks blood from the wounds. Describe the relationship(s) between the oxpecker and the rhino.
a)
Mutualism Only
b)
Mutualism and Predation
c)
Mutualism and Parasitism
d)
Mutualism and Commensalism
8.
Consider the following simple lake food chain:
Algae->Mosquito Larvae->Dragonfly Larvae->Perch->Pike
According to this diagram, which of these organisms is a tertiary consumer?
Algae->Mosquito Larvae->Dragonfly Larvae->Perch->Pike
According to this diagram, which of these organisms is a tertiary consumer?
a)
Pike
b)
Perch
c)
Dragonfly Larvae
d)
Mosquito Larvae
9.
If a football field in the Taiga is abandoned, which group of organisms will most likely be part of the resulting climax community?
a)
Apple tree, deer, and wolf
b)
Cactus, snake, and hawk
c)
Grass, mouse, and coyote
d)
Pine Tree, moose, and bear
10.
What type of growth is reflected in this population growth graph?
a)
Exponential
b)
Arithmetic
c)
Logistic
d)
Psychological
11.
What type of growth is reflected in this population growth graph?
a)
Exponential
b)
Arithmetic
c)
Logistical
d)
Psychological
12.
Starting from the bottom of a food chain, what order would accurately represent the amount of energy in a desert food chain including a hawk, cactus, snake, and insect?
a)
hawk, snake, insect, cactus
b)
cactus, hawk, snake, insect
c)
cactus, insect, snake, hawk
d)
insect, snake, cactus, hawk
13.
Based on the graph (think of mosquitoes), one can assume that the population growth reflects that of an organism that:
a)
Has slow reproductive rate and stable population
b)
Has fast reproductive rate and a stable population
c)
Has slow reproductive rate and an unstable population
d)
Has a fast reproductive rate and an unstable population
14.
Collectively, all the biotic and abiotic components in a particular area are best described as which of the following:
a)
Community
b)
Ecosystem
c)
Niche
d)
Population
15.
When a new volcanic island forms, the pioneer species are the first species to successfully colonize the island. Which of the following characteristics would be the most advantageous to a pioneer species colonizing this newly formed island?
a)
low dispersal rate
b)
narrow environmental tolerance
c)
high reproductive rate
d)
long generation time
16.
John places 1 bacterium in a Petri dish at time ). The population increases exponentially, doubling every hour, and there are no limiting factors. How many bacteria will be in the Petri dish after 6 hours?
a)
6
b)
16
c)
32
d)
64
17.
The graph represents the average fastest speed of 5 animals recorded in one study.
Based on the graph, which species is approximately 1/3 as fast as the cheetah?
Based on the graph, which species is approximately 1/3 as fast as the cheetah?
a)
Elephant
b)
Kangaroo
c)
Lion
d)
Snake
18.
An ecologist measured the change in the mass of decomposing plant material using the appropriate SI (International System of Units) unit. The unit that the ecologist most likely used to measure the mass was:
a)
day
b)
kilogram
c)
liter
d)
pound
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