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Ecology, Succession And Ecosystems
Test Description: Study guide for Ecology Test
Instructions: Answer all questions to get your test result.
1) Which of the following is an example of a community?
A
All the grass in a meadow
B
All the animals in North America
C
All the organism living in a lake
D
All the geese in the world
2) The process by which the volcanic island Surtsey has progressed from bare lava in 1963 to an island with vegetation and animal life today is known as
A
A climax community
B
secondary succession
C
primary succession
D
An extinction event
3) On the African savanna, large herbivores such as elephant and giraffe would be found in
A
Trophic Level C
B
Trophic Level D
C
Trophic Level A
D
Trophic Level B
4) Most climate models predict that during this century, the average temperature
A
on land will decrease, as will the average ocean temperatures
B
on land will decrease, and the average ocean temperatures will increase
C
on land will increase, as will the average ocean temperatures
D
on land will increase, and the average ocean temperatures will decrease
5) Russian thistle, better known as tumbleweed. It was accidentally introduced into the United States in the nineteenth century in contaminated flax seed. The fact that it has spread throughout the western United States suggests that
A
it has an efficient seed dispersal mechanism
B
it is being farmed as an agricultural crop
C
regions of Russia have a climate similar to the western United States
D
it is an attractive garden plant
6) Deforestation has the effect of
A
increasing atmospheric oxygen, O2
B
contributing to global warming and increasing soil loss through eroison
C
decreasing biodiversity
D
increasing atmospheric CO2
7) Food webs differ from food chains in that they
A
show the actual movement of energy within the ecosystem
B
show the distribution of biomass within an ecosystem
C
show more of the available feeding relationships in an ecosystem
D
identify the keystone species within an ecosystem
8) Ants are known to protect, or tend aphids from predators, and in return receive some nutrients from the aphids. This relationship is an example of
A
mutualism
B
sexual selection
C
commensalism
D
parasitism
9) Bees collect nectar from flowers, and serve as pollinators for the plants. This relationship is an example of
A
parasitism
B
mutualism
C
predator-prey
D
commensalism
10) A relationship between two organisms of different species in which one benefits, while the other neither benefits nor is harmed:
A
mutualism
B
parasitism
C
symbiosis
D
commensalism
11) When the fish is provided with so much food that it cannot eat all of it, the excess food
A
kills bacteria
B
can be absorbed by the plant for photosynthesis
C
helps to remove nitrogenous wastes from the aquarium
D
adds to the nitrogenous wastes in the aquarium
12) An organism that feeds only on heterotrophs is a(n)
A
autotroph
B
herbivore
C
omnivore
D
carnivore
13) The source of the carbon in fossil fuels is
A
dead plant and animal matter
B
limestone deposits
C
ammonia from proteins
D
ocean water
14) If the ecosystem above was contaminated with the pesticide DDT, the highest concentration of DDT would be found in
A
pelicans
B
microscopic organisms
C
the sea water
D
small fish
15) During a particularly hot summer, the smallest change in temperature would likely be noted in
A
oceans
B
deserts
C
temperate grasslands
D
temperate forests
*select an answer for all questions
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