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Ecosystems And Biomes 2019-20 Unit 5
Test Description: Food Webs and Interactions between organisms.
Instructions: Answer all questions to get your test result.
1) Which organisms does the base of an energy pyramid represent?
A
decomposers
B
omnivores
C
producers
D
consumers
2) Acorns are eaten by squirrels and squirrels are eaten by foxes. What will MOST likely happen if squirrels are removed from this food chain?
A
The fox will eat acorns.
B
The mountain lion population will increase.
C
The trees will produce fewer acorns.
D
The fox population will decrease.
3) In a certain biome, wildflowers and herbs are some of the most common plants. Bison and prairie dogs consume the wildflowers and herbs. Coyotes and eagles hunt the prairie dogs. Which biome is most likely being described?
A
arctic tundra
B
temperate grassland
C
tropical rain forest
D
coniferous forest
4) A biome with many trees which are green in the summer and lose their leaves in the fall to conserve water is most likely a
A
coniferous forest
B
temperate deciduous forest
C
taiga
D
tundra
5) Dolphins use whistles, chirps, and clicks in complex patterns to communicate with other dolphins. This type of communication is called
A
auditory cues
B
pheromones
C
visual cues
D
tactile cues
6) When a food source for ants begins to run out the ants stop leaving chemicals behind to direct other ants. This type of communication is called
A
tactile cues
B
visual cues
C
auditory cues
D
pheromones
7) How will a thriving grassland ecosystem MOST likely be affected by a drought?
A
Soil nutrients will be enriched.
B
Animal population will increase.
C
Animals will be forced to migrate.
D
More plants will grow.
8) If a fox and an eagle eat some of the same organisms in an ecosystem, the relationship between the fox and the eagle could be classified as
A
predation
B
competition
C
parasitism
D
mutualism
9) The bright colors of a poison dart frog are used to warn predators to stay away. This type of communication is called
A
auditory cues
B
visual cues
C
pheromones
D
tactile cues
10) Tapeworms live in the intestines of dogs and absorb nutrients from food the dog eats. Which BEST describes the outcome of this relationship?
A
The dog becomes ill, and the tapeworm benefits.
B
The dog and tapeworm both become ill.
C
The tapeworm and dog help each other survive.
D
The tapeworm helps the dog survive.
11) Domesticated rabbits from Europe were introduced into an Australian ecosystem. The rabbit population increased quickly and continues to be a cause of severe ecosystem damage. Which statement is the BESTS conclusion from this series of events?
A
Rabbit populations decrease when they are placed in new areas.
B
Rabbits from other continents cannot survive in different ecosystems.
C
Human actions can lead to imbalances in ecosystems.
D
Humans use technology to help organisms adapt to new areas.
12) Clownfish take shelter in the tentacles of sea anemones and keep sea anemones clean. Which type of relationship does this represent?
A
parasitism
B
commensalism
C
neutralism
D
mutualism
13) Which interaction between animals BEST controls the population of a species?
A
wolves traveling in packs
B
lions preying on zebra
C
remora fish traveling with sharks
D
wild animals marking territories
14) New Zealand is home to many flightless birds, such as the kiwi, which build their nests on the ground. Over time, ground predators such as possums have been introduced. Which statement could be a possible effect on the kiwi?
A
Possums could make the nests their home so the kiwi have to build new nests.
B
Possums could eat the eggs and reduce the number of kiwi chicks.
C
Kiwi could develop the ability to fly short distances to escape possums.
D
Kiwi could lay three times as many eggs to ensure the survival of their chicks.
15) Which change in the environment would have a negative effect on the survival of a species in an ecosystem?
A
decrease in the population of predators
B
increase in the population of prey
C
introduction of a competing species
D
increase in genetic diversity of the species
16) When taken to a new habitat, non-native species often threaten native plants of the new habitat. Why do they do this?
A
Non-native plants compete with native plants for resources.
B
Non-native plants are able to be used for medicine.
C
Non-native plants are able to mutate rapidly.
D
Non-native plants give more nutrients to native plants.
17) Clownfish take shelter in the tentacles of sea anemones and the sea anemones don't benefit. Which type of relationship does this represent?
A
parsitism
B
commensalism
C
neutralism
D
mutualism
18) Which of these is the MOST likely effect of cutting down large numbers of trees?
A
decrease in soil erosion
B
increase in oxygen in the air
C
lower pollution levels
D
loss of habitat for animals
19) Max was trying to place different animals within an energy pyramid. He learned that zebra longwing butterflies drink nectar from flowers. In which level of the energy pyramid should Max place the zebra longwing butterfly?
A
producer
B
carnivore
C
omnivore
D
herbivore
20) Which changes will MOST likely have a negative effect on an ecosystem?
A
adding a freshwater source
B
building a road
C
planting a tree
D
creating a nature sanctuary
*select an answer for all questions
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