Ecosystems And Biomes 2019-20 Unit 5 Question Preview (ID: 45995)
Food Webs And Interactions Between Organisms.
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Which organisms does the base of an energy pyramid represent?
a) producers
b) decomposers
c) omnivores
d) consumers
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 fox population will decrease.
c) The trees will produce fewer acorns.
d) The mountain lion population will increase.
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) tropical rain forest
b) coniferous forest
c) arctic tundra
d) temperate grassland
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) temperate deciduous forest
b) tundra
c) taiga
d) coniferous forest
Dolphins use whistles, chirps, and clicks in complex patterns to communicate with other dolphins. This type of communication is called
a) visual cues
b) pheromones
c) tactile cues
d) auditory cues
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) auditory cues
b) visual cues
c) pheromones
d) tactile cues
How will a thriving grassland ecosystem MOST likely be affected by a drought?
a) More plants will grow.
b) Animals will be forced to migrate.
c) Soil nutrients will be enriched.
d) Animal population will increase.
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) competition
b) mutualism
c) predation
d) parasitism
The bright colors of a poison dart frog are used to warn predators to stay away. This type of communication is called
a) pheromones
b) tactile cues
c) auditory cues
d) visual cues
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 and tapeworm both become ill.
b) The dog becomes ill, and the tapeworm benefits.
c) The tapeworm and dog help each other survive.
d) The tapeworm helps the dog survive.
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) Humans use technology to help organisms adapt to new areas.
b) Human actions can lead to imbalances in ecosystems.
c) Rabbit populations decrease when they are placed in new areas.
d) Rabbits from other continents cannot survive in different ecosystems.
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) mutualism
d) neutralism
Which interaction between animals BEST controls the population of a species?
a) wild animals marking territories
b) remora fish traveling with sharks
c) lions preying on zebra
d) wolves traveling in packs
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 eat the eggs and reduce the number of kiwi chicks.
b) Kiwi could develop the ability to fly short distances to escape possums.
c) Possums could make the nests their home so the kiwi have to build new nests.
d) Kiwi could lay three times as many eggs to ensure the survival of their chicks.
Which change in the environment would have a negative effect on the survival of a species in an ecosystem?
a) increase in the population of prey
b) introduction of a competing species
c) decrease in the population of predators
d) increase in genetic diversity of the species
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 are able to mutate rapidly.
b) Non-native plants are able to be used for medicine.
c) Non-native plants give more nutrients to native plants.
d) Non-native plants compete with native plants for resources.
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) mutualism
c) commensalism
d) neutralism
Which of these is the MOST likely effect of cutting down large numbers of trees?
a) loss of habitat for animals
b) increase in oxygen in the air
c) lower pollution levels
d) decrease in soil erosion
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) herbivore
c) carnivore
d) omnivore
Which changes will MOST likely have a negative effect on an ecosystem?
a) building a road
b) planting a tree
c) adding a freshwater source
d) creating a nature sanctuary
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