12 Ecology PRE-Assessment

LT#1: What is the relationship between the hawk and the grasshopper in this food web?

• The hawk is a primary producer and the grasshopper is a tertiary consumer

• The hawk is a predator and the grasshopper is its prey

• The grasshopper is a parasite and the hawk is the host

• The hawk is a tertiary consumer and the grasshopper is a primary consumer

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LT#1: Which statement best describes a relationship shown in this energy pyramid?

• The rabbits are secondary producers.

• Only the rabbits depend on grass for energy.

• The grass is a primary consumer.

• The coyote is a secondary consumer.

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LT#1: The African savanna is a grassland scattered with shrubs and small trees. Some of the organisms that live in the savanna are shown below.

Which two types of organisms have a producer=consumer relationship?

• Zebras and hyenas

• Hyenas and cheetahs

• Trees and elephants

• Fungi and dung beetles

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LT#1: While exploring a lake in Argentina, Laguna del Diamante (Diamond Lake), scientists found rocks covered with mats made of photosynthetic microbes. Flamingos in the nutrient rich microbes by pumping the lakewater through their bill.

What is the relationship between the photosynthetic microbes and the flamingos in the Laguna del Diamante ecosystem?

• The microbes are parasites and the flamingos are hosts.

• The microbes are carnivores and the flamingos are predators.

• The microbes are herbivores and the flamingos are carnivores.

• The microbes are producers and the flamingos are consumers.

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LT#2: Fish in a lake have to compete for space. Different fish have different optimal temperature ranges. The graph below shows the temperature ranges of four species.

At which temperature range will there be the most competition for space among these fish?

• 25*C to 30*C

• 15*C to 20*C

• 10*C to 15*C

• 5*C to 10*C

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LT#2: Feral hogs are omnivores that feed on native plants, crops, and small animals. Feral hogs can damage an ecosystem by rooting through the soil to look for food and trampling small plants.

Which type of native organisms do feral hogs most likely compete with for food sources?

• Carnivores and producers

• Herbivores and carnivores

• Producers and decomposers

• Decomposers and herbivores

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LT#2: The graph below shows the range of water conditions preferred by three species of fish in an Ozark stream.

Water with which of these conditions could cause the most competition for resources among all three species of fish?

• Very cold, very clear, and very fast

• Very warm, very clear, and very slow

• Mild temperatures, some suspended particles, flows at a medium speed

• Mild temperatures, some suspended particles, flows very fast

Tags

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LT#2: The Prairies Region and the Cross Timbers are located in the north-central Texas. The graph below shows information about eating habits of white-tailed deer in these regions.

A Cross Timbers rancher is concerned about competition between the ranch animals and the deer. Based on the graph, which ranch animals compete for the most food with white-tailed deer?

• Cattle that eat grass and feed

• Goats that eat weeds and shrubs

• Turkeys that eat seeds and fruit

• Hogs that eat fruit, seeds, and feed

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LT#3: In Florida, black bears are found in only a few regions. Roads and highways cross all these regions. If new road construction continues through the regions occupied by the bears, how will black bear populations most likely be affected?

• Populations will increase as the bears spread out to other areas

• Populations will increase because other herbivores will move out

• Populations will decrease due to pollution caused by cars and trucks

• Populations will decrease as they will have less area to find food and shelter

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LT#3: Copper compounds are used in large amounts to control the growth of algae and other aquatic plants. Copper interferes with photosynthesis in these organisms. What would be the most likely result of an accidental spill of these compounds in an aquatic environment?

• The fish would grow larger than usual

• The zooplankton population would increase

• The plants would increase in size but decrease in number

• The plant populations would be reduced

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