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WorksheetsDisruptions of the Cycling of Matter
Total questions: 14
Worksheet time: 39mins
Kudzu is an invasive plant that can grow as much as one foot in a day. A partial food web for an ecosystem is shown. Suppose kudzu invades this ecosystem.
Select three organisms that would most likely compete with kudzu in this ecosystem.
The flow of energy in a grassland ecosystem is shown. Based on the diagram, which two populations best represent trophic levels that receive the LEAST amount of the total energy provided to the ecosystem by the grass?
Crickets and sparrows
Hognose snake and Owls
Rabbits and mice
Toads and spiders
A food web representing a Gulf Coast ecosystem is shown. Based on this food web, which organism occupies multiple trophic levels?
Eastern cottontail
An energy pyramid for an ecosystem is shown. Based on the energy pyramid, how much energy would be stored in the tertiary consumers in this ecosystem?
2 kcal
Select TWO factors that are responsible for the inefficiency of energy transfer from one trophic level to another.
organisms lose energy to the environment as heat
some parts of the organisms are not eaten by consumers
omnivores get energy from producers and consumers
carnivores obtain energy from consumers only
A partial Texas food web is shown is above.
Identify and explain ONE effect that would occur if a disease suddenly reduced the population of Texas horned lizards in the food web.
Review the food web carefully. Then enter your answer and explanation in the box provided.
List organisms in each trophic level: Producers, Primary Consumers, Secondary Consumers,
Tertiary Consumers. Then Predict the effect of what would occur if rabbits were removed from the food web.
List organisms in each trophic level: Producers, Primary Consumers, Secondary Consumers,
Tertiary Consumers. Then Predict the effects of the algae being removed from the ecosystem.
List organisms in each trophic level: Producers, Primary Consumers, Secondary Consumers,
Tertiary Consumers. Then Predict the effects of the crab being removed in the ecosystem.
Identify and explain ONE effect overfishing would have on the food web.
Review the food web carefully. Then enter your answer and your explanation in the space below.
Which animal has the least amount of energy?
Eagle
Lizard
Gradd
Rabbit
Which organism has the most amount of energy?
Eagle
Grass
Snail
Rabbit
If the producer starts off with 250,000 kcal, how many calories will the secondary consumer have?
250,000 kcal
250 kcal
25,000 kcal
2,500 kcal
What is the role on decomposers?
Eat plants
Break down dead animals and material
Produce their own food
Eat every animal under it
