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WorksheetsEcology & Ecosystems Quiz 2
Total questions: 15
Worksheet time: 11mins
Is the following factor density-dependent or density-independent? PREY
Density Dependent
Density Independent
Is the following factor density-dependent or density-independent? Disease
Density Dependent
Density Independent
Is the following factor density-dependent or density-independent? FOOD
Density Dependent
Density Independent
Is the following factor density-dependent or density-independent? Volcanic Eruption
Density Dependent
Density Independent
The _________________ _____________________ describes the total number of animals a given area of land can sustain.
Population Density
Community Growth
Carrying Capacity
As a population approaches carrying capacity (K), which of the following is predicted by the logistic growth equation?
the growth rate will be zero
population will increase exponentially
carrying capacity will increase
A lucky yeast cell falls into your glass of grape juice and reproduces for 10 hours. What type of growth curve is being demonstrated? (Yeast really, really like the juice-plenty of food)
Exponential growth curve
Logistical growth curve
Woodpeckers peck trees to find food and make nests. What would happen if most of the trees are cut down?
The woodpecker populations will lack adequate resources and will decrease.
The woodpecker populations will raise more young per year.
The woodpecker populations will experience greater immigration.
The woodpecker populations will use new food sources and nesting sites.
The carrying capacity for adult frogs in a wetlands ecosystem is 1000 individuals. The frogs eat flies and other small animals, and they are prey for raccoons, snakes, and large birds. Which event will most likely happen if an additional 200 adult frogs immigrated to the ecosystem?
The frog population would experience a pattern of exponential growth.
The carrying capacity for frogs would increase by 200 frogs.
About 200 adult frogs would die because of lack of resources, or by predation.
A food web shows feeding relationships in an ecosystem. In this food web, what is represented by the chains of arrows from the grass to the fox?
the one-way flow of energy through the ecosystem
the conservation of energy in the ecosystem
the removal of energy from the ecosystem
The diagram below represents four trophic levels in an ecosystem. Which explanation best explains how energy passes through the trophic levels?
Energy flows through all the trophic levels and then back to the producers.
Most of the energy from the plants is transferred to the mice, grasshoppers, and rabbits because plants don't have to search for their food.
About ten percent of the energy at one trophic level is passed to the next trophic level.
Birds have the most energy because energy from all the other trophic levels flows to the birds.
