Ecology Keystone Eligible Quiz

What is an ecosystem?

• A type of computer software

• A community of living organisms and their interactions with the non-living components of their environment.

• A type of clothing material

• A new type of musical instrument

Explain the concept of a food web in an ecosystem.

• A food web is a physical structure made of food in an ecosystem

• A food web is a mathematical equation used to calculate food production in an ecosystem

• A food web in an ecosystem is a network of interconnected food chains, showing the flow of energy and nutrients through the different organisms in the ecosystem.

• A food web is a type of spider that catches food in an ecosystem

What is biodiversity and why is it important?

• Biodiversity is the variety of life on Mars, including different species of aliens, and it is important for intergalactic travel.

• Biodiversity is the variety of life on Earth, including different species of plants, animals, and microorganisms, and it is important for ecosystem stability, essential resources, and human well-being.

• Biodiversity is the variety of life on Earth, including different species of plants, animals, and microorganisms, and it is important for causing environmental destruction.

• Biodiversity is the variety of life on Earth, including different species of plants, animals, and microorganisms, and it is not important for anything.

Describe the different levels of biodiversity.

• Genetic diversity, species diversity, and ecosystem diversity

• Land diversity, water diversity, and air diversity

• Animal diversity, plant diversity, and fungi diversity

• Tropical diversity, temperate diversity, and polar diversity

What factors can affect population dynamics?

• Birth rate, death rate, immigration, and emigration

• Number of trees, types of birds, and availability of water

• Education level, income, and social status

• Weather patterns, soil composition, and air quality

Explain the difference between exponential and logistic population growth.

• Exponential growth occurs when resources are scarce, while logistic growth occurs when resources are abundant.

• Exponential growth occurs in a stable environment, while logistic growth occurs in an unstable environment.

• Exponential growth is limited by carrying capacity, while logistic growth is unlimited.

• Exponential growth is unlimited and occurs when resources are abundant, while logistic growth is limited by carrying capacity and occurs when resources become scarce.

How does energy flow through an ecosystem?

• From the ocean to producers, then to consumers, and finally to decomposers.

• From the earth's core to producers, then to consumers, and finally to decomposers.

• From the moon to producers, then to consumers, and finally to decomposers.

• From the sun to producers, then to consumers, and finally to decomposers.

Discuss the role of producers, consumers, and decomposers in energy flow.

• Decomposers break down living organisms

• Producers convert sunlight into energy, consumers obtain energy by consuming producers or other consumers, and decomposers break down dead organisms and waste, releasing nutrients back into the ecosystem.

• Consumers obtain energy by photosynthesis

• Producers convert sunlight into water

What is ecological succession?

• The process of change in the weather patterns of an ecological community over time.

• The process of change in the geological structure of an ecological community over time.

• The process of change in the political structure of an ecological community over time.

• The process of change in the species structure of an ecological community over time.

Describe the process of primary succession and give an example.

• Primary succession occurs when existing vegetation is removed and replaced with new species. An example is the reforestation of a logged area.

• The process of primary succession involves the gradual establishment of biotic communities and the development of soil over time. An example of primary succession is the colonization of barren rock by lichens and mosses.

• Primary succession is the result of human intervention in an ecosystem. An example is the planting of trees in a deforested area.

• The process of primary succession involves the sudden appearance of fully developed ecosystems. An example is the growth of grass on a lawn.