5 EGB Science | Section 1 Review

What is mutualism and can you give an example?

• Mutualism is a relationship between two species where both benefit. Example: bees and flowers.

• Mutualism is a relationship between species that compete for resources.

• An example of mutualism: lions and zebras.

• Mutualism is a relationship where one species benefits and the other does not.

How does competition affect species in an ecosystem?

• Competition always increases biodiversity.

• Competition can reduce biodiversity and affect the survival of less competitive species.

• Species always benefit from competition.

• Competition has no impact on the survival of species.

Define predation and mention a predator and its prey.

• A predator is the lion and its prey is the zebra.

• A predator is the tiger and its prey is the mouse.

• A predator is the eagle and its prey is the fish.

• A predator is the crocodile and its prey is the turtle.

What are the main characteristics of an aquatic ecosystem?

• Low oxygen levels, little light, scarce diversity

• Constant temperature, absence of nutrients, only terrestrial organisms

• Aquatic environment, diversity of organisms, salinity, temperature, light, and nutrients.

• Dry climate, scarcity of organisms, high altitude

Name two examples of terrestrial ecosystems.

• Ocean, Prairie

• Mountain, Lake

• Swamp, City

• Desert, Tropical forest

What is a mixed ecosystem and how is it formed?

• A mixed ecosystem is the combination of different ecosystems that interact in the same space.

• A mixed ecosystem is a type of aquatic ecosystem.

• A mixed ecosystem is formed only in urban areas.

• A mixed ecosystem is an ecosystem that only contains plants.

What are biotic and abiotic factors?

• Biotic factors are chemical elements in the soil.

• Biotic factors are the climatic conditions of an ecosystem.

• Abiotic factors are the organisms that interact with each other.

• Biotic factors are the living beings in an ecosystem, and abiotic factors are the non-living elements that affect those living beings.

How do abiotic factors influence an ecosystem?

• Abiotic factors have no impact on ecosystems.

• Abiotic factors influence the distribution, behavior, and survival of organisms in an ecosystem.

• Abiotic factors determine the amount of sunlight in an ecosystem.

• Abiotic factors only affect plants, not animals.

What type of relationship is mutualism?

• An ecological relationship in which two species benefit mutually.

• A relationship in which both species compete for resources.

• An interaction between species that does not affect either of them.

• A relationship where one species benefits and the other is harmed.

What happens when two species compete for the same resource?

• One species may displace the other or both may coexist.

• Both species go extinct immediately.

• The species join together to share the resource.

• One species becomes stronger and does not affect the other.