Ecosystem Relationships

Which term best describes two predators living in the same habitat who feed on the same prey?

• coexistence

• competition

• mutualism

• predatory

A pride of lions stalks, tackles, and kills an antelope. Which is best being demonstrated?

• predation

• mutualism

• parasitism

• commensalism

Plants interact with living and nonliving components in their environment. Which is an interaction with a nonliving element?

• Small insects eating the stems of the plants

• Humans breathing oxygen released by plants

• Bees gathering pollen from flowers of plants

• Sandy soil holding the roots of the plants

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Which of these is an example of one living thing depending on another living thing?

• Cat walking on the sand
• Bird building a nest in a tree
• Dog warming in the sunlight
• Squirrel drinking water

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All of the following are examples of living things interacting with each other EXCEPT —

• birds preying on insects living in the grass
• squirrels spreading the seeds of trees by burying them
• frogs sleeping in the mud at the bottom of the pond
• fish eating plants and other smaller fish

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Living and nonliving things interacting in an environment is called:

• A. Organism
• B. Producer
• C. Consumer
• D. Ecosystem

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Plants are interacting directly with another living element of their environment when they are -

• A. Soaking up water

• B. Absorbing sunlight

• C. Attracting insects

• D. Taking in carbon dioxide

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A tapeworm inside a dog is

• competition

• predation

• commensalism

• parasitism

A symbiotic relationship that involves species having to fight for something they both need or want

• competition

• predation

• commensalism

• parasitism

relationship in which two species live closely together

• resource

• mutualism

• succession

• symbiosis