Ecosystems Study Guide

What is an example of an abiotic factor?

• amount of fruit on trees

• tree bark

• air pollution

• fish population

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What are herbivores?

• animals that eat only meat

• plants that use the sun to get their energy

• animals that only eat plants

Producers are:

• nonliving parts of an ecosystem

• all the living or once-living parts of an ecosystem

• green plants using the energy in sunlight to make their own food

• considered autotrophs because they make their own food

Consumers: (mark all that are true)

• organisms that must get energy by eating other organisms

• consume and break down dead things into basic nutrients needed for plants

• can be divided into herbivores, carnivores and omnivores

• all the non-living parts of an ecosystem

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A consumer that eats only insects are:

• herbivores

• biotic

• carnivores

• abiotic

Examples of abiotic factors are:

• bird migrations

• soil depth

• amount of sunlight

• ant hills

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Examples of Decomposers that one might discover in different ecosystems are:

• earthworms that feed on dead animals

• fungi

• jackals

• bacteria

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Omnivores are:

• consumers that eat only plants

• consumers that eat only meat

• consumers that break down dead things into basic nutrients needed for plants

• consumers that eat both plants and animals

The hermit moving into an empty seashell is an example of what kind of symbiotic relationship?

• parasitism

• abioticism

• commensalism

• mutualism

Commensalism is the symbiotic relationship where:

• one organism benefits and the other is harmed

• one organism benefits and the other is not helped or harmed

• both organisms in the relationship benefit

• the amount of sunlight benefits the trees