Ecology Unit Ecology Quiz 1

What kind of symbiosis is this?

In Africa, there is a tree that helps ants by providing food. The ants help the tree by protecting it.

• mutualism

• commensalism

• parasitism

A flowering field is an area where the primary plants are smaller flowers. This is a

• organism

• niche

• habitat

Interaction when one organism captures and feeds on another organism.

• predation

• niche

• biotic factors

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What kind of symbiosis is this?

A bird builds a nest in a tree and is helped. The tree is not harmed by the bird.

• parasitism

• commensalism

• mutualism

Symbiosis where one organism is helped and the other is not affected.

• parasitism

• mutualism

• commensalism

• host

In the food chain pictured, what type of organism is the bird? (a)  

• primary consumer
• secondary consumer
• tertiary consumer

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The diagram below shows a desert food web.

How will a large decrease in the number of rats impact the food web shown above?

• There will be an increase in the number of ants, tarantulas, and snakes.

• There will be a decrease in the number of snakes, coyotes, and hawks.

• There will be a decrease in the number of cacti and sagebrush plants.

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90% of the energy that gets lost as you move up a food pyramid or chain gets lost as

• pollution to the environment

• heat to the environment

• gets recycled

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Which of the following parts of an ecosystem are considered abiotic?

• soil

• water

• plants

• climate

Answer explanation

abiotic = nonliving

biotic = living

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An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• Predator

• Producer

• Decomposer