Resources in Ecosystems

This graph shows the impact that zebra mussel have on water clarity in a river. Water clarity is a measure of how deeply light can reach into the water. Based on the graph, which statement is true?

• Water clarity is highest closer to the zebra mussel population.

• Water clarity is lowest closer to the zebra mussel population.

• Water clarity is highest farther away from the zebra mussel population.

• Water clarity is lowest at 8 kilometers away from the zebra mussel population.

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NGSS.MS-LS2-4

A symbiotic relationship in which one organism benefits while the other is harmed is called

• mutualism

• commensalism

• parasitism

Which of the following is the best example of mutualism?

• a dog steals a bone from another dog

• a tiger hunts and eats a deer

• a bird eats ticks from a zebra's skin

• a bee stings a jogger

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NGSS.MS-LS2-2

Lion and Zebra - The lion hunts and kills the zebra for its food. This is an example of which type of interaction among organisms?

• predator-prey

• mutualism

• commensalism

• parasitism

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Cattle egrets feed in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not. This relationship is an example of

• mutualism

• commensalism

• competition

• parasitism

When this isopod enters the fish through its gills, consumes the fish's tongue, then replaces the tongue, it is acting as a

• predator

• prey

• parasite

• friend

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The parts of Earth in which organisms are able to live

• Biosphere

• Hydrosphere

• Pedosphere

• Atmosphere

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A group of populations of living things and the nonliving parts of their environment that support them.

• Ecosystem

• Biome

• Biosphere

• Community

A symbiotic relationship in which both organisms benefit is called

• mutualism

• commensalism

• parasitism

A symbiotic relationship in which one organism benefits and the other remains unaffected is called

• mutualism

• commensalism

• parasitism

Tags

NGSS.MS-LS2-2