Ecosystem Interactions

If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease
• stay the same
• increase

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

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

• coexistence
• competition
• mutualism

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NGSS.MS-LS2-2

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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NGSS.MS-LS2-3

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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NGSS.3-LS2-1

NGSS.3-LS4-3

symbiotic relationship in which one organisms benefits and the other organism is not affected

• invasive (non-native) species

• mutualism

• parasitism

• commensalism

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NGSS.MS-LS2-2

symbiotic relationship in which both organisms benefit

• competition

• Mutualism

• nitrogen fixation

• energy pyramid

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NGSS.MS-LS2-2

Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales. What kind of relationship is this?

• Mutualism

• Parasitism

• Commensalism

• Predatory

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NGSS.MS-LS2-2

The crocodile and bird have a _______________ relationship. The crocodile benefits by having its teeth cleaned. The bird benefits by gaining food and protection. Both animals benefit from this relationship.

• parasitism

• predator and prey

• mutualism

• commensalism

Tags

NGSS.MS-LS2-2

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

Tags

NGSS.MS-LS2-3

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4