Ecology Review

If the grasshopper were to be removed completely from the food web, what organism would be most effected?

• The squirrel

• The deer

• The shrew

• The rabbit

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

How do aquatic plants obtain their energy?

• Through the process of photosynthesis (carbon dioxide, radiant energy, and water)

• They are heterotrophs, they must consume to obtain energy

• Aquatic plants have adapted to fossil fuel and oil in the ocean, this is how they obtain their energy

• Aquatic plants obtain their energy by temperature

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A bird consuming parasites off of a rhino would be an example of:

• mutualism

• parasitism

• commensalism

• competition

A tick is harming a deer (host). Which symbiotic relationship would this be?

• commensalism

• parasitism

• mutualism

• competition

Evaluate the role of decomposers in an ecosystem and propose a study to investigate their impact on nutrient cycling. Include your hypothesis and methods for data collection.

• Assume decomposers have minimal impact and do not include them in the nutrient cycling study.

• Hypothesize that decomposers speed up nutrient cycling, set up controlled decomposition areas, and measure soil nutrient levels.

• Focus only on the role of producers in nutrient cycling, excluding decomposers from the study.

• Study decomposers without a control group, assuming all changes in nutrient levels are due to their activity.

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DOK Level 3: Strategic Thinking

What is the role of decomposers in an ecosystem?

• To produce energy through photosynthesis

• To consume other organisms for energy

• To break down dead organisms and recycle nutrients

• To compete with other organisms for resources

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Which organism do the owl and the weasel compete for in the food web?

• Hawk

• Spider

• Grasshopper

• Shrew

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NGSS.MS-LS2-2

Algae called zooxanthellae live inside the cells of a coral under the sea. The coral provides carbon dioxide for algae which in turn provides oxygen for the coral to live. What type of interaction is this?

• Commensalism

• Mutualism

• Parasitism

• Competition

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NGSS.MS-LS2-2

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow

• Population grows to a new carrying capacity

• Population decreases until it returns to its carrying capacity

• The population will go extinct due to lack of resources

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which type of environmental change allows for genetic traits to be passed or the possibility of mutations to occur?

• Short Term Change

• Long Term Change

• Both

• None

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