AnswersScience 7 B M12 2526 S2Populations

Populations Answers

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1
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How do genetic factors influence the formation of "dead zones” around creosote bushes?

Answer:

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2
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What did you include in your response? Check all that apply.

A
The creosote bush has genes that give it the ability to capture and hold water.
B
Creosote bushes have developed a root system that is very good at absorbing water.
C
Seeds that fall nearby cannot get enough water to sprout, creating a dead zone around the bush.
3

Based on the article, which statement accurately describes garlic mustard and trillium in the forest?

A
Trillium and garlic mustard are both native plants.
B
Trillium is a native plant, and garlic mustard is an invasive plant.
C
Trillium is an invasive plant, and garlic mustard is a native plant.
D
Trillium and garlic mustard are both invasive plants.
4

According to the author, what is the main reason for the decrease in trillium in the forest? What evidence does she give to support her claim?

Answer:

Answer

5

Before scientists determined that deer were the cause of the trillium decrease, what did most people believe was the cause?

A
Most people thought that trillium was not getting enough sunlight in the forest.
B
Most people thought that trillium was not getting enough water in the forest.
C
Most people thought that garlic mustard was crowding out trillium in the forest.
D
Most people thought that garlic mustard was eating the trillium in the forest.
6

According to the article, how does human activity affect the availability of food for deer populations? What result does this have on the deer populations?

Answer:

Answer

7

What did you include in your response? Check all that apply.

A
The main reason for the decrease in trillium is the large number of deer in the forest that are eating the trillium.
B
The author cites a research study performed by scientists as evidence to support her claim.
C
In this study, researchers planted two fields, each containing garlic mustard and trillium. One was left open to deer, and the other was fenced off.
D
Researchers found that trillium was able to regain much of its original space in the protected field.
E
Researchers found that there was still more garlic mustard in the unprotected field because the deer ate the trillium.
F
The author also states that similar research studies have been conducted in many forests across the United States, and they all reveal similar results.
8

What did you include in your response? Check all that apply.

A
People’s yards are a source of food for deer.
B
Many people have gardens that provide year-round food supplies for deer populations.
C
Since food is always available, deer populations have increased rapidly.

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Populations Answers — Science 7 B M12 2526 S2