Ecology 2

How would introducing a predator to a population of deer on an island affect the population's carrying capacity?

• Increase the carrying capacity

• Decrease the carrying capacity

• No change to the carrying capacity

• The deer would leave the island

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Which of the following would be an example of an abiotic factor?

• Tree

• Bug

• Water

• Deer

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Non-native species are accidentally or purposefully introduced into an ecosystem that they are not originally from. What effect can they have on that ecosystem? Why?

• Reduce the biodiversity; they have no natural predators so they grow and reproduce rapidly.

• Increase the biodiversity; they have no natural predators so they grow and reproduce rapidly.

• Reduce the biodiversity; they have become food for organisms that may not have had any.

• Increase the biodiversity; they become food for organisms that may not have had any.

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Keystone species are responsible for what in an ecosystem?

• They help to support the biodiversity of an ecosystem.

• They limit the biodiversity within an ecosystem.

• They decrease the population numbers of different species.

• They are introduced to an ecosystem and eat other species to extinction.

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What is the difference between a community and an ecosystem?

• A community includes everything an ecosystem has, plus all of the abiotic factors.

• An ecosystem includes everything a community has, plus all of the abiotic factors.

• A community is where different populations live, an ecosystem has fewer populations.

• An ecosystem only includes a group of the same species in the same place at the same time

Humans can manipulate populations. One way to decrease a population's carrying capacity is to _____.

• Eliminate the predators of that population.

• Plant more vegetation that the population may consume

• Introduce a new predator of that population

• Increase the land that the population lives on

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The Kaibab National Forest is a 450 square mile area filled with thick trees, streams, and rock studded mountains. It is home to large populations of deer, elk, and many other organisms. It is surrounded by other forests in the same area. What type of ecological level is this a description of?

• Population

• Biosphere

• Species

• Ecosystem

Which of these events could have taken place between years 4 & 5?

• High birth rates

• Disease

• Above average rainfall

• More land added

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Between which years is the population showing positive growth?

• 1 & 2

• 3 & 4

• 4 & 5

• 6 & 8

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Which of the following would NOT be included in an organism's niche?

• Where it lives

• What it eats

• How many offspring it has

• What color it is