Ecology Test Review

Identify one predator/prey relationship that may occur in this ecosystem.

• Predator: Lion

  Prey: Zebra

• Predator: Shark

  Prey: Seal

• Predator: Eagle

  Prey: Rabbit

• Predator: Frog

  Prey: Fly

Tags

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In a stable, long-existing community, the establishment of a single species per niche (role) is most directly the result of

• parasitism

• interbreeding

• competition

• overproduction

In a forest community, a shelf fungus and a slug live on the side of a decaying tree trunk. The fungus digests and absorbs materials from the tree, while the slug eats algae growing on the outside of the trunk. These organisms do not compete with one another because they occupy

• the same habitat (home), but different niches (roles)

• the same niche, but different habitats

• the same niche and the same habitat

• different habitats and different niches

On which day did the population represented in the graph below reach the carrying capacity of the ecosystem?

• day 11

• day 8

• day 3

• day 5

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One biotic factor (living) that limits the carrying capacity of any habitat is the

• availability of water

• level of atmospheric oxygen

• activity of decomposers

• amount of soil erosion

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Identify ALL the correct abiotic factor (non living) that would directly affect the survival of organism A shown in the diagram below.

(Select all the correct possible answers)

• amount of water/oxygen

• water temperature

• predator presence

• prey presence

Tags

NGSS.MS-LS2-1

The last known wolf native to the Adirondack Mountains of New York State was killed over a century ago. Several environmental groups have recently proposed reintroducing the wolf to the Adirondacks.  These groups claim there is sufficient prey to support a wolf population in this area. These prey include beaver, deer, and moose. Opponents of this proposal state that the Adirondacks already have a dominant predator, the Eastern coyote.

Why is the coyote considered a limiting factor in the Adirondack Mountains?

(Select all the correct possible answers)

• Coyotes control the growth of the prey population.

  (beaver, deer, moose)

• Coyotes eat beavers, deer and moose so they keep the population form getting to high.

• Coyotes are not native to the region.

• Coyotes have no natural predators.

Tags

NGSS.MS-LS2-1

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A population of gray squirrels lived in the trees surrounding four houses in a city. The houses and trees were removed, and a tall office building was constructed in their place. Some of the squirrels were able to survive by relocating to the trees in a park nearby.

State All the specific ways the relocated squirrels would most likely interact with a gray squirrel population that has lived in the park for many years.

(Select all the correct possible answers)

• Compete for food resources

• Compete for space

• Compete for mates

• Would occupy the same niche

Tags

NGSS.MS-LS2-2

A population of gray squirrels lived in the trees surrounding four houses in a city. The houses and trees were removed, and a tall office building was constructed in their place. Some of the squirrels were able to survive by relocating to the trees in a park nearby.

State All the specific ways the relocated squirrels will change an abiotic factor in the park ecosystem.

(Select all the correct possible answers)

• Increase in soil aeration

• Decrease in water quality

• Drinking more water

• More space will be taken up

A population of gray squirrels lived in the trees surrounding four houses in a city. The houses and trees were removed, and a tall office building was constructed in their place. Some of the squirrels were able to survive by relocating to the trees in a park nearby.

State All the specific natural factors in the park ecosystem that will limit the growth of the squirrel population.

(Select all the correct possible answers)

• Availability/competition of food

• Predators limiting the size of population

• Human intervention

• Climate change

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4