Ecology

Ecology Review

Multiple Select

Which of the following are biotic factors? Choose all that apply.

• sunlight

• decaying tree

• squirrel

• river

• oak tree

Multiple Select

Which of the following are abiotic factors? Check all that apply.

• sunlight

• decaying tree

• squirrel

• river

• oak tree

Multiple Choice

The graph shows the range of water conditions preferred by three species of fish in a stream. Which type of water conditions would cause the most competition for resources among ALL THREE species of fish?

• Very cold, many suspended particles, and very fast

• Very warm, very clear, and very slow

• Moderate temperatures, some suspended particles, flows at a medium speed

• Moderate temperatures, many suspended particles, flows very fast

Multiple Choice

The table represents four birds and their diets. Suppose pollution has caused a negative change in saltwater quality in a marine environment. Which bird would likely be most affected?

• Eagle

• Kingfisher

• Sparrow

• Pelican

Multiple Choice

A partial marine food web is shown. Green crabs carry a disease that can infect organisms that prey on (eat) the crabs. Which organism is most likely to impacted by the disease?

• Gulls

• Barnacles

• Marsh Periwinkles

• Blue Mussels

Multiple Choice

The graph shows the rotifer and zebra mussel population in the Hudson River. Based on the graph, what likely occurred resulting in the rapid decline of the zebra mussel population in 2007?

• The zebra mussels found a new habitat and moved on from the Hudson River.

• The zebra mussels reached their carrying capacity causing population decline.

• The zebra mussels did not adapt fast enough to the changing water temperature causing population decline.

• The zebra mussels were poisoned by the rotifers.

Multiple Select

In a forest ecosystem, deer eat small berries from various plants, as well as grasses, while wolves prey on deer. A drought (lack of rain) occurs in the forest ecosystem, resulting in a lack of healthy grass, berries, and other greenery. Which of the following are the limiting factors to the wolf population in this instance? Check all that apply.

• Water

• Berries/plants

• Deer

• Sunlight

Multiple Choice

How do artificial reefs positively affect ocean systems?

• support large populations

• force organisms to move

• pollute the water

Multiple Select

Which of these is a way that runoff impacts ocean systems? Check all that apply.

• contaminates the water

• harms marine organisms

• makes food sources easier to locate

• food sources can become toxic to eat

Multiple Choice

Two species attempting to use the same resource-

• Biotic factor

• Abiotic factor

• Carrying capacity

• Competition

• Limiting factor

Multiple Choice

Nonliving factors of an environment-

• Biotic factor

• Abiotic factor

• Carrying capacity

• Competition

• Limiting factor

Multiple Choice

Living or once-living factors of an environment-

• Biotic factor

• Abiotic factor

• Carrying capacity

• Competition

• Limiting factor

Multiple Choice

A part of an organism's habitat which keeps the population from growing past a certain point

• Biotic factor

• Abiotic factor

• Carrying capacity

• Competition

• Limiting factor

Multiple Choice

The amount of a certain organism a habitat and its resources can support-

• Biotic factor

• Abiotic factor

• Carrying capacity

• Competition

• Limiting factor