AP Biology Conservation Ecology

How do invasive species impact ecosystems?

• The increase density dependent limiting factors

• They establish themselves as new keystone species in an area

• The open up new niches in the ecosystem

• They outcompete native species and overpopulate the area

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which point on the graph represents carrying capacity?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-4

During the carbon cycle, which of the following carbon compounds would be utilized as an energy source by heterotrophs? 

• carbonic acid

• organic molecules

• carbon dioxide

• carbon monoxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What causes trophic cascades?

• Increasing the number of producers

• Pollution

• The removal of a keystone species

• Introducing a new species to an ecosystem

Tags

NGSS.HS-LS2-6

What types of organisms are producers?

• autotrophs

• apex predators

• heterotrophs

• keystone species

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are limiting factors?

• The maximum number of organisms an area can sustain

• Scarce resources that limit the size of a population

• Conditions that limit how much energy flows to the next trophic level

• How diverse the populations of a community are

Tags

NGSS.MS-LS2-1

If the producer level of an ecosystem has 750,000 J of energy, how much energy would be passed on to the secondary consumers?

• 75,000 J

• 7,500 J

• 750 J

• 75 J

Tags

NGSS.MS-LS2-3

What does carrying capacity mean?

• The amount of abiotic factors present in the environment

• The total number of species living in an ecosystem

• The number of offspring one mother can have in a year

• The number of organisms an ecosystem can sustain

Tags

NGSS.MS-LS2-4

Which of the following would be a density independent limiting factor?

• A virus spreading through a population

• A forest fire burning down a forest

• Birds competing for a limited amount of seeds

• A new predator moving to an area

Which of the following would be a density-dependent limiting factor?

• Two wolf packs having overlapping territories

• Pollution

• A flood

• Deforestation

Tags

NGSS.MS-LS2-4