According to this graph, at which elevation is the population density of Species A the highest?
4,000 ft
6,000 ft
5,000 ft
3,000 ft
What is niche differentiation?
When more than one species with almost the same fundamental niche adapt to become specialists in different aspects of the fundamental niche.
What is coevolution?
Coevolution occurs when the fitness of two different species is tightly linked and these two species evolve in response to evolutionary changes in each other.
What type of mimicry occurs when a harmless animal mimics a dangerous or unpalatable animal?
Batesian mimicry
Coloration mimicry
Chemical mimicry
Mullerian mimicry
What is a niche?
A area thats suitable for a particular organism to live in
The area where a predator hunts.
A role thats played by a particular species in an ecosystem
The type of prey that a predator hunts.
Which of the following is a density-independent factor that does not become more limiting as the population increases?
Available habitat
Water
Flash flood from a thunderstorm
Reproductive rate
Which of the following is true about amensalism?
Amensalism can happen when a bigger, more established organism out competes a smaller organism for resources.
A chaparral plant that is usually only seen in the first couple of years after a fire is also called what?
A smoke germinator
A fire germinator
A fire-follower
Ash vegetation
How many trophic levels does an omnivore feed on within an ecosystem?
Omnivores feed at all trophic levels.
3
2
None, because the various trophic levels do not apply
What is an ecosystem?
Production of a large number of small offspring, each of which receives little parental investment.
What is a modern human intervention in the phosphorus cycle?
Capturing atmospheric phosphate for use as a fertilizer
Planting crops that release a lot of phosphate
Mining phosphate for use as a fertilizer
Replacing phosphate with magnesium
What does the term colonization mean in terms of organisms?
When a species starts to populate a habitat where the species was not already present
