15 Questions
Which of the following is an example of competitive exclusion?
The replacement of red squirrels by gray squirrels in Britain
Which of the following is true about obligate aerobes?
They require continuous oxygen supply
Which of the following is true about obligate anaerobes?
They are inhibited or killed by oxygen
Which of the following is true about facultative anaerobes?
They can use oxygen if available
What is the term used to describe the process by which natural selection drives competing species into different patterns of resource use or different niches?
Spatial niche partitioning
Which of the following best describes a fundamental niche?
The resources and habitat that the species could theoretically use
Which of the following best describes a realized niche?
The resources and habitat that the species is actually able to use
Why can only one species occupy a niche at a specific time?
Because of interspecific competition
What is an advantage of occupying a very specific niche?
Encountering less interspecific competition
Which of the following is an example of a specialist species?
Koalas
Which species was identified as a keystone predator in Robert Paine's study at Mukkaw Bay?
Starfish
What happened to the barnacle, Balanus glandula, after the removal of the starfish in Paine's study?
It was replaced by another barnacle species
What effect did the removal of the starfish have on species diversity in the study area?
Species diversity significantly decreased
What role do sea otters play in maintaining balance in the ecosystem?
They regulate sea urchin populations
What is the term used for species that provide habitat for a variety of other species?
Keystone hosts
Test your knowledge about niches and competition between species with this quiz. Learn about fundamental and realized niches, the resources and habitats that species could theoretically use and actually use, and the role of competition within and between species. Sharpen your understanding of ecological concepts and their impact on species interactions.
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