Question 1

Question

A)
Imagine that an ecosystem contains rabbits, foxes, wolves, and deer. The following predator-prey
relationships exist:
Rabbits are eaten by foxes and wolves
Deer are eaten by wolves
Foxes are eaten by wolves
Select the animal whose absence would have the greatest negative effect on the ecosystem.
(1 point)
wolf
rabbit
fox
deer
Question 2
A) In an ecosystem with low biodiversity, the removal of a species will (1 point)
disturb the ecosystem because another species will take its place.
not affect the ecosystem because another species will not be able to replace it.
not affect the ecosystem because another species will take its place.
disturb the ecosystem because another species will not be able to replace it.
Question 3
A) Biodiversity is measured by (1 point)
only analyzing animal species that interact within an ecosystem.
counting the total number of one species population and how they interact within an ecosystem.
counting the number and variation of different species of plants, animals, and other organisms that
interact within an ecosystem.
examining the usefulness of a specific trait in a species that interacts within an ecosystem.
Question 4
A) Which statement best describes ecological health? (1 point)
Ecosystem biodiversity determines ecological health via the types of different organisms in the area.
Ecosystem biodiversity determines ecological health via the amounts of different organisms in the
area.
Ecological health concerns the relationship among ecosystems, ecosystem services, and human
health.
Ecological health concerns the relationship between ecosystems and ecosystem services

Answer 1

Question 1

A) The animal whose absence would have the greatest negative effect on the ecosystem is the wolf. Wolves are apex predators in this ecosystem, and their removal would lead to an increase in the populations of rabbits and foxes, which could result in overgrazing and other imbalances.

Question 2

A) In an ecosystem with low biodiversity, the removal of a species will not affect the ecosystem because another species will not be able to replace it. Low biodiversity typically means that species have limited functional redundancy, so the absence of a species may cause more significant disturbance.

Question 3

A) Biodiversity is measured by counting the number and variation of different species of plants, animals, and other organisms that interact within an ecosystem. This encompasses both the variety and the abundance of species.

Question 4

A) The statement that best describes ecological health is Ecological health concerns the relationship among ecosystems, ecosystem services, and human health. This encompasses the overall well-being of ecosystems and their ability to provide services that are crucial for human survival and quality of life.