Course

Ecology

Study Pack

Set 9 Population Regulation

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Question 1

(Multiple Choice)

Free
The effect of wolves on elk in Yellowstone is an example of

A) a bottom-up interaction.
B) a top-down interaction.
C) symbiosis.
D) trophism.
E) none of the above

Answer

Question 2

(Multiple Choice)

Free
Which of the following are characteristics of biological control agents?

A) a broad host range
B) low reproductive pontential
C) life-cycle synchrony
D) bottom-up control
E) none of the above

Answer

Question 3

(Multiple Choice)

Free
In the equation dN/dt = rN(1-N/K),

A) r is the net reproductive rate.
B) K is the carrying capacity.
C) dN/dt is simplified to N/t.
D) the term 1-N/K models top-down effects.
E) none of the above

Answer