10
QuizMultiple Choice

Ecology — Test

Question 10 • Biology

A mountain lion population recently experienced a drop in population size. Which of the following would best describe the limiting factor that is involved?

Answer
A
The population of Trichinella , a parasite, experienced a decline.
B
Mountain lion hunting experienced an increase in restrictions.
C
A change occurred in the genetic variability.
D
The deer population experienced a rapid decline due to a parasite.

Explanation

A limiting factor is something that reduces a population’s survival or reproduction. Mountain lions depend on deer for food, so a rapid decline in the deer population would leave them with less food and could cause their numbers to drop. Increased hunting restrictions would generally help mountain lions, while a decline in a parasite would usually reduce disease pressure.

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