15
QuizMultiple Choice

Introduction to Ecology — Test

Question 15 • CMS 2026-2027 Biology CREDIT RECOVERY

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

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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