Biology Practice Final Exam FA24

Front

What is a keystone species?

Back

A species that maintains biodiversity by controlling prey populations.

Front

What is a density-dependent limiting factor?

Back

A factor that affects population size based on the density of the population, such as competition.

Front

What happens to a population when the death rate exceeds the birth rate?

Back

The population will shrink.

Front

What is mutation?

Back

A random change in the genetic material of an organism.

Front

What are invasive species?

Back

Species that are introduced to a new environment and disrupt the local ecosystem.

Front

What is an apex predator?

Back

A predator at the top of the food chain that has no natural enemies.

Front

Define competition in an ecological context.

Back

The struggle between organisms for the same resources in an ecosystem.

Front

What is biodiversity?

Back

The variety of life in a particular habitat or ecosystem.

Front

What is a limiting factor?

Back

Any factor that restricts the size of a population.

Front

What is the difference between native and non-native species?

Back

Native species are those that naturally occur in a region, while non-native species are introduced from other areas.