Population Ecology Test Practice

Front

A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population.

Back

Genetic Drift

Front

Five hundred years after the deer had established a flourishing population in the park, a few of them venture back to their original woods and have babies with the deer there. Options: Genetic Drift, Mutations, Non-random mating, Gene flow

Back

Gene flow

Front

Wolves from the Arizona mesa were transferred to the Colorado Rockies after a forest fire destroyed their habitat. They quickly became part of the local pack and had offspring. Options: Mutation, Natural Selection, Genetic Drift, Gene Flow

Back

Gene Flow

Front

7 Wild Mustangs were taken from the prairies of Iowa after a Texan Rancher purchased them and provided them with their own pasture. Those 7 Mustangs eventually became 122. What evolutionary process does this scenario illustrate?

Back

Genetic Drift

Front

What effect will an invasive species have on the carrying capacity of an ecosystem?

Back

The carrying capacity will only decrease for those in competition for the same resource.

Front

What causes the fast growth of the invasive field mouse population in Australia? Options: A. The mice like to reproduce, B. A lack of a native species to eat the field mouse, C. Abundant food supply, Both B and C

Back

Both B and C

Front

When an ecosystem grows after a glacier recedes, is this primary or secondary succession?

Back

Primary succession because it grows from bare rock.

Front

What would increase the carrying capacity of an ecosystem? Options: increase in predators, disease, increase in available food, drought

Back

increase in available food

Front

What was the most likely reason for the decline in the deer population after 1924 in the Kaibab Plateau?

Back

The increased number of deer led to increased competition for resources.

Front

Why is biodiversity important to ecosystems?

Back

It helps populations adapt to ecological changes.