DCA 3 Ecosystems Class Review

Front

What is a limiting factor in an ecosystem?

Back

A limiting factor is a resource or condition that limits the growth, abundance, or distribution of an organism or a population within an ecosystem.

Front

Which of the following is NOT a limiting factor?

Back

Species color is not a limiting factor; limiting factors include climate, available food & water, and available space & shelter.

Front

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

Back

The population size decreases.

Front

Predict the effect on the snowshoe hare population when the Canadian lynx population declines.

Back

The snowshoe hare population will most likely increase due to reduced predation.

Front

What is the relationship between food availability and population growth in an ecosystem?

Back

If there is more food than usual, the population will most likely increase.

Front

Define a consumer in an ecosystem.

Back

A consumer is an organism that obtains energy by consuming other organisms.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food, typically through photosynthesis, such as plants.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil and helping to recycle matter in the ecosystem.

Front

What is carrying capacity?

Back

Carrying capacity is the maximum number of individuals of a particular species that an environment can support sustainably.

Front

How does climate affect ecosystems?

Back

Climate influences the types of organisms that can survive in an ecosystem, affecting biodiversity and population dynamics.