Populations and Interactions

Front

What causes the rise in prey numbers in a predator-prey relationship?

Back

A decrease in predators leads to an increase in prey numbers.

Front

A flea is an example of a _____________ because it does harm to the host it is living on.

Back

parasite

Front

What is it called when organisms try to obtain the same resources?

Back

Competition

Front

The average number of individuals of the same species per unit of surface area at a given time is called _____________.

Back

population density

Front

What may cause exponential growth in a population?

Back

Resources become abundant.

Front

Define 'population density'.

Back

The number of individuals of the same species per unit area.

Front

What is 'competition' in ecological terms?

Back

The struggle between organisms to obtain the same resources.

Front

What is a 'predator'?

Back

An organism that hunts and eats other organisms.

Front

What is a 'prey'?

Back

An organism that is hunted and eaten by predators.

Front

What is 'carrying capacity'?

Back

The maximum number of individuals of a species that an environment can support.