Ecology Test Review

All organisms of the same species in an area make up that

• biome

• community

• ecosystem

• population

What is another word that can be used to describe a heterotroph

• Producer

• Consumer

• Autotroph

How are producers dependent on other organisms?

• they are green

• they depend on the sun for energy

• they depend on decomposers for breaking down essential nutrients.

• energy is made from minerals in the soil

The autotrophs in the community are the

• grasshoppers

• grass

• frogs

• snakes

Which is a food chain represented in the diagram?

• Mice->grass->grasshoppers->frogs

• sparrows->hawks->frogs->rabbits

• grass->grasshoppers->frogs->snakes

• foxes->rabbits->snakes->sparrows

If rabbits were removed from the community, one would expect a decrease in

• grasshoppers

• foxes

• frogs

• grass

If frogs were removed from this community, one would expect an increase in the number of...

• grasshoppers

• sparrows

• hawks

• rabbits

Two apple trees are planted near each other, especially during drought. Which symbiotic relationship is this?

• Mutualism

• Competition

• Parasitism

• Commensalism

A hummingbird pollinating a flower is an example of which symbiotic relationship.

• Mutualism

• Commensalism

• Predation

• Parasitism

According to the graph, when the predator population decreases, the prey population

• Increases

• Decreases

• Stays the same