Ecology Test Review

Which list of terms is in the correct order, from simplest to most complex?

• organism, community, population, ecosystem, biome

• organism, population, community, biome, ecosystem

• organism, population, community, ecosystem, biome

• organism, community, ecosystem, population, biome

As the resources decrease in an ecosystem, the competition level _______________

• Decreases

• Increases

• Stays the same

What is symbiosis?

• anything that limits the size of the populations

• relationships between species

• a relationship in which both species benefit

• a relationship in which one species benefits and one is harmed

 All biotic and abiotic things that interact in an area make up a(n)

• ecosystem

• biome

• biosphere

• community

The particular role of an organism including the type of food it eats, how it obtains food, and how it interacts with other organisms is called its ___________________.

• niche

• habitat

• trophic level

• none of these

Which are considered biotic factors?

• Snail

• Pond Water

• Lily Pad

• Rock

• Dragonfly

A group of zebras represent what level of ecology?

• organism

• population

• community

• ecosystem

Exponential growth occurs when ____________.

• a population grows at an increasing rate.

• a population declines.

• a population has no change.

• there is no emigration.

 Sometimes a population cannot grow to its biotic potential due to environmental conditions called _______________________.

• Biomes

• Limiting Factor

• Symbiosis

• Carrying Capacity

 A disease kills most members of a predator population. What is MOST LIKELY the effect on the prey population?

• It will also be killed by disease

• It will decrease in size

• It will greatly increase in size

• It will not be affected by the change in the predator population