Chap. 18 Ecology

Which trophic level has the most organisms?

• Primary producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

Which of these is an abiotic factor?

• Trees

• Deer

• Water

• Moss

This is an organism that eats plants

• Tertiary consumer

• Primary producer

• Secondary consumer

• Primary consumer

This is a biotic factor.

• Water

• Air

• Bones

• Rocks

Which is an organism that eats dead organisms?

• Detritivore

• Decomposer

• Predator

• Herbivore

Nitrogen fixing bacteria live in ...

• animals.

• water.

• root nodules and soil.

• fungi.

The place where an organism lives.

• Niche

• Habitat

• Resource

• Trophic Level

This is the amount of energy that is LOST when moving from one trophic level to another.

• 10%

• 50%

• 1%

• 90%

The rate at which biomass accumulates.

• Net Primary Productivity

• Carrying Capacity

• Gross Primary Productivity

• Limiting Resource

The internal conditions of this organism are determined by the environment.

• Predator

• Regulator

• Conformer

• Herbivore