A group of the same type of organisms living in the same place at the same time are known as a __________.

• Ecosystem

• Population

• Community

• Limiting factor

Which of these is a biotic factor?

• Sunlight

• Air

• Bacteria

• All of the above

Which organism do the owl and the weasel compete for in the food web?

• Hawk
• Spider
• Grasshopper
• Shrew

A frog eats a fly. The frog is demonstrating ________.

• Mutualism

• Competition

• Predation

• Parasitism

Bacteria and fungi typically serve what role in an ecosystem?

• Herbivores

• Carnivores

• Omnivores

• Decomposers

An organism that gets energy from eating other organisms is a ______________.

• Producer

• Consumer

• Decomposer

• Prey

A connection of food chains with many energy paths in an ecosystem is a ____________.

• Ecosystem

• Food web

• Environment

• Population

The diagram is intended to show relationships in an ecosystem. What do the arrows represent?

• The direction of population migration
• Differences in dietary habits
• Progressively smaller organisms
• The direction of the energy flow

Grass is considered a ...

• Consumer

• Producer

• Decomposer

• Composer

What does a food chain represent?

• How all living organisms within a ecosystem are connected.

• All of the things that a particular animal eats.

• How plants create their own food.

• A single path of energy transfer within an ecosystem.