Ecosystem Dynamics Test: Section A

How do organisms get the energy they need for growth and other activities?

• By breathing air

• By eating other organisms

• By drinking water

• By photosynthesis

Where do plants get their food from?

• By absorbing minerals from the soil

• By hunting other animals

• By drinking water

• By making it through photosynthesis

What is the primary energy source for most life on earth?

• Geothermal energy

• Wind energy

• Solar energy

• Nuclear energy

What is the role of producers in an ecosystem?

• Break down dead matter

• Supply energy for other living things

• Hunt other animals for food

• Absorb nutrients from the soil

What type of consumer eats only plants?

• Detrivore

• Carnivore

• Omnivore

• Herbivore

What is the role of decomposers in an ecosystem?

• Produce food through photosynthesis

• Break down dead/decay matter

• Feed on other organisms

• Absorb nutrients from the soil

Where does digestion occur in fungi that act as decomposers?

• In the stems

• Internally

• Externally through rootlike structures

• In the leaves

What is a food chain?

• A network of feeding relationships

• A series of steps in which organisms transfer energy

• A path of energy transfer from producers to consumers

• A network of complex feeding relationships

How is energy transferred among organisms in a food chain?

• By absorbing nutrients from the soil

• By eating other organisms

• By drinking water

• By hunting for food

What do food webs show in an ecosystem?

• A series of steps in energy transfer

• A path of energy transfer from producers to consumers

• Complex connections of energy and nutrients

• Feeding relationships among organisms