Week 1 - Energy Transfer in Ecosystem

What is the term for an organism that can produce its own food using elements from soil and air and solar energy?

• Heterotroph

• Carnivore

• Autotroph

• Omnivore

Which term refers to a model that shows all the possible feeding relationships at each trophic level in an ecosystem?

• Food web

• Trophic level

• Biomass

• Food chain

What is the name for a heterotroph that eats only plants?

• Carnivore

• Herbivore

• Omnivore

• Detritivore

What type of organism is a squirrel?

• Heterotroph

• Autotroph

• Omnivore

• Carnivore

What do ecological pyramids show that food webs and food chains do not show?

• Number of organisms at each trophic level

• Feeding relationships at each trophic level

• Energy transfer through the pyramid

• Energy and biomass decrease as you go up the trophic levels

What is the term for an organism that eats both plants and animals?

• Herbivore

• Carnivore

• Detritivore

• Omnivore

What is the process by which autotrophs change energy from the sun into chemical energy?

• Using elements from soil and air and solar energy

• Eating plants

• Chemical reactions that occur

• Decomposing dead organisms

What is the term for a heterotroph that eats only plants and animals?

• Herbivore

• Carnivore

• Detritivore

• Omnivore

What do food webs show that food chains do not show?

• Number of organisms at each trophic level

• Energy and biomass decrease as you go up the trophic levels

• Matter and energy move through an ecosystem

• Feeding relationships at each trophic level

What is the term for an organism that decomposes dead organisms?

• Omnivore

• Detritivore

• Herbivore

• Carnivore