Flow of Energy: Organism

Autotrophs are organisms that produce their own food. Which do scientists classify as autotrophs?

• Chordates

• Fungi

• Plants

• Molds

What is the first source of energy for almost all food webs?

• Plants

• Sunlight

• Mineral in the soil

• Decomposers

Which of the following would provide the most energy in an ecosystem?

• Producers
• Herbivore
• Omnivore
• Carnivore

An organism that obtains energy by eating other organisms.

• Consumer
• Producer
• Decomposer
• Detriov

If the sun were removed from this ecosystem, what would occur?

• Green plants would increase.

• Only weasels would decrease.

• Hawks and owls would increase.

• Everything would die out

Which of these describes the energy transfer taking place as this chipmunk eats the berries?

• Sugars produced by light energy are converted into usable energy

• Usable energy is converted into light energy through photosynthesis

• Sugars produced by ATP are converted into stored chemical energy

• Light energy converts CO2 and water into stored chemical energy in glucose

What is a heterotroph?

• An organism that produces its own food

• An organism that gets nutrients from other organisms

• An organism that does photosynthesis

• An organism that uses chemicals to produce its own food

How is the flow of energy in an ecosystem different from the flow of nutrients?

• Energy can be recycled, while nutrients are not.

• Energy and nutrients flow in the same way in an ecosystem.

• Energy flows from producer to consumer, while nutrients flow from consumer to producer

• Energy flows in one direction, but nutrients are recycled.

Organisms that create their own energy from sunlight or chemicals

• Herbivore
• Omnivore
• Autotroph
• Heterotroph 

1.

What are the reactants of cellular respiration in plants?

• carbon dioxide and water

• glucose and carbon dioxide

• the reactants of the electron transport chain

• oxygen and glucose