Ecosystems Chapter 2

Some of the sugars made during photosynthesis are used immediately by producers. What do these sugars provide?

• sunlight

• energy

• starch

• oxygen

• water

What is this?

• food web

• consumer web

• energy pyramid

• trophic chain

Which organisms produce food and provide it to the rest of the organisms living in the same ecosystem?

• omnivores

• consumers

• decomposers

• producers

Cellular respiration and __________ are related. The products of one process are the reactants of the other.

• transpiration

• photosynthesis

• combustion

Mushrooms are important in an ecosystem because they break down dead material. They are called_________.

• herbivores

• carnivores

• decomposers

• producers

What would happen to the fish and frog populations if the heron population in the below food web decreases? Select all that apply.

• frog population would decrease

• fish population would decrease

• fish population would increase

• frog population would increase

Which trophic level do producers occupy in a food chain?

• first trophic level

• second trophic level

• third trophic level

• fourth trophic level

What are consumers that eat plants? For example, a squirrel.

• viruses

• parasites

• carnivores

• herbivores

In ecosystems where sunlight is not available, where do producers get their energy from?

• plants

• chemicals

• animals

• water

What do the arrows in a food chain represent?

• the movement of animals

• the food energy transfer

• the movement of oxygen

• the movement of plants