Ecosystem

Something important is missing from this food web! The grass starts this food web. But the plant's energy comes from __________, the one picture that is missing from the food web.

• water

• the sun

• the air

• the soil

What happens to the amount of available energy in the food chain as it moves up through the different levels?

• it increases

• it decreases

• it remains the same

• it decreases, then increases

All of the factors listed are abiotic factors of this underwater ecosystem EXCEPT the

• sunlight

• water currents

• fish population

• water temperature

How many carnivores are shown in this food web?

• 6

• 4

• 5

• 3

The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that produces its own food. A consumer is an organism in a food chain that obtains energy from producers or other consumers; consumers may be herbivores or carnivores.

Which food chain correctly describes the flow of energy in an ecosystem?

• grass → grasshopper → fish → human

• grasshopper → fish → human

• human → fish → grasshopper

• human → grasshopper → fish → grass

_______ are consumers that eat only meat.

• Herbivore
• Omnivore
• Carnivore

________ are consumers that eat plants and meat.

• Herbivore
• Omnivore
• Carnivore

Which organisms would be the energy for the hawk?

• rabbit, shrew, and snake

• rabbit, snake, and grasshopper

• shrew, snake, and insect eating bird

• grass, rabbit, and insect eating bird

Which group do fungi, bacteria, and termites belong to?

• decomposers
• producers
• herbivores
• omnivores

A __________ includes all living and non-living things in an environment. 

• population
• niche
• abitotic
• ecosystem