Powers 7th Assessment MS LS2-3

First & Last Name

1. What do the arrows in a food web show?

• The arrow points to the organism that is about to be eaten
• The longer arrows show more force being used to consume an organism
• The arrows show the direction of the flow of energy in a food chain
• The arrows indicate the time of day the organism is consumed

2. An animal that eats carrion is known as

• Detritivore
• Omnivore
• Carnivore
• Carrionivore

3. Producers are

• Organisms that can produce light
• Organisms that can produce their own heat
• Organisms that produce offspring
• Organisms that produce their own food

4. Why are decomposers important to an ecosystem?

• They help ensure the prey population does not get too large
• They break down dead and decaying animal and plant matter and return nutrients to the soil
• They make the apex predators stronger
• They can produce their own food using sunlight

5. The top predator in a food web

• Is the primary consumer
• Is always an omnivore
• Is known as an apex predator
• Is always a mountain lion

6. A food web shows

• One path of energy flowing an ecosystem
• That energy available decreases as more organisms are consumed
• Multiple paths of energy flow within an ecosystem
• All the possible consuming relationships within an ecosystem

7. All energy flow in an ecosystem begins with sunlight.

• True
• False

8. What organisms in this food web are primary consumers?

• snowy owl, snowshoe hare, and lemming
• snowshoe hare, ermine and lemming
• lemming, snowshoe hare and caribou
• snowshoe hare only

9. Which statement is true based on the diagram?

• Snowy owls are both predator and prey
• Wolves are omnivores
• Caribou eat lemmings
• Energy flows from the lemming to snowy owl