Students trace energy through ocean and forest food webs. Part A has nine fill-ins covering phytoplankton as ocean producers, a hawk-snake-mouse chain reaching the tertiary consumer level, and the role of decomposing bacteria on the ocean floor. Part B is a four-pair matching set placing oak tree, caterpillar, owl, and mushroom into producer, primary consumer, secondary consumer, and decomposer roles.
Sorting real organisms into trophic roles across two different ecosystems builds flexible thinking about how the same energy patterns show up in very different habitats.
Style:
Food Webs and Energy
Part A: Fill in the Blank
Write the missing word or number on each line.
1. In an ocean food web, tiny floating plants called phytoplankton are the main producers.
2. A hawk that eats a snake that ate a mouse is a tertiary consumer.
3. Trees, grasses, and shrubs are all producers in a forest food web.
4. Small fish that eat zooplankton are secondary consumers in an ocean food web.
5. Energy is lost as heat when organisms use it for movement and body heat.
6. A omnivore is an organism that eats both producers and other consumers.
7. Bacteria on the ocean floor act as decomposers by breaking down dead organisms.
8. The transfer of energy from one organism to another is called energy flow.
9. Owls, foxes, and wolves are examples of predators in a forest ecosystem.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each organism to its role in a food web.
oak tree
→ producer
secondary consumer
caterpillar
→ primary consumer
decomposer
owl
→ secondary consumer
producer
mushroom
→ decomposer
primary consumer
Food Webs and Energy
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) In an ocean food web, tiny floating plants called phytoplankton are the main producers.
2) A hawk that eats a snake that ate a mouse is a tertiary consumer.
3) Trees, grasses, and shrubs are all producers in a forest food web.
4) Small fish that eat zooplankton are secondary consumers in an ocean food web.
5) Energy is lost as heat when organisms use it for movement and body heat.
6) A omnivore is an organism that eats both producers and other consumers.
7) Bacteria on the ocean floor act as decomposers by breaking down dead organisms.
8) The transfer of energy from one organism to another is called energy flow.
9) Owls, foxes, and wolves are examples of predators in a forest ecosystem.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each organism to its role in a food web.
oak tree
→ producer
secondary consumer
caterpillar
→ primary consumer
decomposer
owl
→ secondary consumer
producer
mushroom
→ decomposer
primary consumer
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