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Build a Food Chain

Read at your own pace. Try the practice, then continue your course.

Trace how energy moves from one organism to another and learn what arrows in a food chain mean.

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THE CURIOSI · EXPLORE & TRY

Read the arrows: food → eater

Explore the model, then test your understanding. Select each numbered stop to discover its role.

Read the arrows: food → eater: Grass, Grasshopper, Frog, Snake. Explore the numbered stops below for explanations. 1. Grass2. Grasshopper3. Frog4. Snake
A simplified relationship map. Explore each labelled part below.
1Grass

Grass uses sunlight to make food. It is the producer in this example.

2Grasshopper

A grasshopper eats grass and receives stored energy from it.

3Frog

A frog eats the grasshopper and receives energy from its food.

4Snake

A snake may eat the frog. These are example relationships, not every species’ diet.

Simplified model: real ecosystems have more connections. Food-chain arrows show energy moving from food to eater; nutrient-cycle arrows describe material transfer.

Quick check · 3 questions

Choose one answer for each question, then check. Practice results stay on this page and do not change course completion.

1. The arrow grass → grasshopper means…
2. Which is the primary consumer in this chain?
3. Does all stored food energy reach the next consumer?

Read the answer explanations
  1. Food-chain arrows point from food to eater, showing energy transfer.
  2. A primary consumer eats the producer.
  3. Organisms use energy for life processes; some energy is released as heat.

Explore further: NOAA: aquatic food webs.

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