Food Chains and Webs (KS2 Science)

SC3Food Chains and Webs

Follow the energy — arrows point to the eater.

Food chains show how energy passes from plants to animals; the arrows show the direction of energy flow.

A simple food chain.

🌱 grass→🐛 caterpillar→🐦 bird→🦊 fox

each arrow means 'is eaten by' — energy flows this way →

Arrows always point TO the eater, showing which way the energy travels.

Learn the Roles

1Producers start every chain.

Green plants make their own food using sunlight (photosynthesis). They’re always first.

🌱 producer

2Consumers eat.

Herbivores eat plants; carnivores eat animals; omnivores eat both. First consumer, second consumer…

🐛 → 🐦 → 🦊 consumers

3Arrows show energy flow.

grass → caterpillar means the caterpillar eats the grass and gains its energy. The arrow points to the EATER.

→ points to the eater

💡 Key IdeaThe arrow's direction is the classic exam trap: it points from the food TO whatever eats it — the direction energy moves, never the other way.

Worked Example

In the chain lettuce → slug → hedgehog, what is each living thing's role?

Lettuce

makes its own food →

producer

Slug

eats the lettuce →

1st consumer (herbivore)

Hedgehog

eats the slug →

2nd consumer

Watch Out! Common Mistakes

Arrows pointing the wrong way.

🦊 → 🐦 ✕

Reverse it! The bird is eaten by the fox: 🐦 → 🦊. Arrows follow the energy INTO the eater.

Starting a chain with an animal.

Producers first! Every food chain begins with a plant (or other producer) — the original source of the energy from sunlight.

Thinking food webs are separate.

A web is joined chains! Most animals eat several things, so real ecosystems are food WEBS — many chains linked together.

⬇ Cheat Sheet

FOOD CHAINS AND WEBS

Every chain starts with a producer (a plant).
Consumers eat: herbivore, carnivore, omnivore.
Arrows point TO the eater = direction of energy flow.
A food web is many food chains joined together.

Example: grass → caterpillar → bird → fox (arrows to the eater).

📖 Continue Your Journey

✓ SC1 Classifying Living Things ✓ SC2 Habitats and Adaptation SC3 Food Chains and Webs SC4 The Skeleton and Muscles SC5 Digestion and Teeth SC6 The Circulatory System SC7 Plants and Photosynthesis SC8 Life Cycles and Reproduction SC9 States of Matter and the Water Cycle SC10 Materials and Their Properties SC11 Reversible and Irreversible Changes SC12 Forces and Magnets SC13 Light and Shadows SC14 Sound SC15 Electricity and Circuits SC16 Earth and Space

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Next Lesson: SC4 The Skeleton and MusclesA frame that supports, protects and moves you.

📄 Free printable: Download the Food Chains and Webs cheat sheet (PDF) — keep it by your child's desk.

Quick summary

Food chains start with a producer — a plant that makes its own food.
Consumers eat: herbivores, carnivores and omnivores.
Arrows point to the eater, showing the direction energy flows.
A food web is many food chains linked together.

Frequently asked questions

Which way do food chain arrows point?

Towards the eater — grass → rabbit means the rabbit eats the grass. The arrow follows the energy from the food into whatever consumes it.

What is a producer?

A green plant that makes its own food from sunlight by photosynthesis — the starting point and energy source of every food chain.

What is the difference between a food chain and a food web?

A food chain is a single line of who-eats-whom; a food web joins many chains, because most animals eat more than one thing.

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