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Food-chain worksheet with answer key
Build a food-chain card diagram and explain each arrow. Includes organism roles, short questions and an answer key.
This worksheet is ready to print: use your browser’s print command (Ctrl+P or ⌘P). The answer key for teachers is at the end and starts on a new sheet when printed. The full lesson is on the lesson page. Food chains and food webs (Grade 5)
Phase C · Primary grade 5; Phase C · IPASPhase C · Primary grades 5–6 · IPASPhase D · Lower secondary grade 7; Phase D · IPA
Download the complete teacher pack (offline HTML) ↓
Learning goals
- Students can explain arrows as energy transfer.
- Students can compare producers, consumers and decomposers.
- Students can build two rice-field routes with evidence for each link.
- Students can express predictions conditionally.
Short reading
A food chain shows one route of energy transfer through feeding. Arrows point from the organism eaten to its consumer. Interconnected routes form a food web.
- Plants in these examples are producers through photosynthesis.
- Consumers obtain food from other organisms.
- Rice → rat means that the rat eats the rice.
- Consumer level depends on the feeding route being followed.
- Decomposers act on remains from multiple levels.
- A food-chain diagram is a model; each link needs evidence.
Activity 1
Use the lesson’s two rice-field routes. State the requested role, relationship or symbol meaning.
| No | Model item | Your answer |
|---|---|---|
| 1 | Rice | |
| 2 | Rat eating rice | |
| 3 | Snake eating the rice-eating rat | |
| 4 | Eagle after snake on route A | |
| 5 | Grasshopper eating rice | |
| 6 | Frog eating the grasshopper on route B | |
| 7 | Eagle after frog on route B | |
| 8 | Decomposing bacteria and fungi | |
| 9 | Seagrass → dugong | |
| 10 | Rat → barn owl |
Activity 2
- Explain arrow direction with one example.
- Write the two lesson rice-field routes.
- Why should decomposers not appear only after the eagle?
- How does an organism list differ from a food web?
- What limits a prediction about fewer rats?
Reflection
Which arrow most needs rechecking?
What evidence would you need to add a new relationship?
Answer key (for teachers)
Activity 1
- Rice: Producer
- Rat eating rice: Primary consumer
- Snake eating the rice-eating rat: Secondary consumer
- Eagle after snake on route A: Tertiary consumer
- Grasshopper eating rice: Primary consumer
- Frog eating the grasshopper on route B: Secondary consumer
- Eagle after frog on route B: Tertiary consumer
- Decomposing bacteria and fungi: Decomposers
- Seagrass → dugong: The dugong eats seagrass
- Rat → barn owl: The barn owl eats the rat
Activity 2
- Explain arrow direction with one example. Rice → rat shows food energy moving from the rice eaten to the rat.
- Write the two lesson rice-field routes. Rice → rat → snake → eagle; rice → grasshopper → frog → eagle. These are teaching models, not a survey of one field.
- Why should decomposers not appear only after the eagle? Rice and every animal can also leave remains that decompose.
- How does an organism list differ from a food web? A list names organisms; a web shows evidence-supported feeding links.
- What limits a prediction about fewer rats? The model indicates possible effects on predators and food, but provides no quantities, alternative diets or certain outcomes.
Sources: Kemendikbudristek — IPAS Kelas V (Edisi Revisi 2024), Bab 3 ↗ · Keputusan Kepala BSKAP No. 046/H/KR/2025, CP IPA Fase D ↗ · Kemendikbudristek — IPA Kelas VII (Edisi Revisi 2023), Bab VI — hlm. 167 ↗ · Dinas Pertanian, Ketahanan Pangan dan Perikanan Kabupaten Buleleng — Waspada Hama Tikus! Musuh Utama Tanaman Padi yang Sering Diabaikan (2026) ↗ · Dinas Pertanian, Ketahanan Pangan dan Perikanan Kabupaten Buleleng — Tikus dan Pengendaliannya (2022) ↗ · BBPPTP Medan (Ditjen Perkebunan, Kementerian Pertanian) — Pengembangan Burung Hantu dalam Pengendalian Hama Tikus ↗ · Kementerian Pertanian — Oxya spp., Hama Eksotik Tanaman Padi ↗ · University of Michigan, Animal Diversity Web — Spilornis cheela ↗ · University of Michigan, Animal Diversity Web — Dugong dugon ↗ · University of Michigan, Animal Diversity Web — Bubulcus ibis ↗
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