VIRTUAL BIOLOGY LAB · LAB 40

🕸️ Food Web and Energy Transfer

Build a food web and explore how energy moves through trophic levels.

CBSE Classes 9–10Interactive practicalDrag & drop challengeStudent notebook

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🔎 Learning objective

Build a food web and explore how energy moves through trophic levels.

3Hands-on matches

1Knowledge check

🧬 Interactive laboratory workspace

Explore the biological idea using the model controls. This is a conceptual classroom simulation.

🕸️

Food Web and Energy Transfer

Energy flows from producers to consumers and decomposers; only a fraction is transferred to the next trophic level.

PRACTICAL WORKBENCH · EXPERIMENT 40

🧪 Ecosystem modelling station: Build and test a food web

Only a fraction of energy is transferred between trophic levels; energy is lost through respiration and other processes.

Ready to begin

APPARATUS & EXPERIMENT CONTROLS

01 · Set up apparatus02 · Adjust variables03 · Run trial04 · Record reading

Primary productivity Trophic transfer Species population

◉Energy flow▤

OBSERVATION & MEASUREMENTS

Primary productivity—

Trophic transfer—

Species population—

Energy available—Awaiting run

Only a fraction of energy is transferred between trophic levels; energy is lost through respiration and other processes.

Scientific interpretation will appear after the trial.

Scientific note: Adjust producer energy and trophic transfer, then observe energy available at higher trophic levels.

Model conditionObservation focus

Model ready. Choose a condition and run the model to see an observation.

🧪 Hands-on drag & drop challenge

PRACTICAL SKILL BUILDER

Drag each item from the tray to its correct destination. On a phone or tablet, tap an item and then tap its destination. Complete all three matches to finish.

🧰 MATERIALS & CONCEPTS

🎯 DROP ZONES

Choose an item and place it in the matching zone.

📓 Observation notebook

Record your observation and export it for revision.

Key concept: Energy flows from producers to consumers and decomposers; only a fraction is transferred to the next trophic level.

🎯 Quick knowledge check

Energy transfer between trophic levels is:

Select one answer to check your understanding.

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