About Stomata Sprint

Open and close guard cells to balance photosynthesis and water loss in this free online plant biology game about stomata.

Stomata Sprint is a free online plant biology game where you pump potassium ions to swell guard cells open for CO2 intake then clamp shut against dry heat waves. This botany game makes you the valve operator of a leaf.

Stomata are microscopic pores that trade gases for the whole plant. Guard cells inflate when potassium pumps drag water in by osmosis, bowing open to let CO2 reach photosynthesis. But every open pore leaks water vapor through transpiration and a plant that ignores the tradeoff wilts or starves.

The sprint is the daily dilemma of plant life. Open too long in heat and hydraulic failure kills the leaf; stay shut and carbon starvation halts growth. Stomatal control is why drought-resistant crops, CAM photosynthesis in cacti and greenhouse humidity management all revolve around this tiny valve you now command.

Key Science Concepts

• Guard cell turgor control
• Potassium ion pumping and osmosis
• CO2 uptake for photosynthesis
• Transpiration water loss
• Stomatal aperture regulation
• Drought response tradeoffs

What You'll Learn

• Explain how guard cells open and close stomata
• Describe the CO2 versus water loss tradeoff
• Connect stomatal behavior to photosynthetic rate
• Relate pore control to drought survival strategies

Grade Level: Middle School, High School

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How to play

1. Pump Turgor Click canvas or hold Spacebar to pump potassium and swell guard cells open for carbon intake.
2. Watch Hydration Water vapor transpires while open. Collect dew droplets to replenish moisture.
3. Clamp Heat When warning sirens flash, release to seal pores shut and safely deflect thermal gusts.
4. Pop Spores Tap airborne fungal spores in flight to destroy pathogens before they enter pores.
5. Glucose Rush Absorb CO2 to charge your meter and unleash Glucose Rush with 3x score multiplier.

Frequently asked questions

Is Stomata Sprint free to play?

Yes. Stomata Sprint is completely free to play in your browser. There is no download, install or account needed.

What grade level is Stomata Sprint for?

Stomata Sprint is designed for Middle School, High School students and works well as a classroom activity or homework.

Does Stomata Sprint work on phones and tablets?

Yes. Stomata Sprint runs in any modern browser on desktop computers, Chromebooks, tablets and phones in landscape mode.

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