Photosynthesis: Solar Power for Life
Go beyond the basics of 'sun meets leaf' to discover how plants actually capture light and turn it into fuel. Learn how the green world breathes and powers almost every living thing on Earth.
Like Duolingo, but for Photosynthesis: Solar Power for Life. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 26 levels across 3 sections, about 52 minutes end to end, roughly 10 days at five minutes a day. It moves through Catching the Sun's Energy, Building Sugar from Thin Air, and The Big Picture: Energy for the Planet. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android

Key ideas in Photosynthesis: Solar Power for Life
- Chloroplasts are organelles inside plant cells
- Specialized hubs for photosynthesis
- Efficiency of grouped tools
- Thylakoids
- The stacked shape of internal membranes creates more 'landing zones' for light within a tiny volume.
- More surface area inside the organelle means the plant can capture more energy without needing to grow larger.
- Why plants concentrate energy production in chloroplasts rather than using the whole cell surface
- The hierarchy of light-catching structures from the leaf down to the internal membranes
- The color we see is the light that the plant could not use and reflected away.
- Different pigments act like different sized nets to catch various light colors.
- Pigments only capture the energy from the specific colors of light they absorb.
- Multiple pigments allow a plant to harvest energy from a larger portion of the solar spectrum.
- The relationship between pigment color and light absorption
- The evolutionary advantage of having a diverse pigment profile
- Each pigment type specializes in catching a specific 'slice' of the rainbow.
- The hierarchy of light-catching structures
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Photosynthesis: Solar Power for Life the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Instead of using the whole cell surface, why does a plant use specific organelles for photosynthesis?
Get it right to open this lesson and 25 more in the app.
How to learn Photosynthesis: Solar Power for Life, step by step
Go in order. 26 short levels across 3 sections, about 52 minutes in all, five minutes a day.
- 1
Catching the Sun's Energy
- The Solar Panel: Inside the Chloroplast
- Pigments: Why Leaves Aren't Just Green
- Splitting Water to Release Oxygen
- Storing Energy in Tiny Batteries
- 2
Building Sugar from Thin Air
- Inhaling Carbon: How Leaves Breathe
- The Sugar Factory: Turning Gas into Solid
- Recycling Molecules to Keep the Cycle Moving
- Storing the Harvest: From Sugar to Starch
- Night Shift: What Happens When the Sun Goes Down
- How Heat and Drought Change the Game
- 3
The Big Picture: Energy for the Planet
- Why Almost All Food is Solar Powered
- Balancing the Atmosphere's Carbon
- The Limits of Growth: Light, Water, and Air
3 sections · 13 units · 26 levels. Built to play, not to enroll.
Questions about Photosynthesis: Solar Power for Life
How do I learn Photosynthesis: Solar Power for Life?
Go in order: start with Catching the Sun's Energy, then Building Sugar from Thin Air, then The Big Picture: Energy for the Planet. On Tomo that's 26 short levels, about 52 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Photosynthesis: Solar Power for Life?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Photosynthesis: Solar Power for Life is one of its free courses, and you can type any other topic to get a course of your own.
Is the Photosynthesis: Solar Power for Life course free?
Yes. Photosynthesis: Solar Power for Life is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Photosynthesis: Solar Power for Life?
26 levels across 3 sections, about 52 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Photosynthesis: Solar Power for Life?
No. It's pitched at an intermediate level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Photosynthesis: Solar Power for Life is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Photosynthesis: Solar Power for Life today.
Download Tomo, search Photosynthesis: Solar Power for Life, and play your first lesson in under a minute.