WhyloWhylo

Growing things · Ages 3–9

How does a seed grow?

A seed holds a young plant and stored food. With suitable water, oxygen, and temperature, it can germinate: a root emerges, followed by a shoot. Later, leaves use light to make food.

Read or listen to the story

For little wonderers, ages 3–5

A tiny plant is waiting inside the seed. When the conditions are right, it grows a root and a shoot. Roots take in water; leaves help the plant make food.

A little deeper, ages 6–9

Water starts changes inside the seed, allowing the embryo to use stored food. The first root anchors it and takes up water. The shoot grows toward light. Different seeds need different conditions, including different amounts of light, to germinate.

A Whylo Sample Story

Pip's first little root

NoraplantedabeanseedinapotandnameditPip.Shemadeasignwithlargepurpleletters.Shewateredthesoilgently.Thenshepulledupachair.‘I'mready,’shetoldthepot.Nothinghappened.

Thenextmorning,nothingseemedtohavehappenedeither.Norafetchedhertoytrumpet.‘Maybeitneedsawake-upsong.’Dadsmiled.‘Theremayalreadybegrowingwecan'tsee.Theseedhasayoungplantinside,withfoodtohelpitbegin.’Noraputthetrumpetdown.Pipcouldhaveaquietmorning.

Theykeptthesoildamp,notflooded,andleftthepotinasuitablewarmplace.Underthesurface,theseedtookinwater.Arootbegantopushout.Noracouldn'tseeityet,butshedrewapossiblerootinhergardennotebook.‘Thispartismyguess,’shesaid,labelingthepicture.

Onemorningacurvedgreenshootbrokethroughthesoil.Noranearlyspilledhercereal.‘Pip!’Shebroughtthenotebookoveranddrewwhatshecouldreallysee.Intime,leavesopenedtothelight.Thelittleplantwasbeginningtomakeitsownfood.

Noraaddedafinallinebeneaththepurplesign:‘Growinghappenshere,evenwhenitlooksquiet.’Sheleftthetrumpetinthetoybox.Instead,shebroughtPipacarefullittledrink.

Nora and Dad admire a new green bean shoot in a pot on a sunny windowsill.
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Read the full story

Nora planted a bean seed in a pot and named it Pip. She made a sign with large purple letters. She watered the soil gently. Then she pulled up a chair. ‘I'm ready,’ she told the pot. Nothing happened.

The next morning, nothing seemed to have happened either. Nora fetched her toy trumpet. ‘Maybe it needs a wake-up song.’ Dad smiled. ‘There may already be growing we can't see. The seed has a young plant inside, with food to help it begin.’ Nora put the trumpet down. Pip could have a quiet morning.

They kept the soil damp, not flooded, and left the pot in a suitable warm place. Under the surface, the seed took in water. A root began to push out. Nora couldn't see it yet, but she drew a possible root in her garden notebook. ‘This part is my guess,’ she said, labeling the picture.

One morning a curved green shoot broke through the soil. Nora nearly spilled her cereal. ‘Pip!’ She brought the notebook over and drew what she could really see. In time, leaves opened to the light. The little plant was beginning to make its own food.

Nora added a final line beneath the purple sign: ‘Growing happens here, even when it looks quiet.’ She left the trumpet in the toy box. Instead, she brought Pip a careful little drink.

What we learned

A seed uses stored food to begin growing. Its roots and leaves help it keep growing into a plant.

One more little discovery

With a grown-up, plant a bean seed following its packet directions. Keep a drawing diary of what you see each day. Keep seeds out of mouths and wash hands after handling soil.

Talk about it together

Why might a seed be changing even before you can see a shoot?

Our characters and adventures are fictional. Explore the science behind this question:

Penn State Extension: Seed and Seedling Biology

Keep wondering

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