From Seed to Sunlight: teacher key

How Plants Grow, grade 3 edition, written for 3rd grade. A seed has a baby plant inside. Learn how it wakes up, makes its own food, and sends its seeds out into the world.

Read the book. Print this page for the key.

Questions and answers

1. What do plants use to make their own food?
   • Sunlight, water and carbon dioxide (answer)
   • Soil, rocks and wind
   • Pollen, fur and sand
2. What comes out of the seed coat first?
   • The leaves
   • The root (answer)
   • The stem
3. What gas does photosynthesis give off?
   • Steam
   • Smoke
   • Oxygen (answer)
4. Why does a stem hold the leaves up?
   • So they can reach the sunlight (answer)
   • So they can drink the soil
   • So bees cannot land
5. How big is a giant sequoia seed?
   • A coconut
   • A watermelon
   • A grain of oatmeal (answer)

Words

• photosynthesis: food from light
• pollen: flower dust
• stem: plant's stalk
• oxygen: gas we breathe