Plant Power Worksheet
Life Science • Photosynthesis
Plant Power: Green Food Makers
Discover how green plants turn sunlight, water, and air into energy and oxygen.
Name:
Date:
Part 1: Key Terms Word Bank
Use each word once
Producer Chlorophyll Glucose Oxygen Sunlight Carbon Dioxide
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A living thing that creates its own food rather than hunting is called a .
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The green helper inside leaf cells that traps warm light energy is .
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The sweet plant sugar that provides fuel for new stems and roots is .
Part 2: The Green Kitchen Recipe
What Goes In & What Comes Out
What Goes In
1 Light: Warm energy from the Sun
2 Water: Absorbed by roots in dirt
3 Air: Carbon dioxide through stomata
Leaf Kitchen Bakes sweet fuel!
What Comes Out
A Sweet Sugar: Glucose food for plant
B Fresh Oxygen: Clean air for animals
Complete the recipe formula:
Water + + Sunlight → (sweet food) + (fresh air)
Part 3: Concept Checkup
Fill in the bubble next to the best answer
1. Where does almost all living energy on Earth start?
A. Deep ocean water
B. The bright Sun
C. The dark Moon
2. Why do green leaves look green to human eyes?
A. Chlorophyll reflects green light back
B. Dirt colors the stem green
C. Rainwater turns leaves green
3. What is the fresh gas gift that plants release into the air for humans and animals to breathe?
A. Carbon dioxide
B. Oxygen gas
C. Helium gas
Unit: Ecosystem Producers & Energy Flow Page 1 of 2 • Continue on next page →
Plant Power: In the Field & Ecosystem
Sequencing steps, investigating local producers, and connecting food chains.
Page 2 of 2
Part 4: Steps in the Green Kitchen
Write numbers 1, 2, 3, 4 in order
The leaf mixes air and water using sun energy to bake sweet sugar (glucose).
Roots drink water from soil, and green leaves take in carbon dioxide air.
Fresh oxygen gas floats out into the sky for people and animals to breathe.
Green chlorophyll inside leaf cells catches warm rays of sunlight.
Part 5: Local Producer Detective
Observe producers around your school or yard
1. Tall Tree (e.g. Oak)
Where does the sun hit its leaves?
What animal might eat its parts?
2. Wild Lawn Grass
Where does water enter this plant?
What animal might eat its parts?
3. Dandelion / Weed
Describe its leaf shape or color:
What animal might eat its parts?
Part 6: Why All Animals Need Green Plants
1. Sun
2. Plant (Producer)
3. Rabbit (Consumer)
4. Fox (Consumer)
Think Deeply: What would happen to rabbits, foxes, and people if all green plants stopped making food? State two big reasons:
Reason 1:
Reason 2:
Producers and Making Food • Science Handout ☆ Great work exploring plant biology!
Plant Power Answer Key
Teacher Answer Key & Guide
Plant Power: Green Food Makers
Master key and instructional notes for Page 1 of the student worksheet.
Target Grades: 2nd–4th
Focus: Photosynthesis basics, energy source, and terminology.
Part 1: Key Terms Word Bank [Answer Key]
3 Points
Producer Chlorophyll Glucose Oxygen Sunlight Carbon Dioxide
-
A living thing that creates its own food rather than hunting is called a Producer.
-
The green helper inside leaf cells that traps warm light energy is Chlorophyll.
-
The sweet plant sugar that provides fuel for new stems and roots is Glucose.
Part 2: The Green Kitchen Recipe [Answer Key]
4 Points
Inputs (What Goes In)
✓ Light: Warm solar energy
✓ Water: Absorbed by soil roots
✓ Air: Carbon dioxide through stomata
Leaf Kitchen Bakes sweet fuel!
Outputs (What Comes Out)
✓ Glucose: Sweet sugar fuel
✓ Oxygen: Clean gas for animals
Completed Formula:
Water + Carbon Dioxide + Sunlight → Glucose (sweet food) + Oxygen (fresh air)
Part 3: Concept Checkup [Answer Key]
3 Points
1. Where does almost all living energy on Earth start?
A. Deep ocean water
✓ B. The bright Sun
C. The dark Moon
• Teaching note: The sun provides the initial radiant energy driving all photosynthetic producers.
2. Why do green leaves look green to human eyes?
✓ A. Chlorophyll reflects green light back
B. Dirt colors the stem green
C. Rainwater turns leaves green
• Teaching note: Chlorophyll absorbs red and blue wavelengths, bouncing back green to our eyes.
3. What is the fresh gas gift that plants release into the air for humans and animals to breathe?
A. Carbon dioxide
✓ B. Oxygen gas
C. Helium gas
• Fun fact: One mature leafy tree produces enough oxygen in a year for four people to breathe.
Teacher Resource • Answer Key Page 1 of 2 • Continue on next page →
Plant Power: Teacher Key & Rubric (Page 2)
Step order sequence, field observations, and open-response scoring guidance.
Page 2 Key
