🌱 Part 1: Understanding Photosynthesis

1. What is photosynthesis?

The process plants use to make food using light energy

The process plants use to breathe oxygen

The process plants use to absorb water

The process plants use to grow taller

2. Complete the word equation for photosynthesis:

_____________ + _____________ → _____________ + _____________ (in the presence of light and chlorophyll)

3. Where in the plant cell is chlorophyll found?

Nucleus

Cell wall

Chloroplasts

Vacuole

4. What colour is chlorophyll and why is this important?

🔬 Part 2: Practical Understanding

5. A student placed a leaf under different coloured lights. Which colour of light would be LEAST effective for photosynthesis?

Red light

Blue light

Green light

White light

6. In the elodea practical, what do the bubbles coming from the plant prove?

7. What happens to the energy from light during photosynthesis?

It is lost as heat

It is transferred into chemical energy in glucose

It is stored in water molecules

It is reflected back into the atmosphere

8. Explain why photosynthesis is important for life on Earth.

🎯 Extension Challenge

9. Advanced: A farmer wants to increase the rate of photosynthesis in his greenhouse crops. Suggest THREE factors he could change and explain how each would help.

10. Design Challenge: Draw and label a simple diagram showing the inputs and outputs of photosynthesis. Include arrows to show the direction of materials.