Biology lesson

Photosynthesis: how plants store light energy in sugar.

Photosynthesis happens in chloroplasts. Plants take in carbon dioxide and water, use light energy, and produce glucose and oxygen.

Classroom CER

Claim: Plants produce oxygen as a product of photosynthesis.
Evidence: In class investigations, bubbles or gas sensors increase when a plant is in light, and the increase slows in the dark.
Reasoning: Light energy captured by chlorophyll drives the reactions that rearrange carbon dioxide and water into sugar and oxygen.