Unlocking the Secrets of Photosynthesis!

Dear EISB Community,

I am delighted to share the outcomes of a recent photosynthesis experiment conducted in my Y7/Biology class. The experiment aimed to deepen students understanding of the fundamental question: “Is light a prerequisite for photosynthesis?” The investigation involved a starch test on plant leaves to unveil the intricate relationship between light exposure and photosynthetic activity.

The results of the experiment were both illuminating and conclusive. Leaves exposed to light consistently demonstrated a substantial presence of starch (substance that is produced during photosynthesis), reaffirming the essential role of light in facilitating photosynthesis. Conversely, leaves that were covered with foil (deprived of light) exhibited minimal to no starch, providing a clear indication of the dependence of this vital process on light energy.

This experiment served as an invaluable hands-on experience for students, providing them with a unique opportunity to apply theoretical knowledge in a practical setting. The use of specialized equipment and tools (ethyl alcohol, pipettes, test tubes,  heating plates) to decolorize leaves, collect chlorophyll, and observe how starch reacts with iodine solution elevated the learning experience and allowed students to engage with the scientific method in a meaningful way.

One of the most rewarding aspects of this experiment was students’ genuine curiosity and active involvement! So I want to express my appreciation to them for their enthusiasm, and their dedication. Looking forward for new explorations with them!