Year 12 Biology

This week Year 12 Biology students have been investigating the effect of light intensity on the rate of photosynthesis. 

 

They placed tubes containing algae balls at 25cm intervals from the light sources, then measured the pH levels after 20 minutes. As photosynthesis uses carbon dioxide from the solution the algae balls are in the pH will increase as the rate of photosynthesis increases. 

 
 

 

 

Sarah Beattie