Give 4 extensions to the light intensity practical.

1)Collect gas in syringe. 2)Use data logging equipment to mesure oxygen concetration. 3)Use acecate filters to mesure effects of different wavelengths. 4)Use veriegated plants - Drop veriegated leaf in boiling water to kill and preserve it. - Leave in hot ethanol for 10 minutes to remove chlorophyll. - Dip in boiling water to soften then spread in petri dish and cover with iodine. - Areas that had chlorophyl > blue/black, areas without remain pale.