Sry word\ The stidents hiled the syinges with five difterent cancentratians of wothum bydrogencebonate solution, This provides carbon doxide.\ They placed a plece of aquatic plant in each syrines.\ They attached a long tranparent tube to the mozale of exch syringe-\ They pushed the plunger of each syringe in stirtie woy, to force some af the sodium hydrogencarbenate into the tubing\ They ther pulied eash plunger put a lirtle way, to introduce some air into the tubing.\ They marked the position af the menkcias on exch piece of tubing asshown in the diagram.\ All the yringes were then placed in bright sunshine. As the plants phatosynthesised. they released oxygen. The orygen gas collected above the llquid in the syringe, pushing the louid dowa the tube.\ The students recorded the distance mowed by the meniscus in each piece of spparatus after 30 minutes.

Mry boro - The students filled fivesyinges with five different cancentrations of wodium bydrogencerbonate solution, This pravides carbon doxide- - They placed a plece of aquatic plant in each swrines. - They attached along transparent tube to the mozale of each syinge. - They pushed the plunger of each syringe in allittle way, to force some af the sodium hydrogencarbonate into the turtirt? - They ther polied eash planger put a lirtie way, to introduce some air into the tubing. - They marked the position af the meniscis on exch piece of tubing, as-shown in the diagram. All the syringes were then placed in bright sunshine. As the plants phatosynthesised. they released oxygen. The orygen gas collected above the liquid in the syringe, pushing the louid down the tube. The students recorded the distance mowed by the meniscus in each piece of apparatus after 30 minites