AIR
TO AIR
SUCTION
PUMP
A
B
D
TWO-HOLE
RUBBER
STOPPER
BENT
GLASS
TUBES
LIMEWATER
TURNS MILKY
KOH SOLUTION
LIMEWATER
GERMINATING SEEDS
(Dissolves any CO present in air)
Fig. 7.4 To show that carbon dioxide is given off from living plant material during respiration.
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