The diagram shows the results of an experiment on transpiration using two different leaves. Each leaf was left on a balance in daylight in a closed room and its mass recorded at 1 hour intervals.
Which conclusions could be correct?
1) The loss of mass is mainly due to evaporation of water.
2) Most stomata close in both leaves after 1 hour.
3) Leaf 1 has a larger surface area than leaf 2.
4) Leaf 1 has a thicker cuticle than leaf 2.
1 )
1, 2, 3 and 4
1, 2 and 4 only
3 )
2 and 3 only
4 )
3 and 4 only
