(a(i))[3]
Compare the effect of stomatal aperture on the transpiration rate in $T.$ $zebrina$ under the two conditions.
(a(ii))[3]
Explain how stomatal aperture affects transpiration rates in non-moving and moving air.
(b(i))[2]
Explain how the stomatal structures shown in Fig. 2.3 and Fig. 2.4 provide an advantage to plants such as spruce and pine.
(b(ii))[1]
Some plants that grow in very dry habitats shut their stomata during the day and open them at night. State one disadvantage of this strategy for these plants.
(b(iii))[2]
State and explain two leaf adaptations that help plants survive in dry conditions, excluding those that involve stomatal number or stomatal structure.