a. extensive roots (to collect water from a wide area/to collect water after rainfall);
b. deep roots to collect water from underground sources;
c. (thick) waxy cuticle to reduce transpiration/water loss/evaporation;
d. water storage tissue/thick stems/thick leaves/succulent (to survive droughts);
e. no leaves/narrow leaves/rolled leaves/spines instead of leaves to reduce the surface area for transpiration/evaporation;
f. fewer stomata/sunken/pitted stomata to reduce transpiration/water loss;
g. vertical stems to reduce exposure to sun at midday/heating when the sun is overhead/hottest OR
pleated stems to allow shrinkage and reswelling/to store water;
h. stomata open at night/CAM metabolism;
Mark first three adaptations
only.
3
Marking guidance: