Water absorbed at night, stomata close Permanent wilting cannot recover. Drought soil doesn't have enough water. Negligible transpiration, but lots of soil water. At night, water moves into roots by osmosis. Dew drops in AM could be from guttation.
Fall leaves drop off to reduce loss of water from plant in dry, cold winter air.
Plant dormant until spring. Chlorophyll breaks down, so other pigments visible. Stem side of abscission zone gets cork cells to seal stem after leaf falls. Wind breaks connections of few xylem cells and leaves fall. Leaves attract, capture, digest prey Passive trap in pitcher plant.