no, im not trying to say it, im trying to teach you something.
"microscopic hairs called trichomes that help it stand up to brutally dry
conditions.
Each tiny hair casts a
microscopic shadow to protect the leaf's outer layer from direct solar exposure."
transpiration is what helps protect plants from dry conditions not by hairs you call trichomes-
Transpiration is a process similar to
evaporation. It is a part of the water cycle, and it is the loss of
water vapor from parts of
plants (similar to
sweating), especially in
leaves but also in
stems,
flowers and
roots. Leaf surfaces are dotted with openings which are collectively called
stomata, and in most plants they are more numerous on the undersides of the foliage. The stoma are bordered by guard cells (together known as stomatal complex) that open and close the pore.[SUP]
[1][/SUP] Leaf transpiration occurs through stomata, and can be thought of as a necessary "cost" associated with the opening of the stomata to allow the diffusion of
carbon dioxide gas from the air for
photosynthesis. Transpiration also cools plants, changes
osmotic pressure of cells, and enables
mass flow of
mineral nutrients and water from roots to
shoots.
Plants regulate the rate of transpiration by the degree of stomatal opening. The rate of transpiration is also influenced by the evaporative demand of the atmosphere surrounding the leaf such as
humidity,
temperature, wind and incident sunlight.
Soil water supply and soil temperature can influence stomatal opening, and thus transpiration rate. The amount of water lost by a plant also depends on its size and the amount of water absorbed at the roots. Stomatic transpiration accounts for most of the water loss by a plant, but some direct evaporation also takes place through the cuticle of the leaves and young stems. Transpiration serves to evaporatively cool plants as the escaping water vapor carries away heat energy.