its some kind of process in plants that is a necessary evil i think botanists can answer it
2007-01-29 18:59:54 · 6 answers · asked by ilyas g 1 in Science & Mathematics ➔ Botany
Transpiration has often been called as a ‘necessary evil’, ‘necessary’ be-cause it ‘cools’ the leaf below air temperature and ‘evil’ be-cause it accelerates the rate of loss of soil water; which isoften limiting particularly in the semi-arid tropics
2007-01-29 19:09:39 · answer #1 · answered by SHARON A 2 · 0⤊ 0⤋
transpiration is often termed as a necessary evil because it causes the movement of ascent of sap in plants but during hot sunny days when the rate of transpiration is high wilting occurs in plants.
2007-01-30 05:57:03 · answer #2 · answered by divas 3 · 0⤊ 0⤋
Transpiration?
Plants lose water during transpiration, but it's going to happen when the stomata are open. And it helps move more water up through the xylem.
2007-01-30 03:05:31 · answer #3 · answered by ecolink 7 · 0⤊ 0⤋
Transpiration . as it is both advantageous and diadvantageous for the plant.
advantages:
-provides cooling effect
-leads to development of suctin pressure for transpirational pull for transport of water
-removes excess water
disadvantages:
-leads to wilting of plants
-90% of water is wasted
2007-01-30 07:58:16 · answer #4 · answered by xyz123 1 · 0⤊ 0⤋
it's called transpiration
the removal of water molecules out of the stomata to create an pressure difference so more and fresh water move into the cells
durin water shortage the gaurd cells in stomata closes and the "evil" stops
2007-01-30 05:38:34 · answer #5 · answered by RAKSHITH M 2 · 0⤊ 0⤋
It's transpiration.
2007-01-30 03:28:03 · answer #6 · answered by arun m 2 · 0⤊ 0⤋