SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When water evaporates out of the leaf’s stomata it is called
A
photosynthesis
B
transpiration
C
transport
D
xylem
Explanation: 

Detailed explanation-1: -Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration. Water also evaporates directly into the atmosphere from soil in the vicinity of the plant.

Detailed explanation-2: -Transpiration is just a subset of the evaporation process.

Detailed explanation-3: -Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.

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