Transpiration - Infoplease.com
Transpiration
Infoplease.com
In this process, water evaporates from the surface of a leaf through microscopic pores known as STOMATA. The loss of water creates a suction force that pulls up more water from the roots. Transpiration helps a plant to collect vital minerals from the soil. The amount of water lost from the leaves depends on how much water is in the soil, as well as other environmental conditions, such as temperature, humidity, and wind.
UPWARD-FLOWING WATER
Water in plants is both pushed and pulled upwards inside transport pipes called xylem. This continuous flow of water is known as the transpiration stream and keeps the stem firm so that it can support the weight of the plant. The transpiration stream also transports water to the plant’s leaves for photosynthesis and carries minerals around the plant.
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