Transpiration lap report

Topics: Water, Evaporation, Transpiration Pages: 2 (1278 words) Published: October 22, 2014

Transpiration Introduction:
“Transpiration occurs when the water moves from the soil into plant roots, up through the stem and into the leaves. The water, warmed by the sun, turns into vapor (evaporates), and passes out through thousands of tiny pores (stomata) mostly on the underside of the leaf surface. Leaf transpiration occurs through stomata. Transpiration uses about 90% of the water that enters the plant. The other ten percent is used in photosynthesis and cell growth” (Sunny Datko, 2012). Adhesion and cohesion are the interaction of water molecules with molecules of other substances. Cohesive and adhesive forces are important for the transport of water from the roots to the leaves in plants. “Plants use cohesion and adhesion forces to make a pull on the water column” (Scott Freeman, 2013). This pull results from the tendency of water molecules being evaporated on the surface of the plant to stay connected to water molecules below them, and so they are pulled along. Evaporation is the physical process that can change the water from the liquid state into a gas. This evaporation can occur in a river or in a soil within plant. ”Transpiration is just a subset of the evaporation process, and it’s the water that is inside plants, and then when that evaporates and moves into the atmosphere” (Science learning, 2009). There are a lot of factors that can have an effect on the transpiration in plants such as wind and light. These factors make the rate of the transpiration increase, as the transpiration increases the evaporation will increases as well. We will get a highest rate of the transpiration when we combined the wind and the light. Methods:

-I followed the protocol of the Fundamentals of Life Science lab manual (leady, 2013). There were no changes made in the protocol. I followed the steps without any modification. Results:
We found that the water lost by the plant during the control group was least...
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