ap bio transpiration pre lab

ap bio transpiration pre lab - Chris Dayal February 7, 2011...

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Chris Dayal February 7, 2011 Period 2/3 AP BIO Transpiration Pre-Lab 1. What is a “potometer”? It is sometimes known as a transpirometer and is a device used for measuring the rate of water uptake of a leafy shoot . 2. Diagram and label a potometer.
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3. Why and how will you measure the area of the leaves used? We will measure the area of the leaves by arranging the plants leaves on a grid and by tracing the edge pattern of the leaves. Using the leaf outlines, we will then count all of the blocks that are completely within tracing and estimate the number of blocks that lie within the tracing and then calculate the surface area corresponding to grid size and by performing the necessary calculations to obtain the total. The surface area has to be calculated because this greatly affects the amount of water lost through transpiration. Smaller leaves may lose less water than the larger ones, but by calculated water loss by surface area creates comparable data that is constant and consistent. 4. Which conditions will transpiration occur quicker than the control and why?
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This note was uploaded on 02/15/2011 for the course BIO 512 taught by Professor Brown during the Spring '11 term at BU.

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ap bio transpiration pre lab - Chris Dayal February 7, 2011...

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