The AP Biology Exam - Biology with Mrs. Clelland.
Adapted from a lab by Lisa Ellis (Partially adapted from the College Board AP Biology Student Lab Manual, 2001 edition, and from a lab written by Frank Bell). 1 Name: Transpiration Inquiry Problem: Design an experiment to quantify the effect of Humidity, Temperature, Wind, or Light Intensity, on the rate of transpiration in a small plant.
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The Advanced Placement Program enables willing and academically prepared students to pursue college-level studies - with the opportunity to earn college credit, advanced placement, or both - while still in high school. AP Biology uses scientific inquiry for investigation throughout the course.
Ap Biology Lab 9: Transpiration Essay; Ap Biology Lab 9: Transpiration Essay. 657 Words 3 Pages. Adriana Gutierrez AP Biology Lab 9 Analysis 1. For this experiment, what were the independent variable and the dependent variable? What were the constants? The independent variable of this experiment are the environmental factors that you are.
The transport of water through xylem in plants includes the upward movement of water. The forces of transpirational pull and root pressure are responsible for counteracting gravity and producing water’s upward movement. Transpirational pull is defined as the surface tension caused by water evaporation that pulls water upward through xylem.
According to the cohesion-tension hypothesis, transpiration provides the pull for the ascent of xylem sap, and the cohesion of water molecules transmits this pull along the entire length of the xylem from shoots to roots. Hence, xylem sap is normally under negative pressure or tension.
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