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Experiment 2
Transpiration: How do different environmental conditions affect plants' rates of transpiration?

Purpose/Hypothesis

All plants transpire. The rate of transpiration depends on a plant's physical properties and its environmental conditions. As transpiration occurs mainly on the leaf, a general rule is that plants with larger leaves will transpire more than plants with smaller leaves.

In this experiment, you will examine the environmental factors that affect a plant's transpiration rate. Using the same type and size plants, you will vary the amount of heat and wind each plant receives. You will place one plant in a warm environment, a second plant in a windy environment, and a third plant in a cool, calm environment.

Before you begin, make an educated guess about the outcome of this experiment based on your...

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1. Introduction
2. Rooting water flow
3. Standing up straight
4. Adapting to dry environments
5. Experiment 1 - Water Flow: How do varying solutions of water affect the amount of water a plant takes in and its turgor pressure?
6. Experiment 2 - Transpiration: How do different environmental conditions affect plants' rates of transpiration?
7. Design Your Own Experiment