LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the amount of added fertilizer
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the rate of transpiration
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the type of fertilizer
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the variety/species of tomato plant
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Detailed explanation-1: -The Experimental Controls/Controlled Variables These are: The type of plants tested. The soil which both plants are growing in. The area where the plants are placed. The amount of time the plants were given to transpire.
Detailed explanation-2: -The rate of transpiration is controlled by the stomatal aperture, and these small pores open especially for photosynthesis. While there are exceptions to this (such as night or CAM photosynthesis), in general, a light supply will encourage open stomata.
Detailed explanation-3: -The rate of transpiration can be calculated by measuring the distance travelled by an air bubble in a capillary tube over a given time. The faster the bubble moves, the greater the rate of water uptake – and so the greater the assumed rate of transpiration.