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Table 1 Temperature (in °C) 10 15 Rate of water uptake (in mm³) averaged over ten minutes 20 25 0.4 1.0 2.1 30 35 3.2 4.0 4.4 40 a) Plot the data from Table 1 in a suitable form. b) Explain how the temperature affects the rate of water uptake by the shoot based on your plot. Explain what would happen to the leaves if they were left for a longer time at 40°C? c)

Table 1 Temperature (in °C) 10 15 Rate of water uptake (in mm³) averaged over ten minutes 20 25 0.4 1.0 2.1 30 35 3.2 4.0 4.4 40 a) Plot the data from Table 1 in a suitable form. b) Explain how the temperature affects the rate of water uptake by the shoot based on your plot. Explain what would happen to the leaves if they were left for a longer time at 40°C? c)

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Table 1 Temperature (in °C) Rate of water uptake (in mm³) averaged over ten minutes 10 0. 15 0.4 20 1.0 25 2.1 30 3.2 35 4.0 40 4.4 a) Plot the data from Table 1 in a suitable form. b) Explain how the temperature affects the rate of water uptake by the shoot based on your plot. Explain what would happen to the leaves if they were left for a longer time at 40°C? c)
Transcribed Image Text:Table 1 Temperature (in °C) Rate of water uptake (in mm³) averaged over ten minutes 10 0. 15 0.4 20 1.0 25 2.1 30 3.2 35 4.0 40 4.4 a) Plot the data from Table 1 in a suitable form. b) Explain how the temperature affects the rate of water uptake by the shoot based on your plot. Explain what would happen to the leaves if they were left for a longer time at 40°C? c)
Figure 6 below shows a simple potometer, which is a piece of apparatus that can be used to measure water uptake (transpiration) by a leafy shoot. Figure 6 Leafy shoot Capillary tube with a scale Rubber bung Water level Tubing filled with water -Clamp stand Students carried out an investigation using a potometer, similar to the one shown in Figure 6. They used this apparatus to measure the volume of water uptake by a shoot at different temperatures over a ten minute period. Students first measured the water absorbed by a shoot by observing the movement of the water in the capillary tube at 25°C. The level of water in the capillary tube decreased as water was absorbed by the shoot. After ten minutes students wrote down the level of water in the capillary tube. The experiment was repeated over a range of different temperatures, and the level of water in the capillary tube was noted at each temperature. Several replicates were carried out and the average rate of water uptake was calculated. All other environmental factors were kept as constant as possible. The results are shown in Table 1 on the following page. 1
Transcribed Image Text:Figure 6 below shows a simple potometer, which is a piece of apparatus that can be used to measure water uptake (transpiration) by a leafy shoot. Figure 6 Leafy shoot Capillary tube with a scale Rubber bung Water level Tubing filled with water -Clamp stand Students carried out an investigation using a potometer, similar to the one shown in Figure 6. They used this apparatus to measure the volume of water uptake by a shoot at different temperatures over a ten minute period. Students first measured the water absorbed by a shoot by observing the movement of the water in the capillary tube at 25°C. The level of water in the capillary tube decreased as water was absorbed by the shoot. After ten minutes students wrote down the level of water in the capillary tube. The experiment was repeated over a range of different temperatures, and the level of water in the capillary tube was noted at each temperature. Several replicates were carried out and the average rate of water uptake was calculated. All other environmental factors were kept as constant as possible. The results are shown in Table 1 on the following page. 1
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