A student investigated the effect of plant growth substances (IAA and GA) on the elongation of pea stems, the students marked a 10mm length of stem on each of four plants and applied growth substances to the stem. Figure 2 shows a graph of the student's results. Length of stem section (mm) 161 14- 12- 10- 0 10 20 30 Time (h) a) Describe the effects on growth of the stem for the 2 growth substances applied separately. (4) 40 IAA and GA IAA GA control 50 60

A student investigated the effect of plant growth substances (IAA and GA) on the elongation of pea stems, the students marked a 10mm length of stem on each of four plants and applied growth substances to the stem. Figure 2 shows a graph of the student's results. Length of stem section (mm) 161 14- 12- 10- 0 10 20 30 Time (h) a) Describe the effects on growth of the stem for the 2 growth substances applied separately. (4) 40 IAA and GA IAA GA control 50 60

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter37: Plant Signals And Responses To The Environment

Section: Chapter Questions

Problem 15TYK

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Similar questions

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