The following experiment was performed to test the effect of auxin on plant growth: Study and answer question.
The auxin was dissolved in a gelatin block; gelatin does not affect the biological activity of the auxin. Several plant seedlings were prepared in a gelatin block; gelatin does not affect the biological, activity of the auxin. Several plant seedlings were prepared as described above and growth was measured every 5 days.
Based on the results of the experiment, one can conclude that the tip of the plant contains ....................
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