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Describe how you carried out the investigation into the effect of IAA on plant tissue - Leaving Cert Biology - Question c - 2015
Question c
Describe how you carried out the investigation into the effect of IAA on plant tissue. What were the results of your investigation?
Worked Solution & Example Answer:Describe how you carried out the investigation into the effect of IAA on plant tissue - Leaving Cert Biology - Question c - 2015
Step 1
Describe how you carried out the investigation into the effect of IAA on plant tissue.
Answer
To investigate the effect of Indole-3-acetic acid (IAA) on plant tissue, I followed these steps:
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Sample Selection: I selected plant tissue samples. Some samples were exposed to IAA, while others were not. Alternatively, some samples were treated with varying concentrations of IAA to assess the dosage effect.
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Treatment Application: I applied IAA to the selected samples, ensuring that the control group received no treatment or a placebo solution.
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Incubation Period: The plant tissues were left to incubate for at least two days. This duration allowed adequate time for the effects of IAA to manifest on the plant tissue.
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Measurement: After the incubation period, I measured the growth of the plant tissue. This could be recorded as a change in length, weight, or overall growth across samples. Comparisons between the treated and untreated groups were made to assess the impact of IAA.
Step 2
What were the results of your investigation?
Answer
The results indicated that the concentration of IAA had a significant effect on the growth of the plant tissue. Higher concentrations of IAA correlated with increased growth, illustrating the hormone's role in promoting cell elongation and overall plant growth. In contrast, the control samples that were not exposed to IAA showed less growth, highlighting the hormone's effectiveness. Additionally, variations in tissue growth were noted, depending on the specific concentration of IAA used, supporting the hypothesis that IAA influences developmental processes in plants.