He chose garden peas for his experiment. He grew a dwarf type of garden pea and sprayed half of his plants with gibberellin every day for three weeks after germination. The other half of the plants were not sprayed. At the end of his experiment, he measured the height of all of the plants. He found that the dwarf plants that were sprayed with gibberellin were much taller than the unsprayed plants. He concluded that gibberellin increases the growth rate of pea plants.
a. How could you modify Adrian's conclusion to make it better reflect the results he obtained?
b. How could Adrian have designed his experiment differently to make it a better experiment?
Adrian decided to conduct an experiment on the affects of gibberellins on plant growth for a science project?
a) External gibberelin application allows dwarf pea plants to grow taller.
b) Include more groups with differing doses or application frequencies of gibberelin.
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