queenari566 queenari566

23-12-2022
Biology

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a student placed 20 tobacco seeds of the same species on moist paper towels in each of two petri dishes. dish a was wrapped completely in an opaque cover to exclude all light. dish b was not wrapped. the dishes were placed equidistant from a light source set to a cycle of 14 hours of light and 10 hours of dark. all other conditions were the same for both dishes. the dishes were examined after 7 days, and the opaque cover was permanently removed from dish a. both dishes were returned to the light and examined again at 14 days. the following data were obtained.

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