Based on the results of Experiment 3, the greatest proportional growth was observed:

Experiment 3
Ten samples of bacteria were placed in each of 2 Petri dishes. Four different environments were created in each dish—dry/lighted, dry/dark, moist/lighted, and moist/dark. The bottoms of the Petri dishes were each half moist and half dry. The dishes were covered with Petri dish lids. Dish 1 was placed in a darkened area and Dish 2 was placed directly under a 25-watt incandescent lamp, creating a warm, lighted environment. After 2 hours the amount of bacterial growth in each dish was recorded and compared to the amount of growth in a control sample that was placed in a Petri dish and left in a regularly lighted area (Table 3).

F. On the moist side of Dish 1.
G. On the moist side of Dish 2.
H. On the dry side of Dish 1.
J. On the dry side of Dish 2.

Transcribed Image Text:

Dish 1 (in dark) Dish 2 (under lamp) Table 3 Growth proportional to control Moist side Dry side 0.53 0.67 0.99 1.15