Question

question 1 - 2
a student conducted an investigation to determine the effect of various environmental conditions on the rate of water loss in plants. the student prepared four groups of plants (1, 2, 3, and 4). each group was exposed to different environmental conditions. the water loss of each plant was measured over time in 10 - minute intervals for a total of 30 minutes. the experimental results appear in the data table below.
water loss observed in ounces
group environmental conditions 0 minutes 10 minutes 20 minutes 30 minutes
1 normal classroom conditions 0 2.2 4.6 8.6
2 normal classroom conditions + a floodlight 0 4.2 7.6 11.7
3 normal classroom conditions + a fan 0 4.5 7.8 11.0
4 normal classroom conditions + heat lamp 0 1.3 2.4 3.7
if the trends observed in the experiment continue, which of the following environmental conditions would have the greatest impact on water loss of the plants?

1. classroom conditions
2. classroom conditions and fan
3. classroom conditions and floodlight
4. classroom conditions and heat lamp

Explanation:

Step1: Analyze water - loss data

Compare the water - loss values at 30 minutes for each group.
Group 1 (normal classroom conditions): 8.6 ounces
Group 2 (normal + floodlight): 11.7 ounces
Group 3 (normal + fan): 11.0 ounces
Group 4 (normal + heat lamp): 3.7 ounces

Step2: Determine the greatest water - loss

The highest water - loss value at 30 minutes is 11.7 ounces for Group 2 (normal classroom conditions + a floodlight).

Answer:

Normal classroom conditions and floodlight