Question

1. a student designs an experiment to look at the effects of natural temperature change on photosynthesis of water plants. the student places a water plant in a test tube with water and puts a multiprobe into the water. the student places the beaker under an adjustable heat lamp to control the temperature of the experiment. the multiprobe is designed to take various readings during the experiment. after 5 days, the student analyzes the data. examine the data table and identify which conclusion is suppported by the data? (1 point) measurements day 0 day 1 day 2 day 3 day 4 day 5 average temperature (°c) 25 22 23 28 32 35 sugar concentration (mg/l) 4.3 4.5 4.4 4.4 4.5 4.3 oxygen concentration (mg/l) 6.5 6.6 6.5 6.9 7.5 7.8 nitrogen concentration (mg/l) 0.25 0.25 0.25 0.25 0.25 0.25 phosphorus concentration (mg/l) 0.01 0.01 0.01 0.01 0.01 0.01 when the water temperature is above 30°c, the plant has the highest rate of photosynthesis based on the increasing concentration of oxygen. photosynthesis for the piant is negatively impcted by high temperatures because the amount of nitrogen present in the water does not change. on days where the water temperature is below 25°c, the change in the concentration of sugar in the water indicates that the plant has the lowest rate of photosynthesis. as the temperature increases, the rate of photosynthesis in the plant due to the presence of phosphorus in the water.

Explanation:

Photosynthesis produces oxygen. As the temperature increases above 30°C (Day 4 and 5), the oxygen concentration increases significantly, indicating a higher rate of photosynthesis. Nitrogen and phosphorus concentrations remain constant, so they do not support the other statements about their impact on photosynthesis. Sugar concentration has minimal change and is not a clear indicator of photosynthesis rate in this context.

Answer:

When the water temperature is above 30°C, the plant has the highest rate of photosynthesis based on the increasing concentration of oxygen.