1. Jiro is performing an experiment on photosynthesis using Hydrilla plants. He wants to know which light spectrum would facilitate faster photosynthetic rate. He asked Elea and Nina to help him plan and set-up the experiment. Elea plans to test four light spectra by using four different colored light bulbs accordingly. Nina said they need two controls, one without light source and one under natural light for comparison. They will be using Bromothymol Blue, a color changing carbonic acid indicator as a substrate for the Hydrilla. This indicator, which is originally blue in color, changes to yellow when infused with carbon dioxide and forming carbonic acid. The assumption is that when the Hydrilla plant submerged in the indicator starts to photosynthesize, it will slowly turn the yellow color (previously infused with carbonic acid through blowing carbon dioxide into the solution) back to blue as plants use carbon dioxide during the process. They will check which of the setups will change the yellow indicator back to blue the fastest. They all agreed to do the experiment for a week, with a specific time of exposure each day. As their research assistant, please help them finalize the experiment plan by: illustrating the set-up, and filling in the table below for them Table 2. Experiment plan for testing photosynthetic rates of Hydrilla under differentlightspectra. Treatments Description of the set ups Volume of carbonated solution where plants will be soaked. Duration of treatment per day (time of the day) Set up A Set up B Set up C Set up D Positive Control Negative Control
1. Jiro is performing an experiment on photosynthesis using Hydrilla plants. He wants to know which light spectrum would facilitate faster photosynthetic rate. He asked Elea and Nina to help him plan and set-up the experiment. Elea plans to test four light spectra by using four different colored light bulbs accordingly. Nina said they need two controls, one without light source and one under natural light for comparison. They will be using Bromothymol Blue, a color changing carbonic acid indicator as a substrate for the Hydrilla. This indicator, which is originally blue in color, changes to yellow when infused with carbon dioxide and forming carbonic acid. The assumption is that when the Hydrilla plant submerged in the indicator starts to photosynthesize, it will slowly turn the yellow color (previously infused with carbonic acid through blowing carbon dioxide into the solution) back to blue as plants use carbon dioxide during the process. They will check which of the setups will change the yellow indicator back to blue the fastest. They all agreed to do the experiment for a week, with a specific time of exposure each day. As their research assistant, please help them finalize the experiment plan by:
- illustrating the set-up, and
- filling in the table below for them
- Table 2. Experiment plan for testing photosynthetic rates of Hydrilla under differentlightspectra.
|
Treatments |
Description of the set ups |
Volume of carbonated solution where plants will be soaked. |
Duration of treatment per day (time of the day) |
|
Set up A |
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Set up B |
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Set up C |
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Set up D |
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|
|
|
Positive Control |
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|
Negative Control |
|
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