Experimental Method for Measuring Oxygen Production in Green Plants

 
11. Oxygen from plants
 
Team Nitro
Reviewer: Mihnea Grigore
 
Summary
 
Problem statement: Suggest an experimental method to measure how
much oxygen is produced by a green plant.
 
Summary:
The reporter has proposed an experimental method to measure the
quantity of oxygen produced by a selected aquatic plant and actually
record it.
 
 
 
 
The Report
 
Pros
+
explained profoundly the
photosynthesis  equation
+
talked about both
photosynthesis and respiration
+varied the distance from the light
source
+data presented in graphs
+explained why she chose her
method and the lacks of the other
methods
 
Cons
-did not explain 
why
 she chose 
Ambulia
-did not say from 
where
 the 
carbon dioxide
 was
taken (example: did not say if she used a carbon
dioxide fertilizer) 
for
 the 
photosynthesis
 to
happen
-
Only
 used a 
white light bulb
, did not explain
the influence of different wavelengths on the
production of oxygen (ex: UV light)
-Did 
not explain
 
why
 the 
oxygen generation
tops
 out at a certain point
-Did 
not
 talk about the 
composition of the
water
 (minerals and CO2 concentration)
-Did 
not
 have 
hypotheses
-did 
not measure
 the 
oxygen quantity
 in grams
or number of moles;
-used 
volume as unit of measure
, which
depends on the 
pressure
 and 
temperature
 of
the environment;
-did not take the oxygen bubbles on the beaker
walls  into consideration;
 
The Opposition
 
Pros
+
highlighted that the colour of
the light (different
wavelengths) were’t tested
+observed that the theory was
consistent
+highlighted the lack of proof of
the experiment (the sensors
used) and the lack of
environmental parameters
+brought into the discussion
several parameters that were
not studied in the reporter paper
 
Cons
-did not ask from where the carbon
dioxide was taken and if the
reporter used any fertilizer
-did not ask/take into consideration
that some bubbles of oxygen stuck
to the beaker’s sides
-time management was poor
-did not observe that the quantity
of oxygen was not exprimated in
mass or number of moles;
 
The discussed topics
 
Opponent question
1)Did you take the environmental parameters
into consideration?
2)Where did you conduct the experiments?
3)Do you think the color of the light matters?
4)What was the temperature of the room?
5) Did the light bulb heat up ? (the question of
the opponent is a little irrelevant, since the bulb
is placed away from the beaker and it does not
influence thermally)
6) Why did you use an aquatic plant?
7) Why did you use the same plant for all the
experiments
8) What do you think would've happened if you
used green light?
 
Reporter answer
1)Yes.
2)In her apartment.
3)yes (we agree with the reporter, although
the reporter did not study this aspect in the
paper)
4)23 degrees Celsius
5)No because the bulb was LED
6) It was easier to perform the experiment
using an aquatic plant
7)Because it would give more consistent
results.
 8)White lights contains the whole
spectrum of colors (it is a correct
statement, but it does not answer the
question)
Slide Note
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The reporter proposed an experimental method to measure oxygen production by an aquatic plant, highlighting the process and outcomes. While there were detailed explanations on photosynthesis, the report lacked essential elements such as explaining the choice of plant and the source of carbon dioxide, as well as not considering different light wavelengths' effects. The opposition noted inconsistencies in the experiment's proof, lacking environmental parameters, and highlighted unexplored parameters. Despite varied distances from the light source and data presentation in graphs, some fundamental aspects were overlooked, like quantifying oxygen in mass or moles.


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  1. 11. Oxygen from plants Team Nitro Reviewer: Mihnea Grigore

  2. Summary Problem statement: Suggest an experimental method to measure how much oxygen is produced by a green plant. Summary: The reporter has proposed an experimental method to measure the quantity of oxygen produced by a selected aquatic plant and actually record it.

  3. The Report Cons -did not explain why she chose Ambulia -did not say from where the carbon dioxide was taken (example: did not say if she used a carbon dioxide fertilizer) for the photosynthesis to happen -Only used a white light bulb, did not explain the influence of different wavelengths on the production of oxygen (ex: UV light) -Did not explain why the oxygen generation tops out at a certain point -Did not talk about the composition of the water (minerals and CO2 concentration) -Did not have hypotheses -did not measure the oxygen quantity in grams or number of moles; -used volume as unit of measure, which depends on the pressure and temperature of the environment; -did not take the oxygen bubbles on the beaker walls into consideration; Pros + explained profoundly the photosynthesis equation + talked about both photosynthesis and respiration +varied the distance from the light source +data presented in graphs +explained why she chose her method and the lacks of the other methods

  4. The Opposition Pros + highlighted that the colour of the light (different wavelengths) were t tested +observed that the theory was consistent +highlighted the lack of proof of the experiment (the sensors used) and the lack of environmental parameters +brought into the discussion several parameters that were not studied in the reporter paper Cons -did not ask from where the carbon dioxide was taken and if the reporter used any fertilizer -did not ask/take into consideration that some bubbles of oxygen stuck to the beaker s sides -time management was poor -did not observe that the quantity of oxygen was not exprimated in mass or number of moles;

  5. The discussed topics Reporter answer 1)Yes. 2)In her apartment. 3)yes (we agree with the reporter, although the reporter did not study this aspect in the paper) 4)23 degrees Celsius 5)No because the bulb was LED 6) It was easier to perform the experiment using an aquatic plant 7)Because it would give more consistent results. 8)White lights contains the whole spectrum of colors (it is a correct statement, but it does not answer the question) Opponent question 1)Did you take the environmental parameters into consideration? 2)Where did you conduct the experiments? 3)Do you think the color of the light matters? 4)What was the temperature of the room? 5) Did the light bulb heat up ? (the question of the opponent is a little irrelevant, since the bulb is placed away from the beaker and it does not influence thermally) 6) Why did you use an aquatic plant? 7) Why did you use the same plant for all the experiments 8) What do you think would've happened if you used green light?

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