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Calculating GPP and NPP

This lab explores how light affects photosynthesis by measuring dissolved oxygen in water with Elodea plants under light and dark conditions—demonstrating biochemical reactions and experimental design principles.

Daniel Miller
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Mini Lab: Calculating GPP and NPPNameOpen this Video and answer the questions while watching the video: https://youtu.be/voSQZcqgYNY1.Where and what is the sample of water used in this lab? The sample water is from an algae covered fishtank.2.What is the dissolved oxygen (DO) reading of the water sample?7.4mg/L3.How many bottles are filled?24.Why was the lid of the bottle put on under the water? All the air escapes forthe bottle to only be filled withwater and the elodea plant5.What plant is put in each bottle?The elodea plant6.Describe the treatment to each bottle. (What was done differently to each bottle?) Why?One bottle was covered and in the dark while the other was in the light to measure the differences of itscellular respiration to demonstrate the effect light has on biochemical reactions, such as photosynthesisPause the video and use what you've learned about experimental design t o answer these questions:7.List 4 constants (the things that are the same for each bottle) in this lab:Same amount of water, same plant (Elodea) source, time measured, light source.8.What is the independent variable?bottle covered or in theIight__________________________________9.What is the dependent variable? (What will we measure?)Dissolved oxygenPlay the video to get the results and answer these questions:

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Subject
Biology

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