Featured in PASCO’s College Environmental Science Instructor Guide
College Instructor edition with experiments covering introductory and general environmental science topics.
Photosynthesis & Productivity
Use a dissolved oxygen sensor to determine the primary productivity of an aquatic plant.
Students determine the primary productivity of an aquatic plant.
Students will gain experience conducting the following procedures:
- Use a dissolved oxygen sensor to measure the rate of change in dissolved oxygen concentrations in a closed chamber while exposing an Elodea plant to bright light and in darkness.
- Calculate the net primary productivity (NPP) rate, cellular respiration (R) rate, and gross primary productivity (GPP) rate.
- Estimate the total GPP, R, and NPP of the Elodea plant if maintained in the experimental condition for 24 hours.
Sensors / Equipment Used:
Measures temperature, conductivity, pH/ISE/ORP and dissolved oxygen. It is specifically designed for convenience in conducting water quality lab experiments. For use with PASPORT Interfaces.
A single acrylic chamber designed to integrate sensors for controlled-environment experiments such as fermentation and plant or cricket respiration.
Black cloth, opaque, 50 cm x 50 cm
Dechlorinated tap water - 1 L
Elodea sp. plant - Several
Lamp, 100 W or high-intensity
Magnetic stirrer and stir bar
Alternative to the photosynthesis tank:
Erlenmeyer flask, 250-mL
Large base and support rod
Shallow pan or dish, large
The Associated Bundle:
Contains the probeware needed to perform all 26 experiments in the College Environmental Science instructor guide.