Teacher manual for Advanced Environmental and Earth Sciences labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.
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.
Sample Lab - Photosynthesis and Primary Productivity (764 KB – PDF)
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:
MultiMeasure sensor that incorporates pH, conductivity, temperature, and the optical dissolved oxygen probe.
A single polycarbonate 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
Your Bundle Options:
Starter Sensor bundle designed for use with Advanced Environmental and Earth Sciences Solutions.
Standard bundle for Advanced Environmental and Earth Sciences Teacher Guide,