Featured in PASCO’s College Biology Instructor Guide

College Biology Instructor Guide

(PS-3800A)

College Instructor edition with 26 experiments covering introductory and general biology topics.

Photosynthetic Activity

Lab Summary

Use a water quality sensor to measure the effects of light on the dissolved oxygen production by an aquatic plant in a PASCO Photosynthesis Tank.

Theory

Students explore factors that limit oxygen and carbohydrate production during photosynthesis.

  • Students quantify the reactions of photosynthesis.

Method

Students gain experience conducting the following procedures:

  • Measuring photosynthetic activity using the dissolved oxygen sensor and photosynthesis tank.
  • Manipulating the amount of light in the system to determine the effects on the rate of dissolved oxygen production.

Sensors / Equipment Used:

PASPORT Water Quality Sensor

(PS-2169)

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.

Photosynthesis Tank

(PS-2521B)

Designed to improve and give more flexibility to measuring dissolved oxygen during photosynthesis.

Materials Used:

Beaker, 250-mL 
Dark cloth to cover tank 
Desk lamp 
Distilled water - 1 L
Elodea, or other aquatic plant - 2 to 3 sprigs
Florescent or incandescent light bulb 
Magnetic Stirrer with Magnetic Stir Bar

The Associated Bundle:

College Biology Bundle

(PS-2926B)

A complete probeware bundle designed for PASCO's College Biology curriculum

Interface Required

This experiment may require software and an interface for data collection.