Featured in PASCO’s Biology through Inquiry Teacher Guide
Features 25 inquiry based labs covering the fundamental concepts of cell biology, ecology and physiology.
Germinating Seed Respiration
Use a carbon dioxide gas sensor to understand the comparative rates of CO2 gas production for dry, dormant seeds; for wet, germinating seeds at room temperature; and for wet, cold, germinating seeds.
Guide students to calculate and understand the comparative rates of carbon dioxide (CO2) gas production for dry, dormant seeds; for wet, germinating seeds at room temperature; and for wet, cold, germinating seeds.
Students set up a carbon dioxide gas sensor in a sampling bottle to measure CO2 production for 10 minutes per seed sample and compare results for the following:
- Dry, dormant seeds
- Wet, germinating seeds at room temperature
- Wet, icy cold, germinating seeds
Sensors / Equipment Used:
The PASPORT Carbon Dioxide Gas Sensor measures carbon dioxide concentration CO2 (parts per million) in gases such as air. Ideal for studies of photosynthesis, respiration, fermentation and more.
Sensor extension cable (included with PS-2110)
Sampling bottle (included with PS-2110)
Pea or dry bean seeds (black, navy, white, or pinto)
Ice, cubed or crushed
Your Bundle Options:
A sensor bundle specifically designed to get you started using probeware in your biology lab. Also: perform 10 of the 24 Lab Activities from Biology with Inquiry.
The Biology Standard Sensor Bundle includes a photosynthesis tank and the sensors required to perform 19 of the 24 Lab Activities in the Biology through Inquiry manual.