Featured in PASCO’s Biology through Inquiry Teacher Guide

Biology through Inquiry Teacher Guide

(PS-2870C)

Features 25 inquiry based labs covering the fundamental concepts of cell biology, ecology and physiology.

Germinating Seed Respiration

Lab Summary

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.

Theory

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.

Method

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:

PASPORT Carbon Dioxide Gas Sensor

(PS-2110)

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.

Materials Used:

Sensor extension cable (included with PS-2110)

Sampling bottle (included with PS-2110)

Beaker, 1000-mL

Pea or dry bean seeds (black, navy, white, or pinto)

Ice, cubed or crushed

Water

Your Bundle Options:

Option 1:

Biology Starter Sensor Bundle

(PS-2920)

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.

Option 2:

Biology Standard Sensor Bundle

(PS-2925A)

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.

Interface Required

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