NOTE: This lab is to be done under the supervision of an adult since it contains chemicals toxic to human life if ingested (eaten).
Introduction: The process of photosynthesis and respiration are vital to all life on earth. Photosynthesis, carried out by plants and algae provides the foodstuffs upon which most organisms depend for their existence. It is the only process which is able to trap the Sun's energy and convert it to usable food in the form of carbohydrates (glucose). Plants, animals, and humans, must carry out respiration. Carbon dioxide and water are the two end products of respiration. They are also the raw materials for photosynthesis. So both processes depend on each other. In this exercise the water plant Elodea will be used to study both processes.
Purpose: The purpose of this lab exercise is to study the relationship of carbon dioxide to the processes of respiration and photosynthesis.
Watch for results and record your findings.
©Copyright 1998 Elizabeth Beckett, Holly Bernitt, and Vishwa Chandra.