Question

Question

An aquatic plant, Elodea, is sealed in a test tube filled with water. When the test tube is exposed to sunlight, bubbles start to form.






1.) What is the reaction occurring in the test tube above?

2.) What are the bubbles being produced (Substance Y)?

3.) Where is the energy for this reaction coming from?

(3 points)

Answer 1

1.) The reaction occurring in the test tube is photosynthesis. During this process, the plant converts light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.

2.) The bubbles being produced (Substance Y) are oxygen gas (O₂). As a byproduct of photosynthesis, oxygen is released into the water as the Elodea plants carry out this process in the presence of sunlight.

3.) The energy for this reaction is coming from sunlight. The chlorophyll in the aquatic plant captures light energy from the sun, which powers the chemical reactions involved in photosynthesis.