Do Plants Really Produce Oxygen?

The video tutorial explains an experiment to demonstrate how plants produce oxygen. It begins with an introduction to the oxygen cycle and lists the materials needed for the experiment. The setup involves using a sprig of Elodia in a test tube filled with water, placed in front of a lamp. The experiment measures the number of oxygen bubbles produced at different distances from the light source. The tutorial concludes with instructions on analyzing the data and understanding the effect of light distance on oxygen production.

What is the primary purpose of the experiment discussed in the video?

• To determine the water absorption rate of plants

• To test the effect of light on plant color

• To measure the growth rate of plants

• To confirm that plants produce oxygen

Which of the following is NOT a material needed for the experiment?

• A sprig of Alodia

• A thermometer

• A 40 Watt bulb

• A 1000 milliliter beaker

What is the first step in setting up the experiment?

• Place the test tube in front of the lamp

• Crush the end of the Alodia stem

• Fill the beaker with distilled water

• Trim the sprig of Alodia

How should the test tube be positioned in the beaker?

• At an angle with the opening facing the lamp

• Vertically with the opening above water

• Upside down with the opening submerged

• Horizontally with the opening facing up

What is the purpose of moving the jar to different distances from the lamp?

• To observe the color change in the Alodia

• To measure the temperature change in the water

• To test the effect of light intensity on oxygen production

• To ensure even distribution of light