Exploring Photosynthesis with Floating Leaf Disks

What is the first step in setting up the floating leaf disks lab?

• Loading leaf disks into a syringe

• Gathering spinach leaves

• Sorting leaf disks into groups

• Preparing bicarbonate water solution

How many grams of baking soda are added to the bicarbonate solution?

• 5 grams

• 4 grams

• 3 grams

• 2 grams

What is the purpose of adding detergent to the bicarbonate water solution?

• To increase the water's pH

• To provide nutrients to the disks

• To help the disks sink

• To color the water for visibility

What role does sodium bicarbonate play in the experiment?

• It increases water viscosity

• It serves as a source of carbon dioxide

• It neutralizes acids in the leaf

• It acts as a light source

What is the correct method to remove air from the syringe?

• Shake the syringe vigorously

• Add more leaf disks

• Pull back on the plunger and then push up

• Fill the syringe completely with water

How many leaf disks are used in each experimental setup?

• 20 disks

• 10 disks

• 25 disks

• 15 disks

What environmental conditions are tested in the experiment?

• Cold and warm

• High and low pressure

• Light and dark

• Wet and dry

Why do the leaf disks begin to float during the experiment?

• Absorption of water

• Release of oxygen

• Evaporation of water

• Dissolution of bicarbonate

What is the main purpose of the floating leaf disks lab?

• To observe photosynthesis

• To study plant respiration

• To test leaf durability

• To measure water absorption

After how many minutes were all the leaf disks in the light condition observed to be floating?

• 25 minutes

• 10 minutes

• 20 minutes

• 15 minutes