Photosynthesis Leaf Disk Lab APB Flashcard

Front

What is the role of soap solution in the leaf disk experiment?

Back

To decrease the surface tension of water, allowing gases to penetrate the leaf disks.

Front

What causes leaf disks to float during photosynthesis?

Back

Accumulation of oxygen in the spongy mesophyll.

Front

What happens to the ET50 value if the concentration of sodium bicarbonate is doubled?

Back

ET50 would decrease, as more CO₂ would speed up photosynthesis.

Front

Why is a control group without sodium bicarbonate necessary in the experiment?

Back

To confirm that photosynthesis only occurs in the presence of CO₂.

Front

What are stomata?

Back

Stomata are openings in the leaf that allow gas exchange, necessary for photosynthesis.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the significance of light intensity in photosynthesis?

Back

Light intensity affects the rate of photosynthesis; higher light intensity generally increases the rate up to a certain point.

Front

What is the function of sodium bicarbonate in the leaf disk experiment?

Back

Sodium bicarbonate provides a source of carbon dioxide (CO₂) for photosynthesis.

Front

What is the spongy mesophyll?

Back

The spongy mesophyll is a layer of tissue in the leaf that contains air spaces for gas exchange and is involved in photosynthesis.

Front

How does temperature affect the rate of photosynthesis?

Back

Temperature affects enzyme activity; higher temperatures can increase the rate of photosynthesis up to an optimal point.