Floating leaf disk lab

Question 1

Purpose

Answer 1

of floating leaf disks–> rate of photosynthesis

Question 2

Procedure

Answer 2

1. baking soda and soap in beaker-
2. add hole punched leaf disks in syringe and put solution into syringe
3. place under light

Question 3

1) What was the function of the sodium bicarbonate in this experiment?

Answer 3

carbon source for the leaves

Question 4

3) Explain the process that causes the leaf disks to rise.

Answer 4

The leaf disks rise because when more oxygen is produced the density decreases causing the leaf disks to float at the top.

Question 5

What was the purpose of using water/soap solution for one of the trials?

Answer 5

The purpose of using water/soap for one of the to break through waxy covering

Question 6

What is the effect of darkness on photosynthesis? Explain.

Answer 6

The effect of darkness on photosynthesis is that it will decrease the rate of photosynthesis.

Question 7

If we were to boil the leaf disks, what kind of results would you expect? Explain.

Answer 7

By boiling the leaf disks, I expect that the rate of photosynthesis will slow and eventually stop. This is because there are enzymes present in the light-dependent reaction and increased heat will cause the enzymes to be denatured.

Question 8

How does light intensity affect the rate of photosynthesis?

Answer 8

Light intensity affects the rate of photosynthesis if the light intensity increases then the rate of photosynthesis will also increase.