Rates Of Photosynthesis

Question 1

Aim?

Answer 1

To investigate the range of concentrations of salt or sugar solutions on the mass of plant tissue

Question 2

Step one

Answer 2

Use a cork borer to cut five potato cylinders of the same diameter.

Question 3

Step two

Answer 3

Use the knife to trim off any potato skin on each potato cylinder. Then trim each potato cylinder so they are all the same length

Question 4

Step three

Answer 4

Accurately measure the mass(g) of each potato cylinder

Question 5

Step four

Answer 5

Accurately measure the length of each potato cylinder

Question 6

Step 5

Answer 6

Record your measurements in a table

Question 7

Step 6

Answer 7

Measure 10 cm3 of each concentration of sugar or salt solution and put into boiling tubes.
Label each boiling tube clearly.

Question 8

Step 7

Answer 8

Measure 10 cm3 of distilled water and put into the fifth boiling tube. Label the boiling tube
clearly with the correct sucrose concentration.

Question 9

Step 8

Answer 9

Add one potato cylinder into each boiling tube

Question 10

Step 9

Answer 10

Leave the potato cylinders in the boiling tubes for a chosen amount of time.

Question 11

Step 10

Answer 11

Remove the potato cylinders from the boiling tubes and carefully blot them dry with the paper
towels.

Question 12

Step 11

Answer 12

Measure the new mass and length of each potato cylinder again. Record your measurements
for each concentration in your table.