Biology - Photosynthesis (pond weed)

Question 1

step 1

Answer 1

put a pond weed into a beaker/test tube and leave it for a set amount of time

Question 2

step 2

Answer 2

measure with a ruler the distance between the lamp and the pond weed, starting at 5cm

Question 3

step 3

Answer 3

count the number of bubbles given off in 1 minute

Question 4

step 4

Answer 4

repeat using increased distances at 10,15,20 and 25cm

Question 5

step 5

Answer 5

record your results in a table and graph