NAME:
1. Color in the grey tubes according to the colors they should be after 24 hours. Remember that Bromothymol
Blue turns yellow in the presence of carbon dioxide.
2. Explain why each tube would or would not change color. Refer to specific PROCESSES in your answer!
3. CIRCLE the tubes in which photosynthesis occurred. Put a BOX around the tubes in which respiration occurred.
LIGHT
A
DARK
C
B
D
G
F
E
H
AFTER 24 HOURS
A
B
C
D
TUBE
EXPLAINATION
E
F
G
H