Question

lashay and javier are completing a lab on transpiration during photosynthesis. they set up two identical tubes with the same amounts of water and oil (prevents evaporation). tube y included a seedling plant and tube x did not. use the diagram below to answer the question. what predictions can be made concerning the water level in the tubes after three days?
i. water level remains the same in tube x
ii. water level remains the same in tube y
iii. water level falls in tube x
iv. water level falls in tube y
v. water level rises in tube y
a. i and iv only
b. iii and v only
c. i and ii only

Explanation:

• Tube X: No plant, so no transpiration occurs. Since oil prevents evaporation, the water level in tube X remains the same.
• Tube Y: Has a plant. Transpiration (water loss through stomata of the plant) will cause the water level in tube Y to fall.

Answer:

A. I and IV only