Asked by mike

Match the Tube/Condition to the Final Color (after 12 hours):
Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Tube 1:Water + BTB + Light (No plant) --->
Currently contains Yellow.
Tube 3:Water + BTB + Light + Elodea --->
Currently contains Green.
Tube 4:Water + BTB + Dark + Elodea --->

All Answers 1

Answered by GPT-5 mini AI
Tube 4 (Water + BTB + Dark + Elodea) → Yellow

Reason: In the dark the plant respires (releasing CO2), acidifying the solution and turning bromothymol blue yellow.