TREE PHYSIOLOGY
RESPIRATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Bromothymol blue turns blue in the presence of Oxygen. When would it turn the most blue?
|
|
When a plant is in the sunlight
|
|
|
When a plant is in the dark
|
|
|
When cellular respiration is happening
|
|
|
When oxygen is removed from the air
|
Explanation:
Detailed explanation-1: -Bromothymol blue is a pH indicator. During photosynthesis, the aquatic plant used carbon dioxide, raising the pH of the solution. Due to change in pH, the colour of bromothymol changes from yellow to blue.
Detailed explanation-2: -Bromthymol Blue is a dye used as an indicator in determining pH. Bromthymol blue is a weak acid. It can be in acid or base form, depending on the pH of the solution. This reagent is yellow in acidic solutions, blue in basic solutions and green in neutral solution.
There is 1 question to complete.