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A red chemical dye known as phenol red changes to yellow when CO2 is present. A small green plant seedling is placed in phenol red and then placed in the dark. Which of the following is most likely to occur? The solution is red to begin with, and it will turn yellow because respiration is occurring. Photosynthesis drastically increased the oxygen content of the atmosphere. all of these none of thses

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maacastrobr

Answer:

The solution is red to begin with, and it will turn yellow because respiration is occurring.

Explanation:

Photosynthesis takes place when green plants are put under light, during this process CO₂ is consumed and O₂ is produced.

Respiration takes place when such plants are in the dark, during this process CO₂ is produced and O₂ is consumed.

In this problem, the green plant seedling is placed in the dark, so CO₂ will be produced. That's why the phenol red will change to yellow.

ayfat23

It Should be noted that the red chemical dye known as phenol red changes to yellow when CO2 is present because

  • The solution is red to begin with, and it will turn yellow because respiration is occurring.

What is respiration?

Respiration can be regarded as movement of oxygen from into the cells and expelling of carbon dioxide.

As the the effect of respiration is felt, then the solution will turn to yellow because of presence of carbon dioxide

Learn more about respiration at:

https://brainly.com/question/3529377