I'm not sure, but my best answer would be "C". Hope this helps, sorry if it doesn't.
The Cori cycle (also known as the lactic acid cycle), named after its discoverers, Carl Ferdinand Cori and Gerty Cori,[1] refers to the metabolic pathway in which lactate produced by anaerobic glycolysis in the muscles moves to the liver and is converted to glucose, which then returns to the muscles and is cyclically metabolized back to lactate.[2]
The experimental procedure to test whether plants that are exposed to music grow faster than those that are not should follow the following steps. First, the plants must all be placed in a place where all must be exposed in the same type of environment in terms of sunlight, temperature, water and soil. Second, one of the plant must be exposed to two to three hours of classical music per day. Then you should expose one plant to five to six hours of music per day too. The remaining two plants will be treated as your control plants wherein these will be not exposed to music at all. Before you begin the experiment, you should take pictures of each plant. Next, you should take pictures after two, four and eight weeks. After the steps, observe any visible and palpable differences between the plants which were exposed to music and those that have note. Lastly, also observe the differences between the plants which were exposed to less and those exposed to more music.
Hey there!
The purpose of guard cells is to control the opening and closing of the Stomata, keeping it the correct width, or size.
Therefore, your correct answer would be Option 3, control the size of the Stomata.
Hope this helps!
