Which of the following is typically associated with a reduction in photosynthesizing plants in a water supply?
An increase in dissolved oxygen
A decrease in dissolved oxygen
An increase in phosphates
A decrease in phosphates
is it d
no it's b
To determine which option is typically associated with a reduction in photosynthesizing plants in a water supply, we can consider the factors that affect photosynthesis in plants.
Photosynthesis is the process by which plants convert light energy into chemical energy to produce glucose (food). The key requirements for photosynthesis include light energy, carbon dioxide (CO2), water (H2O), and nutrients like phosphates.
In a water supply, an increase in dissolved oxygen (option A) is generally beneficial for aquatic life, including photosynthesizing plants. Oxygen is necessary for respiration, which releases energy from glucose during the breakdown process. However, it does not directly affect the photosynthetic process itself.
On the other hand, the presence of excessive phosphates (option C) can have a negative impact on photosynthesizing plants. Phosphates are essential nutrients for plant growth and development. However, when there is an excessive amount of phosphates in the water supply, it can lead to eutrophication.
Eutrophication occurs when there is an overabundance of nutrients like phosphates, stimulating excessive algal growth. The excess algae can block sunlight from reaching the photosynthesizing plants beneath the water surface, reducing their ability to carry out photosynthesis. As a result, the photosynthetic activity of the plants decreases.
Therefore, the answer to the question is option C: An increase in phosphates.