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Water Supply Engineering MCQ: Water Supply System

Which statement about sunlight in a water supply system is correct?

A. Helps growth of bacteria
B. Impedes growth of algae
C. Increases dissolved oxygen content

Answer :

Final answer:

Sunlight is essential for photosynthesis, which increases dissolved oxygen levels in aquatic systems. It supports the growth of algae and some bacteria but does hinder harmful bacterial growth. Therefore, sunlight contributes positively to aquatic oxygen levels through its role in photosynthesis.


Explanation:

Understanding the Role of Sunlight in Aquatic Systems

Sunlight plays a crucial role in aquatic ecosystems, especially in the context of photosynthesis. In relation to the options given in the Multiple Choice Question:

  • Option (A): Sunlight helps growth of bacteria. While sunlight can promote the growth of certain bacteria that photosynthesize, it can also hinder the growth of undesirable bacteria through the production of reactive oxygen species.
  • Option (B): Sunlight impedes growth of algae. This statement is misleading; sunlight is actually essential for algae growth, as they rely on photosynthesis to thrive.
  • Option (C): Sunlight increases dissolved oxygen content. This is true, as photosynthesis by plants and algae releases oxygen into the water, which increases the dissolved oxygen concentration. Therefore, the correct answer is that sunlight increases the oxygen content in water.

In summary, sunlight is a vital energy source for photosynthesis in aquatic environments and can significantly affect the dynamics of oxygen levels and microbial communities.


Learn more about Aquatic Ecology here:

https://brainly.com/question/38612373