Question

How does turbidity affect aquatic ecosystems?

1. It increases the penetration of sunlight, enhancing photosynthesis.
2. It reduces the extent of light penetration, thereby limiting photosynthetic activity.
3. It has no significant impact on light penetration or photosynthesis.
4. It is caused by dissolved gases and does not involve suspended particles.

• A. 3 only
• B. 2 only
• C. 1, 2
• D. None of these

Answer 1

Answer:

B. 2 only

• Transparency affects the extent of light penetration.

• It is indirectly related to turbidity.

• Suspended particulate matters such as clay, silt and phytoplankton make the water turbid.

• Consequently limiting the extent of light penetration and this photosynthetic activity in a significant way.