Question

Given below are two statements: 
Statement I: The nutrient deficient water bodies lead to eutrophication.
Statement II: Eutrophication leads to decrease in the level of oxygen in the water bodies.
In the ligth of the above statements , choose the correct answer from the options given below: 

• A. Both statement I and statement II are false
• B. Statement I is correct but Statement II is false
• C. Statement I is incoorect but Statement II is true
• D. Both statement I and statement II are true

Answer 1

The Correct Option is D

Statement I: The nutrient deficient water bodies lead to eutrophication. This statement is true. Eutrophication is a process where excess nutrients (such as nitrogen and phosphorus) enter water bodies, promoting the rapid growth of algae and other aquatic plants. If a water body is nutrient-deficient, it is less likely to experience eutrophication.

Statement II: Eutrophication leads to a decrease in the level of oxygen in the water bodies. This statement is also true. During eutrophication, the excessive growth of algae leads to algal blooms. As these algae die and decompose, bacteria consume oxygen in the process, leading to a decrease in dissolved oxygen levels in the water. This reduction in oxygen can harm aquatic organisms, potentially leading to "dead zones" where marine life cannot survive.

Since both statements are true and correctly explain the relationship between nutrient deficiency, eutrophication, and the decrease in oxygen levels.

Therefore, The correct option is (D): Both statement I and statement II are true