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

The given question involves understanding the concept of eutrophication and its effects on water bodies. Let us analyze each statement:

1. Statement I: The nutrient deficient water bodies lead to eutrophication.
   • Eutrophication is a process where water bodies become enriched with nutrients (such as nitrates and phosphates), leading to excessive growth of algae and other aquatic plants. This statement is incorrect as eutrophication typically occurs in nutrient-rich, not nutrient-deficient, environments.
2. Statement II: Eutrophication leads to decrease in the level of oxygen in the water bodies.
   • When algae proliferate due to eutrophication, they eventually die and decompose. The decomposition process consumes significant amounts of dissolved oxygen in the water, leading to hypoxic conditions or 'dead zones'. This statement is correct.

Now, let's examine the options:

• Both statement I and statement II are false: This option is incorrect because Statement II is true.
• Statement I is correct but Statement II is false: This is incorrect because Statement I is false, and Statement II is true.
• Statement I is incorrect but Statement II is true: Correct option since Statement I is indeed incorrect and Statement II is true.
• Both statement I and statement II are true: This is incorrect because Statement I is false.

Therefore, the correct answer is: Statement I is incorrect but Statement II is true.