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Water Pollutants

Q. Which of t...

Question

Q. Which of the following statements is/are correct about eutrophication?

Select the correct code from the options given below:

A

1 only

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B

2 only

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C

Both 1 and 2

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D

Neither 1 nor 2

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Solution

The correct option is A 1 only

Statement 1 is correct: Eutrophication is the process in which a water body becomes overly enriched with nutrients, leading to the plentiful growth of simple plant life. The excessive growth (or bloom) of algae and plankton in a water body are indicators of this process.

Statement 2 is incorrect: Eutrophication is considered to be a serious environmental concern since it often results in the deterioration of water quality and the depletion of dissolved oxygen in water bodies. Eutrophic waters can eventually become “dead zones” that are incapable of supporting life.

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Similar questions

Q. Described below are the three steps in the process of how eutrophication leads to total destruction of aquatic life.

i) Algae grow rapidly and eventually die off.
ii) Decrease in dissolved oxygen in water body.
iii) Increase in nutrient concentrations .

Choose the option which has the correct sequence of these steps.

Q. 20. Which of the following statements are true with respect to eutrophication?
i) Eutrophication is the nutrient enrichment of a water body
ii) Reducing water pollution can aid in controlling eutrophication.
iii) Aquaculture may further increase eutrophication of water bodies
Options:

Q. Described below are the three steps in the process of how eutrophication leads to total destruction of aquatic life. Choose the option which has the correct sequence of these steps.

i) Algae dies, producing a large quantity of organic matter.
ii) Bacteria begin degrading organic matter, leading to a decrease in dissolved oxygen.
iii) Increase in nutrient concentrations causes a sudden growth spurt in algae.

Q. Which of the following statement(s) is/(are) incorrect reason(s) for eutrophication?

(1) Excess usage of fertilisers
(2) Excess usage of detergents
(3) Dense plant population in water bodies
(4) Lack of nutrients in water bodies that prevent plant growth

Choose the most appropriate answer from the options given below.

Q. Described below are the three steps in the process of how eutrophication leads to total destruction of aquatic life. Choose the option which has the correct sequence of these steps.
i) Algae die off, hence a large amount of organic matter is released.
ii) Bacteria begin to degrade organic matter, leading to a decrease in dissolved oxygen.
iii) Increase in nutrient concentrations causes a sudden growth spurt in algae.

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