Water hyacinth is termed as 'terror of Bengal'. It causes death of fish because it ____________

Covers water surface and inhibits sunlight to pass through

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Drains oxygen from water that causes oxygen deficiency

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Absorbs nutrients from water that causes malnutrition

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Releases

C O_{2}

in huge amount which is lethal to fish

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Solution

The correct option is A Drains oxygen from water that causes oxygen deficiency
Water hyacinth is the aquatic weed and has ability to use dissolved oxygen from water bodies and makes water oxygen deficient. As fish breath dissolved oxygen, its deficiency causes their death. Fish is the staple food of Bengal and the death of fishes affects the food supply and economy of the Bengal. Thus, it is called as terror of Bengal.
So, the correct answer is 'Drains oxygen from water that causes oxygen deficiency'.

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Similar questions

Q. Read the following statements about 'Terror of Bengal' and select the correct ones.
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(ii) Eicchornia was introduced in India due to its beautiful flowers and the shape of leaves.
(iii) Eichhornia drains oxygen from the water which leads to the death of fishes.

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