World's most problematic aquatic weed is...

World's most problematic aquatic weed is

Azolla

Wolffia

Eichornia

Trapa

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Consider the following statements I.Algal blooms are formed by free floating algae II.Algal bloom causes fish mortality and deterioration of water quality III.Water hyacinth the world's most problematic aquatic weed is also called "Terror of Bengal" Which of the statements given above are correct about algal blooms?

Which aquatic plant is also called world's most problematic aquatic weed and Terror of Bengal.

Given below are four statements each with two blanks. Select the option which correctly fills up the blank in any two statements. (i) Bhopal gas disaster took place on ___ 1994 and this day is now observed as the ____ day in India to make the anniversary of the Bhopal gas disaster. (ii) ____ is a biodergradable pollutant while ___ is a non-biodegradable pollutant while ____ is a non-biodegradable pollutant. (iii) When pollutants are released from a single point it is called ____ pollution, but when it is over a large area, then it is called ____ pollution. (iv) _____ is the world's most problematic aquatic weed, introduced in India for its lovely flowers, also called as ____.

Which of the following is referred to as the world's most problematic aquatic weed?

Name the world’s most problematic aquatic weed. What in the nature of the water body in which the weeds grow abundantly ?

Read the following statements carefully and find the incorrect statements: A. More than 1 percent impurities make domestic sewage unfit for human use. B. Less BOD causes mortality of fish and other aquatic creatures. C. Presence of large amounts of nutrients in water also causes excessive growth of planktonic algae, called an algal bloom. D. Algai bloom causes deterioration of the water quality an decreases fish mortality. E. Some bloom-forming algae are extremely toxic to human beings and animals. F. Eichhornia crassipies is the world's most problematic aquatic weed.

(a) Write down the name of world most problematic aquatic weed palnt. (b) Write down the name of major green house gases

Which is the most problematic aquatic weed of the world ?

TRUEMAN BIOLOGY-NCERT Exemplar Questions +2 (ENVIRONMENTAL ISSUES )-MCQs

Non-biodegradable pollutants are created by :
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According to the Central Pollution Control Board, particles that are r...
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The material generally used for sound proffing of rooms like a recordi...
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Compressed Natural Gas (CNG) is
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World's most problematic aquatic weed is
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Which of the following causes biomagni- fication
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The expanded form of DDT is
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Which of the following materials takes the longest time for biodegrada...
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Choose the incorrect statement.
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Among the following which one causes more indoor chemical pollution ?
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The green scum seen in the freshwater bodies is
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The loudness of a sound that a person can withstand without discomfort...
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The major source of noise pollution, world wide is due to:
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Catalytic converters are fitted into automobiles to reduce emission of...
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Why is it necessary to remove sulphur from petroleum products ?
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Which one of the following impuritites is easiest to remove from waste...
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Which one of the following diseases is not due to contamination of wat...
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Nuisance growth of aquatic plants and bloom-forming algae in natural w...
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Algal blooms impart a distinct colour to water due to
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In the textbook you came acroos Three Mile Island and Chernobyl disast...
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