World's most problematic aquatic weed is...

World's most problematic aquatic weed is

Trapa

Azolla

Wolffia

Eichhornia

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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 ?

GRB PUBLICATION-ENVIRONMENTAL ISSUES-Assertion & Reason Type Questions

World's most problematic aquatic weed is
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(A) : Brood parasitism is a social parasitism among birds. (R) : Koe...
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(A) : Decomposition is largely an oxygen requiring process. (R) : D...
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(A) : The concept of ecological pyramid was developed by Arthur Tansle...
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(A) : Nutreints are never lost from the ecosystems (R) : They are re...
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(A) : The success of mammals is largely due to their ability to mainta...
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(A) : Small animals have a larger surface area relative to their volum...
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(A) : Many desert plants keep their stomata closed during day time. ...
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(A) : Mycorrhizae represent an intimate mutualistic relation between a...
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