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Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?



A. Ocean, lakes, grasslands, mangroves
B. Mangroves, ocean, grasslands, lakes
C. Mangroves, grasslands, lakes, ocean
D. Ocean, mangroves, lakes, grasslands

This question is part of IAS Prelims 2014: GS Paper I: Environment and Ecology: Previous Year Questions
Asked by Jagran josh, Last updated: Feb 25, 2020

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2 Answers

J. Harty

Have keen interest in writing, traveller by heart.

J. Harty, Writer, M.A, Chula Vista

Answered Feb 28, 2019

The answer to this is a bit tricky because it would depend on your location if you are going to think about productivity. The most common answer for this question though is C. You need to consider the rate of the organic matter that you can get from the area. Mangroves are known to be highly productive especially when compared to the other areas.

Some may think that oceans should rate much higher but according to some reports, the ocean is very vast and not all of its areas can be used by humans because of varying reasons. When it is compared to the other areas, the oceans may only be as productive as the desert.

 

John Smith

John Smith

Answered Dec 20, 2016

Mangroves, grasslands, lakes, ocean
 

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