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Solution


Q.

Which one of the following is a characteristic feature of cropland ecosystem                [2016]
1 Absence of weeds  
2 Ecological succession  
3 Absence of soil organisms  
4 Least genetic diversity  

Ans.

(4)

Cropland ecosystem is an artificial or man-made terrestrial ecosystem which is created and maintained by human beings for their maximum benefits. Therefore, they will have least genetic diversity.