UPSC Prelims Full Length Test - 97

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1.
Consider the following: 
  1. Bioaccumulation
  2. Bio-concentration
  3. Bio-magnification
Which among the above take place at the same trophic level of the Food Chain?
2.
Consider the following statements:
  1. Biological Nitrogen Fixation occurs in absence of Oxygen only
  2. Only Symbiotic Bacteria can fix atmospheric Nitrogen
Which among the above statements is / are correct?
3.
Which of the following is / are incorrect pairs regarding classification of biodiversity? 
  1. Alpha diversity - Between-community diversity
  2. Beta diversity - Within-Community diversity
  3. Gamma diversity - Overall Biodiversity
Select the correct option from the codes given below:
4.
The following bar chart shows the relative biomass of four different populations of a particular food pyramid.

Which among the above populations is most likely of producers?
5.
Consider the following statements:
  1. A niche is specific functional role of an organism
  2. No two species can occupy the same niche at the same time
Which of the above is / are correct statements?
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