NTPC CBT-2 Biology Quiz - 44

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Question 1:

Biological Oxygen Demand (BOD) is a standard criterion for :

Question 2:

Which of the following has the largest population in the food chain?

Question 3:

What is recombinant DNA?

Question 4:

Which of the following is the only internal human organ which can regenerate?

Question 5:

Anaerobic respiration is found in which of the following?