Which of the following induces nitrogen fixation in soil?
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The antibiotic penicillin is obtained from which of the following ?
What is commonly known as 'white plague'?
Which one of the following is a water soluble vitamin?
Hepatitis affects which organ of the human body?
The smallest blood vessels which are one-cell thick, are called ______.
The saliva in human beings contains which enzyme?
Which among the following do NOT have a perfect pair of sex chromosomes?
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